Accoya Performance Testing Summary

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Accoya Performance Testing Summary
accoya                 ®

Performance Testing Summary

                              1
Accoya Performance Testing Summary
CO N T E N TS                  1   INTRODUCTION

1   Introduction           2
                                   A new way of thinking
                                   about wood
2   Durability             3

3   Termite resistance     8

4   Finish                12
                                   Accoya represents a revolution in modified wood, bringing
5   Certification         16
                                   new design possibilities for architects, manufacturers
6   Thermal and surface   20       and property owners.
7   Contact               24
                                   The benefits of Accoya mean           Accsys run an Approved
                                   that timber projects can now be       Manufacturer Training Programme
                                   designed with absolute confidence.    and we would encourage all
                                   Accoya is a highly proven product     manufacturers planning to use
                                   with testing from many different      Accoya to contact their distributor
                                   perspectives, on a worldwide basis.   or Accsys directly to arrange for this
                                   Many tests have been conducted        training programme. The Approved
                                   in real world conditions over         Manufacturer status also brings a
                                   many years.                           number of benefits which support
                                                                         market activity.
                                   This summary shows some
                                   of these results.

                                                                                                          Accoya® Performance Testing Summary | V4.0 | July 2020   2
Accoya Performance Testing Summary
CO N T E N TS                  2   durability                                                                                                                   THIS TEST WAS
                                                                                                                                                                CON DU CTED BY:

1

2
    Introduction

    Durability
                           2

                           3
                                   10 year durability
    10 year durability     3       comparison
    5 year decay test      4
    Durability and                 Scion is a Crown research institute                    Decay rates of fungus cellar stakelets
                                                                                                                                                      Decay / insect damage rating system*     Rating
    strength test          5
                                   that specialises in research, science                  [Index of condition]                                        No decay or insect damage                 10
    15 & 20 year canal
    lining test            6       and technology development for the                     Time [Years]                                                Discolouration or trace of decay,
                                                                                                                                                                                                T
                                                                                           0       2     4      6    8     10                         not positively identified as decay
    20 year window                 forestry, wood product, wood-derived              10
                                                                                                                                                      Minor decay, 0.3% of the cross section
    L-joint test           7                                                                                                                                                                    9
                                   materials, and other biomaterial sectors.         8                                                                Lightly established decay,
3   Termite resistance     8                                                                                                                                                                    8
                                   Scion tested the durability of Accoya
                                                                                                                                       Accoya®
                                                                                                                                                      3-10% of the cross section
                                                                                                                                       Merbau
                                                                                     6
4   Finish                12       wood against other naturally durable                                                                CCA H4
                                                                                                                                                      Well established decay,
                                                                                                                                                      10-30% of the cross section
                                                                                                                                                                                                7

                                   and preservative treated timbers.
                                                                                                                                       CCA H3.2
                                                                                     4
5   Certification         16                                                                                                           Radiata pine   Extensive and deep decay,
                                                                                                                                                                                                6
                                                                                                                                                      30-50% of the cross section
                                                                                     2
6   Thermal and surface   20                                                                                                                          Deep and severe decay, more than
                                   The rigorous tests run exposed timbers                                                                             50% of the cross section
                                                                                                                                                                                                4
7   Contact               24                                                         0
                                   in accelerated decay chambers and in exterior                                                                      Failed                                    0
                                   ground contact tests at the Whakarewarewa              Decay rates of stakes [Index of condition]
                                   site. The tests have run for 10 years and              Time [Years]

                                   show Accoya outperforming Teak, Merbau,           10
                                                                                           0       2     4      6     8    10

                                   Cypress, Cedar and H3.2 (above ground,
                                   uncoated horizontal) and H4 (in ground contact)   8
                                                                                                                                       Accoya®
                                   preservative (CCA) treated timbers, proving                                                         CCA H4
                                   that Accoya has the highest possible
                                                                                     6
                                                                                                                                       CCA H3.2

                                   durability classification.                        4
                                                                                                                                       Teak

                                                                                                                                       Cedar

                                                                                                                                       Macrocarpa
                                                                                     2

                                                                                     0

                                   *Based on ASTM D 1758

                                                                                                             Accoya® Performance Testing Summary | V4.0 | July 2020                        3
Accoya Performance Testing Summary
CO N T E N TS                  2   durability                                                                                                      THIS TEST WAS
                                                                                                                                                   CON DU CTED BY:

1

2
    Introduction

    Durability
                           2

                           3
                                   5-year decay test
    10 year durability     3
                                   Timber Products Inspection (USA), the largest accredited
    5 year decay test      4
                                   agency under ALSC for wood related auditing programs, have                     5 year decay rating (E18 ground proximity)
    Durability and
    strength test          5       performed decay tests of Accoya wood at their Gainesville (Fl)                 Time [Years]

                                   exposure site.
                                                                                                                   0             1   2     3        4          5
    15 & 20 year canal                                                                                       10

    lining test            6
                                                                                                             8
    20 year window
    L-joint test           7       Testing was done over a 5 year                                                                                                        Accoya®

                                                                                                                                                                         FEQ Teak
                                   field trial period according to AWPA                                      6
                                                                                                                                                                         African
3   Termite resistance     8       E7-09 in ground stake test and                                                                                                        Mahogany
                                                                                                             4

4   Finish                12       AWPA E18-06 ground proximity test.                                                                                                    Western
                                                                                                                                                                         red cedar

                                   The results show Accoya wood to                                           2                                                           Radiata pine
5   Certification         16       outperform high quality (FEQ)
6   Thermal and surface   20       teak, western red cedar and                                               0

                                   African mahogany.
7   Contact               24
                                                                                                                  5 year decay rating (E7 ground contact)
                                                                                                                  Time [Years]
                                                                                                                   0             1   2     3        4          5
                                                                                                             10

