Our patented Activate® Technology is not just about the inclusion of Aluminium, Zinc and Magnesium, but the unique composition and microstructure of the AM alloy coating to deliver enhanced corrosion resistance.
ZINCALUME® with Activate® technology has been formulated to give a significantly longer service life than a galvanised coating. This is of particular value in New Zealand where the prevailing winds carry corrosive salt laden air many kilometres inland. Combining the corrosion protection of aluminium with the sacrificial protection of zinc creates an alloy that's ideal for roofing and cladding in New Zealand's demanding environment.
How Activate® technology works:
- The aluminium/zinc/magnesium compounds are strategically positioned in the coating to activate at the start of weathering when they are most vital to provide sacrificial protection.
- The magnesium compounds encourage the formation of a more robust barrier at cuts and scratches, slowing the rate of subsequent corrosion.
- The magnesium compounds also ‘activate’ the metal coating resulting in more effective, longer-lasting sacrificial protection.
ZINCALUME® is produced by a continuous hot dip process similar to that used to manufacture galvanised steel. While both ZINCALUME® steel and galvanised steel products have a steel base, galvanised steel has a coating of 100% zinc, whereas ZINCALUME® has an alloy coating of Aluminium 55%, up to 3% Magnesium and the remainder Zinc.
ZINCALUME® conforms to AS1397:2011.
Zincalume® product uses:
- Roofing and Flashings
- Wall Cladding
- Gutters and Downpipes
- Fences
- Garage Doors
- Garden Sheds
ZINCALUME® is Living Building Challenge Red List Approved
Residential and commercial ZINCALUME® Warranty
*Not recommended in Extremely Severe, Very Severe or Severe Environments.
| MODERATE Environments | MILD Environments | ||||||||
| (Typically starts 500 – 1000 metres from breaking surf such as found on exposed coasts or in the immediate vicinity of calm saltwater such as estuaries) | (Typically starts 5 kilometres - depending on your location, from breaking surf such as is found on exposed coasts or greater than 1 kilometre from calm saltwater such as estuaries) | ||||||||
| Roofing | Wall Cladding | Gutter Downpipes | Fascia | Roofing | Wall Cladding | Gutter Downpipes | Fascia | ||
| ZINCALUME® | Warranty | 20 Years | 20 Years | 10 Years | 10 Years | 25 Years | 25 Years | 10 Years | 10 Years |
| Maintenance | Rain washing | Manual washing every 6 months | Manual washing every 3 months | Manual washing every 3 months | Rain washing | Manual washing every 6 months | Manual washing every 3 months | Manual washing every 3 months | |
This chart is intended as a guide only. Design, position and other factors can influence if Zincalume® is suitable for your project. Please contact New Zealand Steel or your supplier for further advice. Warranty inquiries can be sent to nzs.warranty@bluescopesteel.com.
