Transpower Roof
Sealing a flat roof over critical electrical infrastructure.
A roof where water sits, and failure isn't an option
Flat roofs on substation buildings drain slowly. Water pools in the low spots and can still be sitting there days after the last rainfall, working away at the membrane, the laps and the flashing details.
Directly underneath sits switchgear and control equipment where a single leak is far more expensive than the roof itself. Most roof coatings are never designed to stay submerged — under continuous immersion they soften, blister and let go at exactly the point where water is standing.
Double Eagle was specified for this roof.
Double Eagle is a high-performance waterproofing membrane built to withstand permanent ponding water. Applied over the prepared roof it forms one seamless, fully bonded barrier across the field, laps and upstands — and it keeps protecting the building even when water stays on the surface for weeks.
Why an ordinary roof coating wouldn't last
- A low-pitch roof that holds water long after the rain stops
- Weathered, stained membrane with ageing laps and flashing details
- Critical switchgear and electrical equipment directly below
Double Eagle waterproofing membrane
- Double Eagle membrane rated for permanently ponded water
- Seamless, fully bonded coverage across laps, upstands and parapets
- A bright, reflective finish that keeps performing while water sits on it
From a tired, stained membrane to a sealed roof
Products used on this project
The exact coating systems specified here — available for commercial, contractor and experienced DIY projects.
Specify for the water that actually sits there
Ponding water is where most roof coatings fail. We work with contractors, engineers and asset owners to specify a system that suits the real drainage, substrate and exposure of the roof in front of them — not a best case.
Other waterproofing projects
More products and projects that protect roofs from water and corrosion.
EagleEagle DoubleCoat Liquid Waterproofing Aluminium
Built for water that never drains away.
A liquid elastomeric waterproofing membrane reinforced with microfibres and a high aluminium content, for waterproofing and continuous ponding water — i.e. internal gutters. Eagle DoubleCoat provides waterproofing and solar reflection on most types of roof surface including galvanised steel, iron, zinc, asbestos, cement, roofing felt, asphalt and bituminous roof coatings.
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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.
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ProjectNadi International Airport
A tropical international airport metres from the ocean, protected with Noxyde — proven where failure isn't an option.
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ProjectTitirangi Asbestos Roof
A weathered hexagonal asbestos-cement roof fully encapsulated with Rust-Oleum Noxyde® — instead of costly removal and replacement.
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