                                                                                                             8
                                                                                                                                                                         Accoya®

                                                                                                                                                                         FEQ Teak
                                                                                                             6
                                                                                                                                                                         African
                                                                                                                                                                         Mahogany
                                                                                                             4
                                                                                                                                                                         Western
                                                                                                                                                                         red cedar

                                                                                                             2                                                           Radiata pine

                                                                                                             0

                                   In Ground and Ground proximity testing, Gainesville, Florida
                                                                                                  Accoya® Performance Testing Summary | V4.0 | July 2020             4
Accoya Performance Testing Summary
CO N T E N TS                  2   durability                                                                                                                                        THIS TEST WAS
                                                                                                                                                                                     CON DU CTED BY:

1

2
    Introduction

    Durability
                           2

                           3
                                   Durability and strength test                                                       TPI conclusions            Weight loss in decay test

                                                                                                                      125                        25
    10 year durability     3
                                   Timber Products Inspection (USA) undertook a number of
    5 year decay test      4                                                                                          100                        20

                                   thorough and independent tests to analyse Accoya wood’s
    Durability and
                                   durability, stability and strength performance characteristics
                                                                                                                      75                         15

    strength test          5
    15 & 20 year canal             in accordance with the USA’s Window & Door Manufacturers                           50                         10

    lining test            6       Association (WDMA) requirements.
                                                                                                                                                                                                        Untreated
                                                                                                                                                                                                        Radiata Pine
                                                                                                                      25                         5

    20 year window
    L-joint test           7

                                                                                                                [%]

                                                                                                                                           [%]
                                                                                                                      0                          0                                                      Accoya®

                                                                                                                            MOR                        MOE
                                                                                                                                                         Trametes              WML
                                                                                                                                                                              Gloeophyllum
3   Termite resistance     8       Accoya wood outperformed                The MOR and WML values                           (Modulus of                (Modulus   of fungus
                                                                                                                                                         versiculour           (Work tofungus
                                                                                                                                                                              trabeum
                                                                                                                            Rupture – ultimate         Elasticity –            maximum load)
                                   Radiata Pine in accelerated decay       of Accoya are slightly higher and                bending strength)          Young’s Modulus)
4   Finish                12
                                   chambers highlighting its durability.   the average MOE value of Accoya
5   Certification         16       The results showed that Accoya          is slightly lower than that of                                        TPI conclusions

                                   wood had a very low weight loss         untreated Radiata Pine unlike some
6   Thermal and surface   20                                                                                                                     125
                                   percentage for both brown rot           wood modification techniques that
7   Contact               24       (Gloeophyllum trabeum) and white        cause significant reductions                                          100

                                   rot (Trametes versicolor) fungi         in strength.
                                   against such types of decay.
                                                                                                                                                 75

                                                                           The tests proved that Accoya meets                                    50

                                   TP also evaluated mechanical            WDMA’s stringent rot resistance                                                                                                             Untreated
                                                                                                                                                                                                                       Radiata Pine
                                   properties. Overall, the properties     requirements, which means it’s an
                                                                                                                                                 25

                                   of Accoya are essentially the same      ideal choice for windows and doors.

                                                                                                                                           [%]
                                                                                                                                                 0                                                                     Accoya®

                                   as those of the untreated (Radiata                                                                                   MOR                     MOE                WML
                                                                                                                                                        (Modulus of             (Modulus of        (Work to
                                   Pine) control.                                                                                                       Rupture – ultimate      Elasticity –       maximum load)
                                                                                                                                                        bending strength)       Young’s Modulus)

                                                                                                          Accoya® Performance Testing Summary | V4.0 | July 2020                                               5
Accoya Performance Testing Summary
CO N T E N TS                  2   durability                                                                                                          THIS TEST WAS
                                                                                                                                                       CON DU CTED BY:

1

2
    Introduction

    Durability
                           2

                           3
                                   15 & 20 year canal lining test
    10 year durability     3
                                   Accoya wood’s high performance was proven with two Dutch project
    5 year decay test      4
                                   tests in the Flevopolder near Almere, one installed in 1995 and one
    Durability and
    strength test          5       in 2000. The SHR institute in the Netherlands originally set up the tests
    15 & 20 year canal             and made detailed inspections at respective 15 and 20 year exposure
    lining test            6       periods in 2015.
    20 year window
    L-joint test           7

3   Termite resistance     8
                                   These tests include acetylated       highlighting its class 1 durability
                                   wood alongside control wood,         status and reinforcing the 25-year
4   Finish                12       preservative treated wood and        ground and fresh water contact
5   Certification         16       hardwood species used as a canal     warranty. From these test results,
                                   lining (fresh water exposure).       SHR concludes that the durability
6   Thermal and surface   20       These canal bank conditions are      of acetylated wood in fresh water
7   Contact               24       particularly punishing, especially   applications competes with highly
                                   at the waterline, since the wood     durable hardwood species and
                                   is exposed to a combination of       professionally preserved wood.
                                   water, microbe rich soil and air
                                   (oxygen). Both trials show hardly
                                   any sign of rot, decay or fungal
                                   damage in acetylated wood –

                                                                                                                           Accoya wood                    Non-Accoya wood

                                                                                                        Accoya® Performance Testing Summary | V4.0 | July 2020           6
Accoya Performance Testing Summary
CO N T E N TS                  2   durability                                                                                                             THIS TEST WAS
                                                                                                                                                          CON DU CTED BY:

