MAGNA FLOW - TECHNICAL INFORMATION - COLORCOTE
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Technical Information
Magna
Flow
Pre-painted steel with
™
magnesium added
technology for superior
corrosion resistance.
colorcote.co.nzA remarkable substrate MagnaFlow is a highly durable product with improved cut edge performance
that heals its own cuts designed to give excellent colour retention and high formability at moderate
cost.
ColorCote® MagnaFlow™ takes our standard zinc/aluminium Technical
alloy-coated steel substrate to the next level with the addition of ColorCote MagnaFlow
Conforms to AS/NZS2728:2013
magnesium. This enables the zinc to ‘flow’, which seals the cut
ting
ons)
Suitable for ISO9223:2012
a
opti
m 2) alloy co
edges, preventing exposure to premature corrosion. This makes it Atmospheric Classifications C1 – C4
paintt
us o
a
Pl c
ideal for harsher environments and those nearer the coast.
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Choose the right ColorCote roof and it will always last longer.
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Corrosion resistant conversion coating.
C
Primer Gloss
Flexible corrosion resistant primer. Nominal film Nominally gloss levels are 25%, measured in
thickness 7µ on the top side and 5µ on the reverse. accordance with ASTM D523-14 (60 degrees).
A range of our colours can also be supplied in
Finish Coat a low gloss version if required.
Flexible exterior acrylic, polyester or modified
Strippable Film
polyester coating. Nominal film thickness 18µ.
Products can be supplied with an optional
strippable protective film at extra cost. This material
Backing Coat
has a relatively short life span when exposed to
Shadow Grey (standard colour) wash coat, sunlight and weather. It should be removed either
5µ nominal thickness. just before, or immediately after installation.
If stored indoors strippable film should be removed
within 12 months of delivery from ColorCote.
Need an extra durable finish?
MagnaFlow PLUS (previously known as MagnaFlow X) uses exactly the same substrate but comes with a
more protective paint system for use in chemical or industrial environments.
Technical Finish Coat
Leading Manufactured ColorCote MagnaFlow PLUS The exterior coat of MagnaFlow PLUS is a
New Zealand and marketed in Conforms to AS/NZS2728:2013 chemical resistant thermosetting water borne
innovation in New Zealand for Suitable for ISO9223:2012 acrylic paint system with a nominal 20µ film
pre-painted steel more than Atmospheric Classifications C1 – C4 thickness. MagnaFlow PLUS is only available in a
and aluminium 40 years limited range of colours.
Primer
Flexible corrosion resistant primer on both sides.
Nominal film thickness 7µ on the top side and 5µ on
the reverse.
01 colorcote.co.nz ColorCote® MagnaFlow™ Technical Information 02Choose the right Atmospheric environments
roof for your Usage guide
environment
Whangarei
Auckland
Tauranga
Hamilton Mild Moderate Marine Severe marine Very severe
ISO Category 1-2 ISO Category 2 ISO Category 3 ISO Category 4 ISO Category 5
Tokoroa
Areas far inland Inland other than Areas influenced by BEGINS between 100-400 metres Off shore and within 100-400 metres Geothermal
far inland coastal salts from the coast. May extend inland from the coast. May extend inland
Gisborne
depending on local conditions depending on local conditions
New Plymouth
Ohakune ZinaCore
Napier
MagnaFlow
AlumiGard
Blenheim
Buildings with exposure to corrosive chemicals such as airports, gas stations, fertiliser or dairy factories may These are general guidelines only. Building location, design & aspect need to be taken into account.
require the ColorCote PLUS paint system to ensure roof or cladding is better protected from chemicals in the To ensure a warranty will be given, go online to colorcote.co.nz and complete a warranty enquiry form.
Nelson
environment. Please contact ColorCote for a recommendation if you are unsure which paint system is required.
Westport Wellington MagnaFlow performance testing The magic of magnesium Warranty terms
Scratch resistance Tested under New Zealand’s most demanding All steel roofs are susceptible to the elements Depending on the environment, Pacific
Good scratch resistance. Testing includes environmental conditions. along cut edges however the addition of Coilcoaters offers warranties of differing
needle scratch test – no marking of paint Results from lab tests are backed up with ongoing magnesium to the standard zinc/aluminium lengths on MagnaFlow for residential buildings.
