Kooltherm® K8 Cavity Board

Kingspan Kooltherm® K8 Cavity Board is a premium performance insulation solution designed specifically for masonry cavity wall applications. With a fibre-free rigid thermoset phenolic core, Kooltherm® K8 delivers exceptional thermal efficiency in a slim profile—making it ideal for space-constrained builds and high-performance energy designs.

This lightweight board is easy to handle and install, while its low thermal conductivity (as low as 0.020 W/m·K) significantly reduces heat loss through external walls. Fully compliant with NCC standards and CodeMark™ certified, Kooltherm® K8 is the trusted choice for residential, commercial, and industrial projects aiming to meet stringent energy targets without compromising wall thickness or structural integrity.