Without ACC
With ACC
Stop the repair cycle.
One system, three problems solved.
ACC Weathering Membrane is a self-adhesive, multi-layer membrane that restores waterproofing, protects against corrosion and extends the life of ageing metal and concrete roofs — without the cost and disruption of full replacement.
A product of JMP Holdings NZ — supplied to roofing and waterproofing contractors nationwide.
The system, applied.
Most roof fixes only solve one thing.
An ageing industrial roof rarely fails in just one way — and most solutions treat a symptom. ACC addresses the real causes at once.
Persistent leaks
Water ingress through laps, fasteners and flashings.
Corrosion & rust
Moisture, ponding and coastal salt air accelerating deterioration.
Endless recoating
Coatings redone every few years that never resolve the issue.
Engineered for real roofs.
A multi-layer membrane built to hold up in the real world — not just look the part on paper.
Waterproofing
A continuous butyl layer that seals laps, seams and penetrations — solving the leak at the source.
High reflectance
A reflective aluminium face that turns away solar radiation, tested to ≥0.80 reflectance.
Anti-corrosion
An anti-corrosion coated surface that resists rust, acid rain and UV attack.
One roof. All New Zealand conditions.
Heavy rain, strong wind and coastal salt — ACC Weathering Membrane is engineered to stay watertight and keep your building protected.
See how it worksFind an installer. Or offer it to your clients.
ACC Weathering Membrane is supplied through roofing and waterproofing contractors nationwide.
For building owners
Interested in ACC for your building? We'll point you to a roofing or waterproofing contractor who can supply and install it.
Find an installerFor roofing contractors
Offer your clients a better roof-refurbishment option. Ask us about supply and becoming an ACC installer.
For contractorsHelp for ageing metal roofs.
Practical guidance on when to repair, refurbish or replace — so you can make an informed decision.
7 signs your metal roof needs refurbishment
Spot the early warning signs before they become expensive.
Read the guideWhy refurbish instead of replace?
Restore performance at a lower cost and far less disruption.
Read the guideHow the system is installed
The engineered steps to a continuous watertight barrier.
See installationRoof refurbishment, answered.
Can ACC go over my existing roof?
Yes. ACC Weathering Membrane is applied directly over the existing metal or concrete roof to restore waterproofing and corrosion protection — without stripping the old roof or replacing it.
Is it the same as repainting or re-coating my roof?
No. A coating is a thin surface treatment that typically needs redoing every few years. ACC is a multi-layer membrane with a continuous self-adhesive butyl layer that seals and protects the roof, not just its surface.
What roofs is ACC suited to?
Ageing but structurally sound metal and concrete roofs — typically on factories, warehouses, logistics facilities and similar commercial and industrial buildings.
Who installs it?
ACC is supplied through roofing and waterproofing contractors nationwide. Ask us and we'll point you to a contractor, or if you're a contractor yourself, ask us about supply.
How disruptive is it compared with a full roof replacement?
Because it's applied over the existing roof rather than replacing it, installation is far quicker and less disruptive — less downtime and less material going to waste.