Decks

Coating Process for Decks

We are able to coat almost all types of decks with our ARC Pro Liquid Membrane Coating. Our process for decks use a four coat system, ensuring that your outdoor area will be restored to the highest level and be waterproof and weathertight.

Our 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: Inspection

We start with a thorough check of your deck to identify any damage, leaks, or areas needing repair before we begin coating.

Stage 2: Professional cleaning

We remove all dirt, moss, and debris, then water blast the entire surface to create a clean base for the coating to properly adhere.

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

Stage 3: Prep and repair

Once clean, we prepare the deck surface for coating.

Any cracks, holes, or damaged areas are repaired. We seal joints, edges, and flashings to ensure your deck is watertight before coating.

Stage 4: Priming (if required)

Depending on your deck surface, we may apply a primer to improve adhesion and extend the life of the coating.

Stage 5: Application of coating

After the deck is clean and appropriately treated, two waterproof base coats are applied. Once the base coats have cured, two to four coats of ARC Pro Liquid Membrane Coating will be applied in your chosen colour.

This step completely seals the deck 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.

Stage 6: Final check and clean up

Once the coating has cured, we inspect the entire deck to ensure it meets our quality standards.

We leave your property clean and your deck ready to handle the elements.

About ARC Liquid Membrane Coating

ARC Liquid Membrane Coating protects and revitalises your deck. 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 Coating provides superior UV resistance to protect decks from NZ’s uniquely harsh ultraviolet levels.

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

Why choose ARC?

Peace of mind, from the quote to the final coat, we understand that your property is likely your biggest investment — and it deserves to be looked after properly.

At Affordable Roof Coating, we treat every property as if it were our own, with the care, respect, and attention to detail you should expect from true professionals. We’ve seen what happens when corners are cut: leaks, damage, and disappointment. That’s why we’re committed to doing things the right way — no shortcuts, no surprises, just honest workmanship that lasts.

Here’s what you can expect when you work with us:

Thorough Inspection
Before any work begins, we inspect your deck to ensure it’s suitable for our coating system. If repairs are needed, we’ll let you know straight away — we believe in honesty, not cover-ups.
Proper Preparation
Every surface is pressure cleaned and prepped to the highest standard. We take the time to do it right, because a lasting finish depends on proper prep work.
Ensuring Your Deck is Protected
From sealing damaged areas to replacing fasteners, we make sure your deck is sound before any coating goes on, so your investment is protected long-term.
Reliable, Local Service
You deal directly with us — no sales reps or middlemen. We’re hands-on, responsive, and treat your property with care and respect.
Guaranteed Workmanship
We back every job with a 5-year workmanship warranty and a 10-year product warranty, so you can feel secure long after we’ve finished.

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.