ARC Liquid Membrane Roof Coat

Coating methodology

For all roof types (metal, tile, and decramastic), ARC roof coating is installed in four stages. Our comprehensive process ensures that your roof will be restored to the highest level and be waterproof and weathertight.

Our roof coating service is typically completed between two to four days — dependent on the scope of the job and the weather.

You can trust ARC to protect your investment and be confident in our service with our warranties — 5 Year Workmanship Warranty and 10 Year Product Warranty.

Stage 1: Clean

Metal and tile roofs will be waterblasted to remove all dirt and loose and flaking material. Decramastic roofs will either be waterblasted or soft washed depending on the condition of the roof.

If moss and mould is present, the roof will be treated with ARC Roof Cleaner, a slow release, biodegradable, antifungicide treatment.

Stage 2: Prep and repair

Metal roofs
All loose nails will be removed and refixed with screws. All ridges, valleys and flashings will be checked and repaired or replaced as required.

Tile roofs
All tiles will be checked for cracks and replaced where required. Ridges and barges will be checked and where required will be replaced and repointed with the ARC Flexible Pointing System. Valleys will be checked, repaired, or replaced as required.

Decramastic roofs
Any dents in chip-coated tiles will be popped out where possible. Tiles will be replaced where they cannot be repaired. Ridges, flashings, and valleys will be checked and repaired or replaced as required.

Stage 3: Treat and seal

Metal roofs
Any areas of red or white rust will be treated with a rust converter or anti-corrosive primer to prevent any further rusting and degradation.

Tile roofs
Tile roofs will be sealed with ARC’s Waterproof Membrane Sealant System for the areas that need more protection.

Decramastic roofs
Any areas of red or white rust will be treated with a rust converter or anti-corrosive primer to prevent any further rusting and degradation.

Stage 4: Coat

Once the roof is clean and appropriately treated, ARC Liquid Membrane Roof Coat will be applied in your chosen colour.

This final step completely seals the roof with a waterproof membrane to protect it for many years to come. Our Product Warranty is 10 years, however, we expect the coating to last well beyond this period.

About ARC Liquid Membrane Roof Coat

ARC Liquid Membrane Roof Coat protects and revitalises your roof. Unlike regular paint, our coating creates an elastomeric polyurethane waterproof membrane that acts as a secondary barrier for your property. Designed for New Zealand’s weather, ARC Liquid Membrane Roof Coat provides superior UV resistance to protect roofs from NZ’s uniquely harsh ultraviolet levels.

10 Year Product Warranty
Elastomeric polymers create a waterproof membrane within the coating
High UV resistance protects roofs from NZ’s harsh ultraviolet levels
Specialised additives, solvents, and water-based carriers create a flexible and highly adhesive coating.

Colour options

Whether you’re looking for a colour to match your existing roofing material or if you want to change colour and update the look of your roof, our coating is available in a wide range of colours to suit your needs.

Many of our coating colours are matched to the COLORSTEEL® range and all colours are available for all roof types.