Description
Kingspan Kooltherm K8 40mm Cavity Board provides a high-performance insulation solution for masonry cavity wall construction. The board combines a fibre-free, closed-cell thermoset phenolic insulation core with reflective composite foil facings on both sides.
The reflective foil facings help improve the thermal resistance of the cavity. Furthermore, the 40mm profile provides increased insulation thickness and a declared R-value of R1.75.
Kooltherm K8 helps maintain a clear cavity while providing effective thermal insulation. As a result, it can help improve the overall thermal performance of masonry cavity wall systems.
Moreover, the board suits a range of residential and commercial masonry wall applications. Kingspan manufactures K8 in Australia, while CodeMark certification supports its use for relevant NCC compliance requirements.
Key Features
- 40mm nominal thickness
- Declared product R-value of R1.75
- 1200mm x 514mm board size
- Approximately 0.61m² coverage per board
- Fibre-free, rigid thermoset phenolic insulation core
- Reflective composite foil facings
- Suitable for masonry cavity wall applications
- Helps improve cavity thermal performance
- Helps maintain a clear cavity
- CodeMark-certified for relevant NCC compliance requirements
- Manufactured in Australia
Why Choose 40mm Kingspan K8?
The 40mm K8 board provides an effective insulation solution when you need greater thermal performance within a masonry cavity wall. In comparison with thinner insulation options, its increased thickness provides a declared R-value of R1.75.
Furthermore, the rigid phenolic core delivers strong thermal performance for its thickness. The reflective foil facings also contribute to the board’s thermal performance and help maintain the efficiency of the cavity.
In addition, the 1200mm x 514mm board size provides approximately 0.61m² of coverage per board. Therefore, you can easily calculate the number of boards required for your project.
Technical Information
Thickness: 40mm
Dimensions: 1200mm x 514mm
Coverage: 0.61m² per board
Declared R-value: R1.75
Declared thermal conductivity: 0.023 W/m·K at 23°C for 25–44mm insulation thickness
Foil face emittance: E0.06
Always check the latest Kingspan technical documentation and installation requirements before specifying or installing the product.
See the full Kingspan range here.
📞 Call us on 03 8339 7111 to confirm stock or ask about lead times
Pickup location: 56 Yellowbox Drive, Craigieburn VIC
🕒 Business hours: Mon–Thurs 6:30am–4:00pm | Fri 6:30am–3:00pm
🚚 Delivery is also available across Melbourne during business hours