surface when a needle with a 2kg weight testing in New Zealand’s environmental conditions. alloy in Magnaflow provides superior corrosion
Christchurch Environment (ISO CAT)
attached is drawn across. ASTM D5178-13. Test sites are in Penrose, Auckland and Muriwai Beach, resistance in this area. As time goes on it allows
Mt Hutt 1-3 4 5
northwest of Auckland, providing real world testing the protective metal coating to microscopically
Impact resistance in demanding industrial & marine environments. flow over the cut edge. At this point a sacrificial
Paint 18 yrs 15 yrs 15 yrs*
AS/NZS2728:2013 Table 2.2 and Appendix E. anticorrosive reaction takes place and a robust Roofing
Timaru seal is created. Perforation 30 yrs 25 yrs 15 yrs*
KEY No loss of paint adhesion after a test Salt spray
Very severe marine piece is struck on the reverse side with Exposed cut on standard zinc/aluminium coated steel
Meets the requirements of Wall Paint 15 yrs 15 yrs 15 yrs*
Severe marine a specified force, in line with the test
AS/NZS2728:2013 Sections 2.8 and 2.10 cladding
methodology described in Appendix E. Zinc Perforation 25 yrs 20 yrs 15 yrs*
Dunedin Severe
Aluminium
Steel substrate
Moderate Bend test Humidity resistance Red rust Guttering & Paint 10 yrs 10 yrs 10 yrs*
Gore Meets the requirements of Downpipes
Mild AS/NZS2728:2013 section 2.6.1 and Perforation 12 yrs 12 yrs 10 yrs*
Invercargill Geothermal Appendix F – No loss of paint adhesion AS/NZS2728:2013 Sections 2.8 and 2.9
when bent around a diameter equal to five Anticorrosive reaction of MagnaFlow Paint 10 yrs 10 yrs 10 yrs*
times the thickness of the sheet. Fascia
QUV resistance Zinc Perforation 15 yrs 15 yrs 15 yrs*
(durability of coating system) Aluminium
Heat resistance Steel substrate Magnesium
* A warranty on MagnaFlow in ISO 5 is subject to prior approval by
Meets the requirements of AS/NZS2728:2013 Pacific Coilcoaters. Commercial warranty details available upon request.
Suitable for continuous service up to Refer to specific warranty information for full terms and conditions,
Section 2.8 and Table 2.4 after 4000hrs Magnesium allows including exclusions and minimum maintenance requirements.
Representative of NZ environmental classification borders only. Contact ColorCote via the warranty enquiry 100ºC. Continuous service at higher Buildings close to industrial areas which are exposed to corrosive
exposure. alloy to flow over cut
form online or by using the free ColorCote app to determine the environmental classification, recommended temperatures may cause some colour edge and provides
chemicals may require MagnaFlow PLUS (for added protection via a
chemical resistant thermosetting water borne acrylic paint system).
product and warranty information for your specific roof or cladding project. change and damage to the paint film. Note: Tests are conducted on a flat panel. long term protection Visit colorcote.co.nz and complete the warranty enquiry form.
03 colorcote.co.nz ColorCote® MagnaFlow™ Technical Information 04 ColorCote® MagnaFlow™ Technical Information 05Performance Roof pitch Site practice Fastenings
Outdoor durability Do not use a pitch less than three degrees (eight If nestable profiles become wet while closely Class 4 coated screws will give the best service life
Colour change during service will depend on the degrees for corrugated profile) to avoid ponding stacked, formation of wet storage stain or ‘white with ColorCote MagnaFlow and MagnaFlow PLUS
colour chosen, aspect, design of the structure and and premature degradation of the coating system. rust’ is inevitable. products. Galvanised nails with pre-painted washers
the environment. can be used on MagnaFlow.
To minimise the possibility of inadvertent damage:
Do not use stainless steel or monel fasteners on
Some chalking may occur. A maximum rating of 2 is Inspect deliveries on arrival. If moisture is
• ColorCote MagnaFlow and MagnaFlow PLUS
expected after 20 years exposure, when measured
in accordance with AS/NZS1580.481.1.11:1998.
Storage present, individual sheets should be dried products.
immediately with a clean rag and then stacked
and filleted to allow air to circulate and complete
Dissimilar metals In all cases ensure the fasteners are installed
Scale is between 0 and 5 with a lower number On site – Wet or humid conditions correctly with the ColorCote MagnaFlow and
indicating less chalking. the drying process.
On no account should uninstalled When dissimilar metals come into MagnaFlow PLUS product.
Well ventilated storage is essential.
• For further details refer to the MRM Code of
coils and sheets be allowed to get contact with each other, the electric
Recommended end uses and stay wet. Rain or condensation
Always store metal products stacked and filleted
under cover in clean, well-ventilated areas. potential difference between the
Practice or consult your fastening supplier.
metals establishes a corrosion
Sealing and jointing
MagnaFlow is suitable for roofing, cladding, and is drawn between the surfaces by Outside storage. Where outside storage is
•
rainwater goods. MagnaFlow is ideal for animal
capillary action, and then cannot unavoidable, make provision for a fall to allow cell, and accelerated corrosion can
shelters, flashings, interior uses, and exterior Where sealed joints are required, use only neutral
environments where corrosion levels are moderate. Important evaporate normally. This can cause water to run off. Fillet the sheets and cover
with tarpaulin, allowing air to move freely and
occur. cure silicon rubber sealant together with mechanical
MagnaFlow PLUS is suitable for roofing, cladding deterioration of the coating leading circulate. To avoid this problem, the following fasteners such as aluminium rivets. Do not weld or
and rainwater goods in environments where there is ColorCote MagnaFlow and to a significantly reduced life precautions should be observed:
solder ColorCote products.