1

2
    Introduction

    Durability
                           2

                           3
                                   20 year window
    10 year durability     3       L-joint test
    5 year decay test      4
    Durability and                 BRE, with its main campus outside London UK is a
    strength test          5
                                   world leading, multi-disciplinary, building science centre
    15 & 20 year canal
    lining test            6       with a mission to improve buildings and infrastructure,
    20 year window                 through research and knowledge generation.
    L-joint test           7

3   Termite resistance     8       In durability field testing to         In February 1998, L-joints were
4   Finish                12       European Norm (EN) 330:1993            installed at the BRE Garston field
                                   – which parallels American Wood-       exposure site (Watford, UK) facing
5   Certification         16
                                   Preserver’s Association (AWPA)         the prevailing south westerly
6   Thermal and surface   20       E9 – simple mortice and tenon joints   weather on an elevated test rig.
                                   (L-joints) are assembled, coated       The acetylated L-joints used were
7   Contact               24
                                   and placed outside, with the coating   acetylated at the University of
                                   over the joint deliberately broken     Wales, Bangor, to a lower acetyl
                                   to allow water ingress that might      content than Accoya wood, and
                                   be encountered if a joint is open,     still performed significantly better
                                   damaged or poorly maintained.          than the treated wood, which were
                                   This test represents a worst           degraded completely in 2014.
                                   case scenario for joinery products                                                     The acetylated L-joints after 20 years of exposure
                                   and requires the coated wood           BRE concludes that Accoya wood
                                   to be exposed to normal                would exceed the biological reference
                                   environmental factors.                 value (brv) and would be deemed to
                                                                          provide sufficient protection for long
                                                                          life window joinery.

                                                                                                           Accoya® Performance Testing Summary | V4.0 | July 2020           7
Accoya Performance Testing Summary
CO N T E N TS                        3   termite resistance                                                                                             THIS TEST WAS
                                                                                                                                                        CON DU CTED BY:

1

2
    Introduction

    Durability
                                 2

                                 3
                                         Formosan termite durability test
3   Termite resistance           8
                                         LSU AgCenter’s Wood Durability Lab are a specialist in termite testing of
    Formosan termite test        8       wood products. Coptotermes formosanus, known as Formosan termites,
    5 year termite field test    9       are considered one of the world’s most aggressive termite species.
    Termite test, Australia    10
    Termite test, Thailand      11
                                         Louisiana State University (LSU) conducted
4   Finish                      12                                                                 Weight loss in LSU Formosan
                                         a Formosan termite ‘choice’ test according to
5   Certification               16       AWPA E1-09 standard, using leached and un-
                                                                                                   30
                                         leached both treated (acetylated) and untreated
6   Thermal and surface         20
                                         samples together with choice samples.                     20
7   Contact                     24                                                                                                                           Untreated
                                                                                                                                                             wood
                                         After 28 days of exposure, the samples were               10

                                         assessed on weight loss. The Accoya wood

                                                                                             [%]
                                                                                                   0                                                         Accoya®
                                         treatment, regardless of the wood specie,
                                         resulted in a consistent significant reduction in

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                                         weight loss. Accoya wood was even as much as

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                                         22 times better than the untreated radiata (when

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                                         measured by sample weight loss).

                                                                                                         Accoya® Performance Testing Summary | V4.0 | July 2020           8
Accoya Performance Testing Summary
CO N T E N TS                        3   termite resistance                                                                                            THIS TEST WAS
                                                                                                                                                       CON DU CTED BY:

1

2
    Introduction

    Durability
                                 2

                                 3
                                         5 year termite field trial
3   Termite resistance           8       data from Gainesville, Florida
    Formosan termite test        8
    5 year termite field test    9       Additional testing by TPI at their
    Termite test, Australia    10       exposure sites in Gainesville Florida        5 year Termite data (Gainesville FL, E18. Ground Proximity)
    Termite test, Thailand      11       and Cost Rica demonstrate that               Time [Years]

                                         Accoya performance exceeds
                                                                                       0             1       2       3       4       5

4   Finish                      12                                               10

5   Certification               16
                                         that of high quality (FEQ) teak.        8
                                                                                                                                                Accoya®

6   Thermal and surface         20                                               6
                                                                                                                                                Western Red Cedar

                                         The results were developed over                                                                        FEQ Teak

7   Contact                     24       a 5 year field trial period in          4
                                                                                                                                                Radiata Pine

                                         accordance with AWPA E7-09
                                                                                                                                                African Mahogany

                                                                                 2
                                         in ground stake test and AWPA
                                         E18-06 ground proximity test.           0

                                         Performance level was used to
                                         support the qualification of Accoya
                                                                                      5 year Termite data (Gainesville FL, E7 Ground Contact)
                                         for use in termite zones and ‘in
                                         ground’ application in the ICC               Time [Years]

                                         ESR-2825 which confirms Accoya
                                                                                       0             1       2       3       4       5
                                                                                 10

                                         decking compliance with US
                                         Building Code.                          8
                                                                                                                                                Accoya®

                                                                                                                                                Western Red Cedar
                                                                                 6
                                                                                                                                                FEQ Teak

                                                                                                                                                Radiata Pine
                                                                                 4
                                                                                                                                                African Mahogany

                                                                                 2

                                                                                 0

                                                                                                     Accoya® Performance Testing Summary | V4.0 | July 2020              9
Accoya Performance Testing Summary
CO N T E N TS                        3   termite resistance                                                                                                           THIS TEST WAS
                                                                                                                                                                      CON DU CTED BY:

