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Nuratherm Warm Roof System

The Nuratherm system puts the insulation where it should be, above the substrate, to completely enclose the roof area with a highly efficient insulation blanket. With 30–35% of heat lost through the roof of an uninsulated house, Nuratherm insulated roof systems optimises energy efficiency in flat roof properties.

Using Enertherm PIR across the entire flat roof surface, the R value of the system is higher than the R value of the PIR. In comparison, energy is wasted using lofted insulation between the rafters as R-value of the system is actually lower than the insulation R value due to thermal bridging.

The system can be installed on plywood, concrete or metal substrates, on new or existing buildings and on flat roofs regardless of their slope. By choosing to use the Dimond NPM900 metal tray as a substrate the entire roof system may be installed for less than a traditional flat roof system.

Key Features
  • Optimises energy efficiency
  • Improves insulation with no thermal breaks
  • Ventilation of ceiling void not required
  • Can be retrofitted on existing buildings
  • 20 year product warranty
  • BRANZ Appraised system
  • Quieter than traditional systems
  • Very high compressive strength

Product Combinations:

  • Nuraply 3PM
  • Nuraply 3PM Pure White
  • Nuraply 3P
  • Enertherm PIR Insulation — Using Enertherm PIR across the entire flat roof surface, the R value of the system is higher than the R value of the PIR
  • Dimond NPM 900 — By choosing to use the Dimond NPM900 metal tray as a substrate the entire roof system may be installed for less than a traditional flat roof system
Membrane Roofing
Insulation Roofs
Scope of Use

The Nuraply Nuratherm System has been appraised by BRANZ for use as an insulating roof on buildings within the following scope:

  • the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regards to building height and maximum floor plan areas; and,
  • on limited access flat roofs with concrete, timber or steel structural decks subject to specific structural design; and,
  • with roofs constructed to drain water to gutters and drainage outlets complying with the NZBC; and,
  • with roofs constructed to suitable falls (Refer Paragraph 15.3 and 15.4); and,
  • with no integral roof gardens; and,
  • situated in NZ3 3604 Wind Zones, up to, and including 'Extra High'.

The Nuraply Nuratherm System has also been appraised for durability and thermal performance as an insulated roofing system on buildings that are the subject of specific design with no building height restriction. Building designers are responsible for the building design and for the incorporation of the Nuraply Nuratherm System into their design in accordance with the declared properties and instructions of Nuralite Waterproofing Ltd.

NZS 3604 Wind Zone Extra High suitable
Extra High Wind Zone
Statement of Building Code Compliance

In the opinion of BRANZ , the Nuraply Nuratherm System, if designed, and used, installed and maintained in accordance with with the statements and conditions of Appraisal No.732 (2012), will meet the following provisions of the NZBC:

  • Clause B2 Durability: Performance B2.3.1(b), 15 years. Nuraply Nuratherm System meet this requirement
  • Clause E2 External Moisture: Performance E2.3.1 and 2.3.2. Nuraply Nuratherm System meet these requirements
  • Clause F2 Hazardous Building Materials: Performance F2.3.1. Nuraply Nuratherm System meet this requirement and will not present a hazard to people
  • Clause H1 Energy Efficiency: Performance H1.3.1(a). The Nuraply Nuratherm System will contribute to meeting this requirement

Nuraply Nuratherm System is appraised as an Alternative Solution in terms of New Zealand Building Code compliance.

In-Service History

As a New Zealand owned and operated company, Nuralite has provided membrane roofing, decking and tanking solutions within the architectural industry for over 40 years.

Other Performance Attributes
  • 20 year product warranty
  • Core density: 32 kg/m³
  • Compression strength at 10% deformation: ≥120 kPa (EN 13165)
  • Performance under the influence of an equally distributed load: class C
  • d-value (EN 13165 – declared value) : 0,023 W/Mk
  • Tensile strength perpendicular to surface: > 80 kPa (EN 1607)
  • Facing: aluminium tri-laminated foil
  • Fire reaction: Class E according to EN 13501 part 1
B2 Durability compliant
E2 External Moisture compliant
External Moisture
F2 Hazardous Building Materials compliant
Hazardous Building Materials
H1 Energy Efficiency compliant
Energy Efficiency
BRANZ Appraised
BRANZ Appraised
Acoustic Test Results
Material Safety Data Sheet
Nuratherm Warm Roof Brochure
BRANZ Appraisal 732

No.732 [2019]

Installation Checklist
Additional Information

Membrane waterproofing is not hard when combined with Nuralite's range of system solutions and experienced team of technical experts.

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