Try our new online learning today! Find out more...

Overlay existing membrane or metal tray roofs with a robust membrane or warm roof solution. Providing an option to refresh tired roofs on their existing substrates.

CodeMark Certificate View Technical Documents

Why would you overlay an existing roof?

Why would you overlay an existing roof?

Re-birthing a roof is a cost effective way to overlay an existing substrate without removing it entirely.

prev next
Why chose PIR to go over an existing roof?

Why chose PIR to go over an existing roof?

Enertherm boards are used over top of an existing substrate and can be tapered to create the right fall for the membrane roof.

prev next
Why recover an existing Metal Tray roof?

Why recover an existing Metal Tray roof?

An existing roof provides protection for interior and rooftop workers, meaning internal operations can continue. Landfill waste is also reduced, whilst insulation value is increased.

prev next
How a remedial job can save your time and money?

How a remedial job can save your time and money?

By overlaying you can directly fix over an existing substrate offering protection immediately if there are any defects or damaged areas.

prev next
What substrates can you overlay for a Nuratherm Warm roof?

What substrates can you overlay for a Nuratherm Warm roof?

You can overlay our Nuratherm Warm Roof system on existing metal tray, concrete or old membrane roof.

prev next
Why would you use Nuraboard?

Why would you use Nuraboard?

Nuraboard can be used over top of damaged membranes to provide protection and a base to overlay Enertherm or Nuraply.

prev next
What substrates can you overlay for a Nuraply 3PM roof?

What substrates can you overlay for a Nuraply 3PM roof?

You can overlay existing concrete or old membranes roofs with our two layer torch on system.

prev next

System Benefits

  • Quick and efficient to install.
  • Extends life of existing membrane/substrate.
  • Minimal disruption to living space below.
  • Increased R-value and energy efficiency.
  • Repair roof without removal.
  • 20-year product warranty.
  • BRANZ Appraised & CodeMark Certified system.
  • Increased fall with tapered Warm roof.
Enertherm Overlay
Scott's Hut - Antarctica

Scott's Hut - Antarctica

“The waterproofing is critical to the long term survival of the building. The heritage architects required a product and detailing which mimicked the original. ”

Read project

125 Queen St metal tray pre overlay.

125 Queen St metal tray pre overlay.

Showing the existing metal tray being overlaid with two layer torch on.

Showing the existing metal tray being overlaid with two layer torch on.

Finished Nuraply 3PM membrane gives new life to old roof.

Finished Nuraply 3PM membrane gives new life to old roof.

The mineral chip membrane extends the life of the roof.

The mineral chip membrane extends the life of the roof.

Warm Roof overlay on Life Church in Mt Eden.

Warm Roof overlay on Life Church in Mt Eden.

Showing metal tray before Nuratherm Warm Roof.

Showing metal tray before Nuratherm Warm Roof.

The two layer torch system gave the building a refreshed look.

The two layer torch system gave the building a refreshed look.

Looking for Specs and CAD Details?

Find the perfect solution for your project here:

Roof
Roof

Choose a bulletproof, double layer system or a sleek single layer TPO system.

Deck
Deck

Create a floating deck using tiles or timber on a new or over an existing substrate.

Tanking
Tanking

Robust waterproofing of basement walls, foundations and under the floor slab.

What is the finished look you desire?

Review Details

Supply details

Review details

Contact Nuralite

Please contact us to discuss this project.

Our technical team are available on:

0800 NURALITE (0800 687 254)

Thermal Capability Table (R-Value)

The Nuratherm ALU PIR has a thermal conduction coefficient of 0.022 W/(m.K) 

ALU (1,200 x 1,000mm) 70mm 80mm 100mm  
R Value 3.15 3.60 4.5  
         
ALU Tapered (1,200 x 1,000mm) Slope 1/60 = 1°    
Thickness (mm) 40 - 60mm 60 - 80mm 80 - 100mm 100 - 120mm
Avg R Value 2.25 3.15 4.05 4.95
Need a Flat Roof Design Guide? Get It Now