1

2
    Introduction

    Durability
                                 2

                                 3
                                         Termite durability test, Australia – AFRC
3   Termite resistance           8
                                         Coptotermes acinaciformis is a widely encountered species of Australian termite
    Formosan termite test        8       distributed throughout mainland Australia and is responsible for greater economic
    5 year termite field test    9       loss than all the other Australian species of termites combined. Hazard Class 3 above
    Termite test, Australia    10
                                         ground testing was set up in Northern Territory, Australia according to the AWPA
    Termite test, Thailand      11
                                         protocol by the Australian Forest Research Company.
4   Finish                      12
                                         At the conclusion of the field trial   All of the Accoya materials
5   Certification               16
                                         all test specimens had evidence        performed similarly to Merbau and
6   Thermal and surface         20       of contact by C. acinaciformis,        Spotted Gum Heartwood, having                  Mass loss in Hazard Class H3 field trial [%]
                                                                                                                               after exposure to Coptotermes acinaciformis
                                         and all untreated Eucalyptus nitens    mean mass losses ranging from
7   Contact                     24
                                         bait-wood, used as a susceptible       0.2% to 0.7%. Any attack by C.                      90

                                         and attractive food source for         acinaciformis largely consisted                     80

                                         maintaining the presence of            of minor localised grazing on the                   70

                                         termites in exposure containers,       surfaces of test specimens. The                     60

                                         had been destroyed. The majority       Accoya materials investigated in                    50

                                         of the susceptible sapwood             this study would be expected to                     40

                                         test specimens were destroyed          perform well against termites in                    30

                                                                                                                                    20
                                         or severely attacked by C.             Australia when used in locations
                                                                                                                                    10
                                         acinaciformis. The mean mass           south of the Tropic of Capricorn.

                                                                                                                             [kN]
                                                                                                                                    0
                                         loss of the untreated Radiata
                                         Pine Sapwood was 82.6%.

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                                                                                Additional testing run at AFRC,

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                                                                                in accordance with AWPA protocol,

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                                         Merbau and Spotted Gum                 include performance evaluation
                                         Heartwood were highly resistant        in fungal decay testing alongside
                                         to attack by C. acinaciformis.         Spotted Gum, a durability class 1
                                         In contrast, the mean mass loss for    rated timber and density of 1,050kg/
                                         Western Red Cedar was 28.6%.           m3. Accoya performance matched
                                                                                Spotted Gum.

                                                                                                               Accoya® Performance Testing Summary | V4.0 | July 2020                        10
CO N T E N TS                        3   termite resistance                                                                                                                      THIS TEST WAS
                                                                                                                                                                                 CON DU CTED BY:

1

2
    Introduction

    Durability
                                 2

                                 3
                                         Termite attack and
3   Termite resistance           8       decay trial – Thailand
    Formosan termite test        8
    5 year termite field test    9       A test conducted by the Environmental Research Centre;
                                                                                                                                             Decay rating [index of condition]
    Termite test, Australia    10       Naresuan University involved setting up ground stake
    Termite test, Thailand      11       tests at sites around Thailand.                                                                     Time [Years]
                                                                                                                                              0        1    2       3      4       5   6
                                                                                                                                        10
4   Finish                      12
                                         Test stakes were Accoya, Teak and Makha. After 6 years
5   Certification               16       Accoya demonstrated significantly higher performance than                                       8
                                                                                                                                                                                                    Accoya®

                                         Makha hardwood and high-quality BurmeseTeak.                                                                                                               Teak
6   Thermal and surface         20                                                                                                       6
                                                                                                                                                                                                    Makha

7   Contact                     24       This superior performance relative to Burmese Teak                                              4

                                         corroborates termite and decay evaluation tests reported in
                                                                                                                                         2
                                         earlier pages of this brochure in Florida and New Zealand.
                                                                                                                                         0

                                                                                                                                             Termite rating [index of condition]
                                                                                                                                             Time [Years]
                                                                                                                                              0        1    2       3      4       5   6
                                                                                                                                        10

                                                                                                                                         8
                                                                                                                                                                                                    Accoya®

                                                                                                                                                                                                    Teak
                                                                                                                                         6
                                                                                                                                                                                                    Makha

                                                                                                                                         4

                                                                                                                                         2
                                         Makha                       Accoya wood                    Teak
                                         Failure conditions in termite rating of Makha wood for Ubonratchathani province,                0

                                         72 Months Inspection.

                                                                                                                            Accoya® Performance Testing Summary | V4.0 | July 2020                 11
CO N T E N TS                   4   finish                                                                                                                THIS TEST WAS
                                                                                                                                                          CON DU CTED BY:

1

2
    Introduction

    Durability
                            2

                            3
                                    10 year coating test
3   Termite resistance      8       at Teknos
4   Finish                 12

    10 year coating test   12       A weathering test was set up by Teknos (UK) Ltd, a leading
    12 year service life   13       coatings company supplying products to the factory applied
	7 year face laminated             window, door and cladding industry across Europe. The                            Accoya
  window test              14       test began in March 2009 to obtain natural weathering
     .5 year external
    9                               performance data, end grain sealing, face fix detail and profile
    coatings test          15
                                    design impact of three different timber substrates (coated)                      Siberian Larch
5   Certification          16
                                    and on different cladding profiles. Apart from Accoya –
6   Thermal and surface    20
                                    Western Red Cedar (WRC) and Siberian Larch were
7   Contact                24       included in the test rig.
                                                                                                                     Western Red Cedar

                                    After 10 years of natural exposure,   made from Western Red Cedar
                                    without any form of maintenance,      and Siberian Larch have now lost
                                    the Accoya boards have confirmed      all of their protective functionality      Accoya
                                    the superior long-term performance    whereas on the Accoya boards
                                    in virtually all respects compared    the coating had yet to show any
                                    to the unmodified Western Red         significant deterioration effects
                                    Cedar and Siberian Larch timber       after ten years of unbroken
                                    substrates, even more so in the       weathering exposure and has
                                    most unfavourable conditions.         retained its full protective function.
                                    Accoya wood showed excellent          The test shows that the expected
                                    stability, which has served to        lifetime of the coating can be
                                    significantly reduce splitting and    extended by as much as three times
                                    fissuring at board ends, prevented    compared to when unmodified
                                    distortion and fissuring around       softwoods are used as a substrate.
                                    fixings. The coating on boards