Installation. Best practice is to install upon
•
a high risk of deterioration from corrosive chemicals MagnaFlow PLUS are not suitable expectancy and poor appearance.
in environments, such as on industrial sites. for use in the following situations:
delivery to avoid exposure to wet or humid
elements.
• Avoid contact or discharges of Cut edge sealing
Off site – Long term storage water from brass or copper pipes
For information concerning product use in areas Coil-on is not required for ColorCote MagnaFlow
• For water tanks or areas It is the responsibility of the roofing contractor on to ColorCote MagnaFlow and
not covered by ColorCote MagnaFlow or MagnaFlow of coils and MagnaFlow PLUS.
PLUS, refer to the ColorCote AlumiGard technical where a constantly wet to avoid damaging the roof sheeting during its
MagnaFlow PLUS.
environment is maintained. Rollforming performance may installation and fixing. Never drag sheets from a
Minimum maintenance
information brochure or contact ColorCote for details.
be affected if coils are stored for pile. Remove by ‘turning off’ the stack. Lift sheets • Do not use non-galvanised
You can check which ColorCote product is right for • In direct contact with onto the roof, and do not drag over the eaves or steel, copper, brass, lead,
your building by completing the warranty enquiry more than 12 months. Warranty the purlins. Use clean footwear. Remove swarf and
The service life is extended by regular
concrete or where lime stainless steel or monel metal washing. A manual wash every six months is
form online at colorcote.co.nz for material painted more than other contaminants regularly. Avoid transferring
deposits are evident. in direct contact with ColorCote recommended, more often if contaminants
12 months prior is by application sunscreen from hands or knees on to painted
build up. Regularly inspect for damage and
• In contact with soil MagnaFlow as this can degrade the paint quality. MagnaFlow and MagnaFlow
to ColorCote only. failing fasteners, and repair these. Failure to
(allow a 75mm run off Refer to the MRM Code of Practice for further
PLUS. regularly wash areas that don’t receive natural
information.
below cladding sheets • Do not use lead flashings rainfall will void warranty.
Warranty app is to ground level). in contact with ColorCote
available on the MagnaFlow and MagnaFlow PLUS Unwashed areas
App Store and Touch-up paint products. Soft edge aluminium or These are typically those areas that are
not washed by natural rainfall, such as the
ColorCote is a baked on paint system which has notching of flashings are the best
Google Play. different weathering characteristics to standard solutions.
underside of eaves, sheltered roofs or wall
cladding, under solar panels etc. ColorCote
air drying paints. Do not use touch-up paint on
• Tanalised timber contains recommends the exclusion of unwashed areas
ColorCote products. Scratches should be
Handling and rollforming left alone to heal. Installation copper, so must not be used in
by design wherever possible.
direct contact with ColorCote Where this is not possible, then a regular
To avoid damaging the paint surface the material
Refer to the MRM Code of washing programme should be put in place.
must be handled carefully during transport
and rollforming.
Clean up Practice for correct installation
MagnaFlow and MagnaFlow Contaminants should be removed by low
Installation procedures involving self-drilling screws,
PLUS products. Use PVC tape or pressure waterblasting (less than 1000psi) or
Pacific Coilcoaters does not recommend the use guidelines, particularly in washing with water and a soft bristle brush
drills and hacksaws etc will leave deposits of swarf similar barrier to isolate potential
of rollforming lubricants on our products. regard to underlays/building at least every 6 months, or more frequently
and metal particles. These particles including blind problem points of contact
in severe environments or if contaminant
The use of rollforming lubricants will affect rivet shanks, nails and screws should be swept and papers, penetrations, flashings,
between materials. build-up keeps occurring. For full information,
performance of pre-painted metal and will lead washed from the roof regularly. Refer to the MRM fasteners, pitch and storage. see the ColorCote Minimum Maintenance
to staining and uneven, premature fading. Code of Practice for further information.
Schedule.
ColorCote® MagnaFlow™ Technical Information 06 ColorCote® MagnaFlow™ Technical Information 07 ColorCote® MagnaFlow™ Technical Information 08Leading Manufactured
New Zealand and marketed in
innovation in New Zealand for
pre-painted steel more than
and aluminium 40 years
968 Great South Road, PO Box 12 046, Penrose, Auckland 1642.
Telephone: 0800 279 979 Facsimile: +64 9 579 7515
www.colorcote.co.nz
ColorCote® is a registered trademark of Fletcher Steel Ltd.
ZinaCore™, MagnaFlow™ and AlumiGard™ are trademarks
of Fletcher Steel Ltd.
Pacific Coilcoaters is a trading division of Fletcher Steel Limited,
a Fletcher Building Limited Business.
© Copyright PCC 2022
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