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Kooltherm K7 Pitched Roof Board

Kooltherm K7 Pitched Roof Board is a rigid thermoset phenolic insulation for roof/ceiling applications. It has a fibre-free core and a highly reflective aluminium foil on both sides autohesively bonded to the insulation core during manufacture.

Kingspan Kooltherm K7 is a roof insulation board used to insulate the rafters of tiled, slated or profiled metal roofs. It is suitable for use in skillion roofs, attic floors/ceiling levels, mansard roofs and dormer windows.

Kooltherm K7 is manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP).

Key Features
  • Fibre-free rigid thermoset phenolic insulation core
  • Can be used over or under rafters as continuous insulation
  • Can be used between rafters
  • Can eliminate thermal bridging
  • Ideal for new build or refurbishment
  • Easy to handle and install
  • NZBC and AS/NZS 4859.1:2018 compliant


Product size:

  • 2400mm x 1200mm (2.88m²)

Product thickness:

  • 25mm (R1.10)
  • 30mm (R1.30)
  • 40mm (R1.75)
  • 50mm (R2.35)
  • 60mm (R2.80)
  • 70mm (R3.30)
  • 80mm (R3.75)
  • 90mm (R4.20)
  • 100mm (R4.70)
Thermal Insulation
Scope of Use
  • Suitable for timber and steel frame roof construction
  • Suitable for new build and refurbishment
  • NZBC and AS/NZS 4859.1:2018 compliant

Kooltherm K7 Pitched Roof Board is not subject to a warning or ban under section 26 of the Building Act 2004.

Limitations on Use
  • Cannot be permanently exposed to weather elements
  • Not suitable when risk of galvanic corrosion has been identified for the use with galvanised steel
  • Not a component for structural bracing
  • Not a fall arrest product
  • The requirement for a vapour control layer should be assessed by roof condensation calculation. Contact Kingspan technical services to discuss your specific project requirements
  • Maximum rafter centres is 600mm

When a combination of different insulation materials is used, condensation calculation needs to be performed on the roof build up system to evaluate the condensation risk. Contact Kingspan technical services to discuss specific project requirements.

Statement of Building Code Compliance

Kooltherm K7 Pitched Roof Board meets the performance requirements of NZBC:

  • Clause B1 Structure (B1.3.1, B1.3.2, B1.3.3(a), B1.3.4),
  • Clauses B2 Durability (B2.3.1 (a) 50 years,
  • Clause E3 Internal Moisture (contributes to E3.3.1 ),
  • Clause F2 Hazardous Building Materials (F2.3.1), and
  • Clause H1 Energy Efficiency (contributes to H1.3.1 and H1.3.2E) by testing and comparison with acceptable solutions H1/AS1 and H1/AS2 and verification methods H1/VM1 and H1/VM2


  • It is not damaged, dented or fractured
  • It is installed in accordance with installation instructions
  • It is installed by or under guidance of Licensed Building Practitioners
Other Performance Attributes
  • Thermal Conductivity (λ-value) at 15ºC as per AS/NZS 4859.1:2018
  • 0.022 W/mK (Insulant Thickness ≥ 45 mm)
  • 0.023 W/mK (Insulant Thickness 25 - 44 mm)
  • Emittance (Foil Face) E0.06
B1 Structure compliant
B2 Durability compliant
F2 Hazardous Building Materials compliant
Hazardous Building Materials
H1 Energy Efficiency compliant
Energy Efficiency
Data Sheet

KINZ-K7DS V2.0 Sep 2023

Needle Flame Test

PL1849-1 - 30/08/23

Installation and Operation

KINZ-K7IG v1.0 September

Kingspan Kooltherm Product Warranty

Issue 6 - Apr 2024

Kingspan are New Zealand’s leading provider of high-performance insulation products and complementary Thermakraft range of premium wall & roof underlay products, flashings tapes & underlay mesh.

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