                                                                                                           Accoya® Performance Testing Summary | V4.0 | July 2020           12
CO N T E N TS                   4   finish                                                                                                THIS TEST WAS
                                                                                                                                          CON DU CTED BY:

1

2
    Introduction

    Durability
                            2

                            3
                                    12 year service life
3   Termite resistance      8
                                    To validate extended maintenance periods, renowned coating
4   Finish                 12       company Remmers set up window and door test rigs on their
    10 year coating test   12       German premises in 2006.
    12 year service life   13
	7 year face laminated             Based on these test results combined
  window test              14
                                    with case studies around the world,
     .5 year external
    9                               Remmers have issued a maintenance
    coatings test          15
                                    schedule for their fully factory-finished
5   Certification          16       coatings on Accoya joinery up to 10
                                    years for translucent and up to 12
6   Thermal and surface    20
                                    years for opaque finishes.
7   Contact                24

                                    The test rigs after 10 years of exposure             No coating degradation visible

                                                                                           Accoya® Performance Testing Summary | V4.0 | July 2020           13
CO N T E N TS                   4   finish                                                                                                               THIS TEST WAS
                                                                                                                                                         CON DU CTED BY:

1

2
    Introduction

    Durability
                            2

                            3
                                    8 year face laminated
3   Termite resistance      8       Accoya window test
4   Finish                 12

    10 year coating test   12       Two window frames made from face laminated Accoya/
    12 year service life   13       Pine/Pine wood were installed in the BRE Window Joinery                           After 8 years of exposure, these windows
	7 year face laminated             Test building in June 2012, facing South to maximise solar                        on exposure at BRE were inspected on;
  window test              14       irradiance. One window frame was coated with a translucent
     .5 year external
    9                                                                                                                 ›    General condition: Appearance excellent
    coatings test          15
                                    finish, and one with an opaque white finish.
                                                                                                                      ›    Joint condition: Excellent, joints tight, coating
5   Certification          16                                                                                              intact, no evidence of movement or opening
                                    Additionally, tests have been        Pine-Pine and Accoya-Spruce-
6   Thermal and surface    20       completed at IFT Rosenheim,          Spruce combination. IFT is the               ›    Bead condition: Excellent
7   Contact                24       Germany according to standard        leading institute for window and
                                    methods for 2.0m length scantling    door performance in Germany. The             ›    Coating condition: Excellent, bright, no
                                    stability and adhesive bond          scantlings met both requirements.                 signs of deterioration. Some yellowing
                                    delamination resistance. The tests   Reports are available upon request.               on interior surfaces.*
                                    have been completed for Accoya-
                                                                                                                      ›    Operation: Movement of opening light was easy

                                                                                                                      This resulted in Accoya being awarded
                                                                                                                      an ‘excellent’ overall rating (9/10).
                                                                                                                      * When wiped with a wet sponge it picked up some brown pigment
                                                                                                                         suggesting the coating is eroding gradually with time.

                                                                                                         Accoya® Performance Testing Summary | V4.0 | July 2020                14
CO N T E N TS                   4   FINISH                                                                                                              THIS TEST WAS
                                                                                                                                                        CON DU CTED BY:

1

2
    Introduction

    Durability
                            2

                            3
                                    9.5 year external
3   Termite resistance      8       coatings test
4   Finish                 12

    10 year coating test   12       Independent testing institute, SHR Timber Research in
    12 year service life   13       the Netherlands, conducted a comprehensive coatings
	7 year face laminated             test on Accoya and untreated wood with opaque
  window test              14       and film forming paints and stains.
     .5 year external
    9
    coatings test          15
                                    Accoya wood constantly                no maintenance after 9.5 years –
5   Certification          16       demonstrated better coating           which is an important benefit in the
                                    performance and superior coating      long-term life cost of the product
6   Thermal and surface    20
                                    adhesion in both wet and dry          and ensures that Accoya has a
                                                                                                                              Accoya Wood                     Joinery Quality
7   Contact                24       conditions. The white opaque          superior whole life cost compared
                                    performed extremely well, requiring   to competing materials.                                                                 Nordic Pine

                                                                                                                        External coating comparison

                                                                                                         Accoya® Performance Testing Summary | V4.0 | July 2020                 15
CON T E N TS                   5   certification                                                                                                           THIS TEST WAS
                                                                                                                                                           CON DU CTED BY:

1

2
    Introduction

    Durability
                           2

                           3
                                   Accoya in structural
3   Termite resistance     8       applications – DIBt
4   Finish                12

