Don't replace your asbestos roof — encapsulate it
Encapsulating your asbestos roof with Noxyde can be a longer-term and less costly solution than replacing it with iron that is subject to corrosion.
Before you replace, have it inspected
If you have issues with your asbestos roof, then before replacing, let us arrange an exterior inspection with an approved asbestos consultant to determine whether the roof can be salvaged or not. To go ahead and replace the roof without checking first could be an unnecessary and very expensive exercise, compared to preparing the existing roof and encapsulating it with an elastomeric waterproofing wrap such as Noxyde.
Don't make a wrong and potentially costly decision — it could be the best investment you will make.
Noxyde® — Proven Asbestos Encapsulation
Noxyde is the anti-corrosion waterproofing membrane used for asbestos encapsulation. It is applied directly to sound, prepared asbestos-cement roofing without the need for a primer, forming a seamless, flexible barrier that waterproofs and protects.
Proven in New Zealand for the last 30 plus years
- Water-based, single component and odourless
- 200% elongation — moves with the roof
- Excellent UV tolerance — never becomes brittle
- Corrosion-proof the fasteners and any metal penetrations
- Useful in the New Zealand environment
- Very safe and environmentally friendly
- Applied by approved asbestos applicators
Asbestos roofs encapsulated with Noxyde
Why asbestos roofs last — and why they fail
Asbestos roofs have been around for over 70 years, and have lasted so long because they do not corrode in New Zealand's severe coastal environment. They do tend to deteriorate on the topside, due to atmospheric pollution, UV, and infestation of moss and lichen, which can break down the porous surface.
The underside of asbestos roofs, however, very rarely deteriorates — and swab and airflow tests in building cavities will in 99% of cases confirm this. That means the roof over your head is usually a candidate for encapsulation, not removal.
What Noxyde brings
- Waterproof, with excellent UV tolerance — it will never become brittle
- Stays a flexible membrane with 200% elongation, absorbing movement and thermal expansion
- Corrosion-proofs the fasteners and any metal penetrations
- Particularly useful in the New Zealand coastal environment
- Single component, water-based and odourless — safe and environmentally friendly to apply
How an asbestos roof is salvaged
Independent inspection
We arrange an exterior inspection with an approved asbestos consultant to determine whether the roof can be salvaged. Swab and airflow tests in building cavities confirm the underside condition — in 99% of cases it is sound.
Treat and prepare
Approved asbestos applicators treat the roof to remove moss and lichen, then attend to fasteners, visible cracks and any damage.
Encapsulate
Two thick coats of Noxyde membrane are spray applied, wrapping the roof in a seamless elastomeric waterproofing layer.
20–30 more years of life
The roof is rendered safe and watertight, with no corrosion risk of the kind an iron replacement would introduce. Applied to specification, Noxyde carries a conditional 10-year product performance guarantee.
Asbestos roof encapsulated with Noxyde
Another 20–30 years, safely
Using this process, you can extend the life and render your asbestos roof safe for another 20–30 years, without having to worry about the corrosion that could occur with an iron roof replacement. Noxyde applied to specification comes with a conditional 10-year product performance guarantee, and roofs already coated with Noxyde have gone over 20 years in New Zealand without any further maintenance or problems.
Conditional product performance guarantee when Noxyde is applied to specification by an approved applicator.
Other encapsulation and waterproofing systems
Products and projects that protect roofs, steel and concrete across New Zealand.
NoxydeNoxyde Anti-Corrosion Coating
Paint straight over prepared rust, stopping corrosion for decades.
Noxyde is the only anti-corrosion waterproofing membrane on the market that can be applied directly over clean, prepared rust — no separate primer required. For over 29 years it has protected New Zealand's most severe coastal environments, from saltwater estuary bridges to iconic steel roofs. It is also used to extend the life and safely encapsulate asbestos roofs, locking fibres in place and adding decades of waterproof protection without the cost of removal.
Learn more
Rust-Oleum9100 Epoxy
One epoxy. Every surface. Every condition.
Rust-Oleum 9100 is a proven swimming pool paint applied to New Zealand's largest commercial pools right through to thousands of backyard owners. It is also the same versatile epoxy used on some of New Zealand's biggest steel constructions — direct to metal, concrete and prepared floors. Because every job is different, speak with one of our team first and we will specify the right system, activator and finish for your exact surface.
Learn more
ProjectNadi International Airport
A tropical international airport metres from the ocean, protected with Noxyde — proven where failure isn't an option.
Read the project
ProjectSPARK BUILDING WAITAKERIES
A flat concrete roof exposed to heavy rainfall waterproofed with Doublecoat Aluminium membrane coating — a system built for continual immersion and long-term protection.
Read the project