A steel material that heals its own cuts.
A pre-painted steel solution designed for coastal and more corrosive environments.
UniCote® Coastal uses an AM210 zinc/aluminium/magnesium alloy coating to provide added corrosion resistance for roofing and cladding applications exposed to salt, moisture and demanding environmental conditions.
The added magnesium enables the zinc to ‘flow’ which seals the cut edges preventing exposure to premature corrosion.
Built for coastal project confidence
Suitable for projects from 0–400m+ from marine influence, subject to project-specific assessment and warranty pre-approval.
Why use UniCote® Coastal?
Built for coastal environments
Suitable for projects from 0–400m+ from marine influence and ISO 9223:2012 Categories 1–4.
AM210 protective coating
Made with a zinc/aluminium/magnesium alloy coating designed to provide added corrosion resistance.
30% thicker coating
Features a 210 g/m² coating weight, offering a thicker protective coating compared with other industry alternatives.
Non-combustible metal
Suitable for Bushfire Attack Level BAL FZ and tested to relevant Australian standards.
Colour and finish choice
Available in selected Essential, Tasman, Matt and Satin options for roofing and cladding applications.
Roofing and cladding profiles
Suitable for a wide range of roofing and architectural cladding profiles, including standing seam, interlocking, nailstrip, corrugated and more.
How UniCote® Coastal works
The magic of magnesium.
UniCote® Coastal uses an AM210 zinc/aluminium/magnesium alloy coating to help protect steel in coastal and more corrosive environments.
The addition of magnesium allows the protective zinc coating to microscopically flow over the cut edge (drilled or formed) where the steel is most susceptible to the corrosion. At this point a sacrificial anti-corrosive reaction takes place and a robust seal is created.
This makes UniCote® Coastal a strong option for projects requiring added durability beyond standard pre-painted steel.
Where to use UniCote® Coastal
• 0-400m+ from marine influence
• ISO 9223 Category 1–4
UniCote® Coastal is designed for roofing and cladding projects exposed to coastal conditions, salt-laden air and more corrosive environments.
It is suited to residential, commercial and architectural applications where enhanced corrosion resistance is required, while still offering a broad choice of colours, finishes and profiles.
Coastal or Extreme?
UniCote® Coastal is designed for coastal and more corrosive environments where a steel solution is suitable.
For very severe marine or industrial environments, UniCote® Extreme may be the more appropriate option. UniCote® Extreme is a marine-grade aluminium solution designed for the toughest exposure conditions.
If you are unsure which solution is right for your project, compare the UniCote® metal solutions or start the warranty pre-approval process.
Warranty pre-approval within 48 hours
Every coastal project is different. Location, exposure, application, design details and unwashed areas can all affect product suitability and warranty eligibility.
Submit your project details through UniCote® warranty pre-approval to confirm the right solution before your project is supplied.
Technical Snapshot
Substrate: Steel
Coating: AM210 zinc/aluminium/magnesium alloy
Coating weight: 210 g/m²
Environmental suitability: 0–400m+ from marine influence
ISO category: ISO 9223:2012 Category 1–4
Standards: AS/NZS 2728:2013, AS 1397:2021, AS 1530.3
BAL: BAL FZ
Warranty: Project-specific, pre-approval available within 48 hours
Data sheet
View key technical information for UniCote® Coastal, including coating details, applications, standards and environmental suitability.
Use the data sheet to support specification and project documentation.
Colour and finish options
8 stocked colours
Plus many more from our Essential and Tasman range with a 1 tonne minimum and quick lead times!
Designing with steel in coastal environments?
Download the UniCote® coastal roofing and cladding whitepaper to understand how coating selection, environment and project detailing can support long-term performance in coastal applications.
Need help choosing the right coastal solution?
Submit your project for warranty pre-approval or speak with UniCote® for guidance on the right metal solution for your project location, application and exposure conditions.