5   Certification         16       Deutsches Institut für Bautechnik (DIBt) plays a pivotal role
                                   in the construction industry. Its approvals and assessments
    DIBt structural
    applications          16       ensures the safety of construction works. The German building
    	 CBA product
    F                              approval (‘Zulassung’) relates to Accoya sawn wood, for use
    certification         17
                                   as structural timber.
    ICC ESR decking
     certification        18
    Flame/smoke spread    19       The allowable dimensions               statically or quasi-statically.
                                                                          Fatigue-relevant stresses are
6   Thermal and surface   20       of Accoya wood are (may be
                                                                          to be excluded.
7   Contact               24
                                   used both flat and upright):
                                                                          As with most timber species,
                                   ›   Width: 100 – 250mm
                                                                          Accoya wood meets the
                                                                          requirements of normal flammable
                                   ›   Thickness: 25 – 100mm                                                        Accoya decking in Cambridge, UK
                                                                          building materials class B2
                                   Accoya wood may be used for            (DIN 4102-1).
                                   exterior load-bearing constructions
                                   in service classes 1 to 3. Outdoor     In the design of Accoya components
                                   use is allowed up to use class 3.2     the characteristic strength, stiffness
                                   providing that dirt deposits in,       and density of strength class C22
                                   for example, wood cracks or on         apply for Accoya of A1 quality, and
                                   connecting parts, is prevented.        C16 values apply for Accoya of
                                   When used in use class 3.2, a          A2 quality (according to EN 338).
                                   professional design (preventing        The certificate also gives details
                                                                                                                    The U mark indicates that Accoya is certified under
                                   water capillaries, end-grain sealing   of components and connections,
                                                                                                                    the German certification system for solid wood in
                                   / protection) are of particular        maintenance and servicing,
                                                                                                                    structural applications
                                   importance. Accoya lumber may          according to EN standards.
                                   only be used in structures loaded
                                                                                                            Accoya® Performance Testing Summary | V4.0 | July 2020           16
CO N T E N TS                  5   certification                                                                                                                   THIS CERTIFICATION
                                                                                                                                                                   WAS CON DU CTED BY:

1

2
    Introduction

    Durability
                           2

                           3
                                   Product
3   Termite resistance     8       certification                                        Mechanical
                                                                                                     Property
                                                                                                     Bending strength (EN 408)
                                                                                                                                          Value
                                                                                                                                          5-percentile characteristic values:

                                   – FCBA
4   Finish                12                                                                         ›    20°C / 65% RH                   ›     Modulus of elasticity: 5290 MPa
                                                                                                     ›    Upright test orientation        ›     Bending strength: 22.4 MPa
5   Certification         16                                                                                                              (The acetylation process does not affect the mechanical properties)

    DIBt structural                FCBA are the national centre for Wood                             Brinell hardness (EN 1534)           23.4 MPa (20°C / 65% RH)
    applications          16                                                                                                              15.1 MPa (20°C / 12% RH)
                                   Expertise and testing in France.
	FCBA product                                                                                       Impact resistance (DIN 52189-1)      Average bending strength: 50 kJ/m2
  certification           17                                                                                                              (No loss of impact bending strength by the acetylation process)

    ICC ESR decking               The 2015 certificate of conformity, part of the                   Screw holding capacity (EN 320)      Better than compared to unacetylated Radiata Pine
     certification        18       FCBA CCMQ 39/14 control agreement, was               Physical     Density                              Average: 500 kg/m3 (20°C / 65% RH)
    Flame/smoke spread    19       issued following rigorous test procedures that                    (BRL 0605)                           Characteristic: 417 kg/m3
                                   characterizes the physical, mechanical and                        Dimensional stability                Average shrinkage:
6   Thermal and surface   20
                                   biological performance of Accoya wood.                            (BRL 0605)
                                                                                                                                          ›     Radial: 0.7%
7   Contact               24                                                                                                              ›     Tangential: 1.5%
                                   Extensive evaluations were carried out by the
                                                                                                     Water uptake (EN 317)                82.5% after 91 days of immersion
                                   FCBA for more than two years, particularly
                                                                                                     Equilibrium moisture content         Average EMC during drying at 20°C:
                                   in terms of mechanical strength, dimensional
                                                                                                     (BRL 0605)
                                   stability, resistance to fungi and insects as well                                                     ›     7.5% at 95% RH

                                   as its Brinell hardness.                                                                               ›     4.5% at 65%
                                                                                                                                          ›     2.5% at 35% RH

                                   One of the requirements of the Control                            Thermal conductivity (EN 12664)      0.12 W/m·K

                                   Agreement attestation is also the performance of     Biological   Resistance against fungi (EN 113     ›     Durability class 1 (NF EN 350)
                                   initial quality checks and regular audits in order
                                                                                                     / ENV 807) after leaching (EN 84)    ›     Material suitable for use classes 1 to 4 (EN 335)
                                                                                                     (Dry rot, soft rot and white rot)
                                   to verify the consistency and consistency of the
                                                                                                     Termite resistance:                  The material is not degraded by European
                                   Accoya process.                                                                                        subterranean termites
                                                                                                     ›    Choice test (EN 117
                                                                                                          amended):                       The material is not an appropriate source of food
                                   Subsequent application certifications have                        ›    Forced feeding test (EN 118):   The material is susceptible to termite degradation
                                   been conducted by FCBA for use of Accoya in
                                                                                                     Resistance against wood boring       Material not degraded by wood boring insect larvae
                                   Decking (terraces) and windows. These                             insect larvae (EN 46-1)
                                   are available on request.
                                                                                                           Accoya® Performance Testing Summary | V4.0 | July 2020                               17
CO N T E N TS                  5   certification                                                                                                THIS CERTIFICATION
                                                                                                                                                WAS CON DU CTED BY:

1

2
    Introduction

    Durability
                           2

                           3
                                   ICC ESR decking
3   Termite resistance     8       certification
4   Finish                12

5   Certification         16       ICC-ES is a USA based institute specialised in technical
                                   evaluations of building products, components, methods,
    DIBt structural
    applications          16       and materials.
	FCBA product
  certification           17
                                   They have evaluated the compliance     The ICC-ESR report states that
    ICC ESR decking               of Accoya wood with the                typical applications for Accoya wood
     certification        18
                                   International Building Code (IBC),     products are among the highest use
    Flame/smoke spread    19       the International Residential Code     categories defined by AWPA. The
6   Thermal and surface   20       (IRC) and the ICC-700 National         service condition UC4A is general
                                   Green Building StandardTM for use      use in ground contact and fresh
7   Contact               24       in decking, porch flooring and stair   water contact and includes above
                                   threads, resulting in an Evaluation    ground applications with ground
                                   Report.                                contact type hazards or that are
                                                                          critical or hard to replace.

