MagnaFlow – for the demanding coastal environments where anti-corrosive protection is essential.
The superior corrosion resistance of MagnaFlow means it is an ideal choice for more demanding environments, such as roofs 100m from the coastline. The magnesium in the aluminium/zinc/magnesium alloy coating helps zinc flow over cut edges, sealing them and providing long term protection against corrosion.
‘Self healing’ - a proven innovation for over 16 years
The first signs of corrosion on any steel roof often appear where the roofing product has been penetrated by holes (to secure a satellite dish, for example) or at the cut edges necessary in any roof installation.
Our unique alloy technology combines zinc and aluminium with magnesium. The magnesium enables the zinc to flow and self-heal the cut edges that would otherwise expose the steel substrate to atmospheric conditions, ensuring a much longer life for your roof at a modest additional cost.
Industrial strength
For environments where corrosive chemicals may be present, MagnaFlow ‘PLUS’ paint system offers added protection. This chemically resistant thermosetting waterborne acrylic is ideal for industrial environments such as sites near airports, dairy factories, petrol stations, and areas with geothermal activity.
Please note, PLUS paint is available in a restricted colour range and may have longer lead times. Consult with your ColorCote distributor or contact us directly for more information.
Colour choice
MagnaFlow is available in all the same great colours as ZinaCore so there’s plenty of choice to match with other features on your house.
For full details download a copy of our Colour Brochure or use our Colour Visuliser
Warranty Schedule
Nominally no salt deposits or smell of salt in the air. Distance from the coastline is dependent on prevailing weather patterns but typically this can be 5km or more from either the West or East Coast.
| NZ MRM Code of Practice A-B | |||
| Roofing | Wall Cladding | Accessories | |
| Paint | 18 | 15 | 10 |
| Perforation | 50 | 30 | 15 |
| Maintenance | Rain Washing | Manual washing every 12 months | Manual washing every 6 months |
As an indication, this area may have some salt deposits and the occasional smell of salt in the air. On the East Coast(s) this area may start from as close as 500m to the shoreline whereas on the West Coast(s) it can be as far inland as 1-5km from the shoreline*.
| NZ MRM Code of Practice C | |||
| Roofing | Wall Cladding | Accessories | |
| Paint | 18 | 15 | 10 |
| Perforation | 40 | 25 | 15 |
| Maintenance | Rain Washing | Manual washing every 12 months | Manual washing every 6 months |
This area is influenced by coastal salt and is likely in the immediate vicinity of relatively calm salt water, to be subject to light salt deposits and the frequent smell of salt in the air. On the East Coast(s) this area may be as close 100m from the shore, whereas on the West Coast(s) it may be as far inland as 1km*
| NZ MRM Code of Practice D | |||
| Roofing | Wall Cladding | Accessories | |
| Paint | 15 | 15 | 10 |
| Perforation | 30 | 20 | 15 |
| Maintenance | Rain Washing | Manual washing every 6 months | Manual washing every 6 months |
This area typically is very close to the shoreline and is subject to heavy salt deposits and the almost constant smell of salt in the air. Depending on prevailing weather patterns in may start as close as 500m on the West Coast(s) and within 25-100m on the East Coast(s). Some geothermal areas may be included*
| NZ MRM Code of Practice E | |||
| Roofing | Wall Cladding | Accessories | |
| Paint | 15 | 15 | 10 |
| Perforation | 20 | 20 | 15 |
| Maintenance | Rain Washing | Manual washing every 3 months | Manual washing every 3 months |
This environment is typically immediately adjacent to breaking surf, and would include jetties, wharfs and offshore constructions and may include sites on offshore islands. Extremely severe areas may also include areas with geothermal activity*.
| NZ MRM Code of Practice F | |||
| Roofing | Wall Cladding | Accessories | |
| Paint | n/a | n/a | n/a |
| Perforation | n/a | n/a | n/a |
| Maintenance | n/a | n/a | n/a |
* These descriptions are general in nature and not intended to be definitive.
Each geographic site needs to be assessed on its own merits.
Explore our selection of completed architectural projects
Need more technical information?
This website is primarily to help you choose the right roof. When you or your team of professionals want all the technical details of MagnaFlow like design, engineering and installation requirements simply download our brochure.