                                                                                                          Accoya® Performance Testing Summary | V4.0 | July 2020      18
CO N T E N TS                  5   certification                                                                                                                                THIS TEST WAS
                                                                                                                                                                                CON DU CTED BY:

1

2
    Introduction

    Durability
                           2

                           3
                                   Flame spread and smoke
3   Termite resistance     8       development testing
4   Finish                12

5   Certification         16       Southwest Research Institute undertook Flame Spread Tests
                                                                                                                                    Flame Spread Classification                Flame Spread Index
                                   and Smoke Developed Tests in accordance with the standard
    DIBt structural
    applications          16       test method for surface burning characteristics of building                                       Class I (or A)                            0 – 25
	FCBA product                     materials NFPA 255 (ASTM E84, UL 723 & UBC 8-1).
  certification           17                                                                                                         Class II (or B)                           26 – 75
    ICC ESR decking               The conclusion of the Flame Spread Test results is that Accoya wood can
     certification        18                                                                                                         Class III (or C)                          76 – 200
                                   be classified within the range of standard timber species and achieves
    Flame/smoke spread    19       Class C in this US rating system.
                                                                                                                                *Please see Accoya Performance Testing Summary for European
6   Thermal and surface   20                                                                                                      classification D in EN14915

7   Contact               24

                                                                                              Fire spread index                                                 Smoke developed index

                                                                                                    120                                                               250

                                                                                                    110                                                               200

                                                                                                    100                                                               150

                                                                                                    90                                                                100

                                                                                                                                                            [Index]
                                                                                          [Index]   80                                                                50

                                                                                                                                                                                                          a®
                                                                                                                a®

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                                                                                      *Data source: USDA(United States Department of Agriculture) Wood Handbook.
                                                                                        Lower numbers equal less flame spread or smoke.

                                                                                                                     Accoya® Performance Testing Summary | V4.0 | July 2020                             19
CO N T E N TS                    6   thermal and surface                                                                                                       THIS TEST WAS
                                                                                                                                                               CON DU CTED BY:

                                                                                                                                                               Hiroshima Prefectural
                                                                                                                                                               Technology research
                                                                                                                                                               Institute Japan

1

2
    Introduction

    Durability
                             2

                             3
                                     Thermal gain
3   Termite resistance       8       on decks – Japan
4   Finish                  12

5   Certification           16       Thermal gain on decks and terraces is a particular issue
                                     in the summer season. A thermogram image analysis was                        20°C   39°C   41°C   43°C   45°C   47°C   49°C   51°C   53°C   55°C   57°C   59°C
6   Thermal and surface     20
                                     arranged in Japan with the Hiroshima Prefectural Technology
    Thermal gain on decks   20
                                     Research Institute to assess differences between Accoya,
    Thermal performance     21
                                     thermally modified wood and three variants of commercial
    Thermal conductivity    22
                                     WPC decking.
    Hardness and wear test 23
7   Contact                 24       The ambient temperature during       This low level of thermal gain,
                                     the testing of all decks was 32°C.   combined with in-situ benefits
                                     Deck board dimensions were           derived from Accoya’s dimensional       Accoya wood                 Thermally                   Wood plastic
                                     comparable for all three types:      stability provide deck boards                                       modified wood               composite
                                                                          which are truly ‘barefoot friendly’.
                                     ›   Accoya: 26 x 140mm               In-situ benefits derived from
                                                                          Accoya stability are the boards
                                     ›   Thermally modified wood:         resisting cupping and remaining
                                         26 x 140mm                       flat, the fixings not being stressed
                                                                          and remaining flush, and finally,
                                     ›   WPC: 26 x 145mm                  the boards not suffering splintering
                                                                          with prolonged weathering.
                                     The thermographs clearly
                                     indicate thermal gain in Accoya
                                     is substantially less than the
                                     alternatives tested.

                                                                                                          Accoya® Performance Testing Summary | V4.0 | July 2020                        20
CO N T E N TS                    6   thermal and surface                                                                                                   THIS TEST WAS
                                                                                                                                                           CON DU CTED BY:

1

2
    Introduction

    Durability
                             2

                             3
                                     Improved thermal
3   Termite resistance       8       performance
4   Finish                  12

5   Certification           16       Thermal value is a critical aspect in window and door design.
                                     The thermal conductivity of the wood (lambda value) makes                                   Declared λ
6   Thermal and surface     20
                                     a significant contribution to the overall window frame
    Thermal gain on decks   20
                                     calculated thermal value.                                                                   0.25
    Thermal performance     21
    Thermal conductivity    22       Accoya thermal conductivity has        These improved levels provide
    Hardness and wear test 23        been assessed by IFT Rossenheim,       options in design, in terms of
                                                                                                                                 0.20
                                     Germany in accordance with             achieving a higher U-Value for the
7   Contact                 24
                                     EN1226: 2001 and then developed        same window design by switching
                                     into the required declared value       timber type, or alternatively using                  0.15

                                     format, under the most rigorous        a more preferred aesthetic or
                                     European assessment methods by         production friendly design without
                                                                            significantly compromising                           0.10
                                     the EN ISO 10456: 2008 procedure
                                     for determination of declared and      energy efficiency.
                                     design thermal values.                                                                      0.05
                                                                            Accoya is regularly used to achieve

                                                                                                                        [W/mk]
                                     In comparison to other standard wood   A rated windows under the UK’s
                                     types for joinery, Accoya thermal      BFRC Window Energy Rating                            0

                                     conductivity is:                       Program where other woods in
                                                                            the same design would not meet

                                                                                                                                          a®

                                                                                                                                                       d

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                                     ›   Superior to softwood by 8%         this standard.

                                                                                                                                                  ftw

                                                                                                                                                   dw
                                                                                                                                      cc
                                                                                                                                     A

                                                                                                                                                ar
                                                                                                                                                So

                                                                                                                                               H
                                     ›   Superior to hardwood by 30%

                                                                                                            Accoya® Performance Testing Summary | V4.0 | July 2020           21
CO N T E N TS                    6   thermal and surface                                                                                                     THIS TEST WAS
                                                                                                                                                             CON DU CTED BY:

1

2
    Introduction

    Durability
                             2

                             3
                                     Thermal conductivity –
3   Termite resistance       8       ASTM C177
4   Finish                  12

5   Certification           16       Precision Measurements and Instruments Corporation (PMIC)
                                     measured the thermal conductivity (lambda value) of Accoya
6   Thermal and surface     20
                                     wood and sapele test specimens according to ASTM standard
    Thermal gain on decks   20
                                     C177, with the so-called guarded hot-plate method in a dry
    Thermal performance     21
                                     nitrogen environment.
    Thermal conductivity    22
    Hardness and wear test 23
                                     The results show the thermal
7   Contact                 24                                                  Wood           Thermal
                                     conductivity of Sapele, a tropical
                                                                                species        conductivity
                                     hardwood species, to be 36% higher
                                     than that of Accoya wood. Choosing         Accoya         0.1022 W/m-K
                                     Accoya wood for the construction
                                     of windows and doors will have a           Radiata pine   0.1284 W/m-K
                                     significant positive effect on the total
                                     thermal performance and therefore          Sapele         0.1741 W/m-K
                                     the energy balance of your home.

                                                                                                              Accoya® Performance Testing Summary | V4.0 | July 2020           22
CO N T E N TS                    6   thermal and surface                                                                                                            THIS TEST WAS
                                                                                                                                                                    CON DU CTED BY:

1

2
    Introduction

    Durability
                             2

                             3
                                     Hardness and wear test                                                                        Taber abrasion weight loss
                                                                                                                                   Revolutions[rpm]

3   Termite resistance       8                                                                                                          0       500   1000   1500   2000   2500

                                     Independent testing from leading timber research institute,                             5

4   Finish                  12       BM Trada, proved that Accoya wood can withstand harsh,                                  4

                                     abrasive environments.
                                                                                                                                                                                  Accoya®
5   Certification           16
                                                                                                                                                                                  Siberian Larch
                                                                                                                             3

6   Thermal and surface     20                                                                                                                                                    European Larch

                                                                                                                                                                                  Thermowood
                                                                                                                             2

    Thermal gain on decks   20
                                     BM Trada’s testing showed that          Separate scuffing and mechanical                                                                     Western Red Cedar

                                     hardening that occurs as a result       abrasion tests carried out by BM                1
    Thermal performance     21
                                     of the Accoya process results in        Trada show that Accoya wood is
    Thermal conductivity    22

                                                                                                                       [g]
                                     greater resistance to indentation       just as good, if not better than the            0

    Hardness and wear test 23        than Western Red Cedar and two          two types of Larch, and significantly
7   Contact                 24       types of Larch. This is particularly    better than Western Red Cedar.                        Mean hardness load

                                     useful when making specification
                                                                                                                                            5
                                     choices for cladding and ground
                                     floor exterior products.
                                                                                                                                            4

                                     Siberian Larch                         Thermowood                                                      3

                                                                                                                                            2

                                                                                                                                            1

                                                                                                                                 [kN]
                                                                                                                                            0

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                                     Western Red Cedar                      Accoya wood

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                                                                                                             Accoya® Performance Testing Summary | V4.0 | July 2020                   23
CO N T E N TS                  7   CONTACT

1

2
    Introduction

    Durability
                           2

                           3
                                   Get in touch
3   Termite resistance     8       Please email us with enquiries
                                   and the responsible sales manager
4   Finish                12       will follow up promptly:
5   Certification         16       sales@accsysplc.com

6   Thermal and surface   20       United Kingdom and                                        Accsys run an Approved
                                   World Wide Enquiries                                      Manufacturer Training Programme
7   Contact               24
                                   Brettenham House                                          and we would encourage all
                                   19 Lancaster Place                                        manufacturers planning to use
                                   London WC2E 7EN                                           Accoya to contact their distributor
                                   +44 (0) 207 421 4300                                      or Accsys directly to arrange for
                                   Benelux enquiries                                         this training programme. The
                                   Postbus 2147                                              Approved Manufacturer status also
                                   6802 CC Arnhem                                            brings a number of benefits which
                                   +31 (0) 26 320 1400                                       support market activity.

                                   North American enquiries
                                   5000 Quorum Drive #620
                                   Dallas, Texas 75254
                                   +01 972 233 6565

                                   Accoya is made by Accsys Technologies. Accoya ® and the Trimarque Device are registered trademarks owned by Titan Wood Limited, a wholly owned subsidiary of
                                   Accsys Technologies PLC , and may not be used or reproduced without written permission. Accoya wood should always be installed and used in accordance with the
                                   written instructions and guidelines of Accsys Technologies and/or its agents (available upon request). Accsys Technologies accepts no liability for any defect, damage or
                                   loss that may occur where such written instructions and guidelines are not adhered to.

                                   The information contained within this document has not been independently verified, and no warranty (express or implied) or representation is given in respect of the
                                   same, including without limitation as to its accuracy, completeness or fitness for any purpose. Accsys and its affiliates, officers, employees or advisers expressly disclaim   24
                                   any liability to the fullest extent permitted by law for any loss or damage whatsoever arising in respect of such information or the result of having acted upon it.
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