
Kooltherm K8 Plus Cavity Board
Cavity wall insulation with a thermal conductivity as low as 0.021 W/mKAt Kingspan Insulation, we are your full spectrum insulation solutions provider, dedicated to empowering your projects with products where quality is assured.
We take pride in delivering a diverse portfolio of products that seamlessly combine advanced technologies and tested performance, which help to reduce buildings’ operational carbon. From ultra-thin vacuum insulation panels that optimise space without compromising thermal efficiency, to rigid board insulation and more traditional mineral fibre batts.
A number of our product ranges deliver market leading performance in terms of thermal conductivity, allowing specifiers and installers to meet energy performance and sustainability targets even in challenging spaces.
We are committed to the highest levels of integrity and governance. Our team of experts collaborates closely with architects, contractors, engineers, builders, and homeowners to understand their specific challenges and deliver tailored solutions that exceed expectations.
With an aged thermal conductivity of between 0.021- 0.022 W/mK, it offers the thinnest solution of any commonly available insulation to achieve desired U-values for roof, wall and floor applications.


With an aged thermal conductivity of between 0.022 - 0.027 W/mK, and a fibre-free core, it offers a slim and lightweight solution to achieve desired U-values.
Offering a thermal conductivity as low as 0.007 W/m.K and a compressive strength ≥ 150 kPa it can provide a slim solution for problem areas in roof and floor applications.


With thermal conductivity as low as 0.020 W/mK, together with A2-s1,d0 rating, it provides a slim solution for rainscreen and soffit applications.
With a A1 Euroclass rating and a thermal conductivity of 0.034 – 0.040 W/mK it is suitable for use behind rainscreen facades and in flat roofing.


With a thermal conductivity of 0.033-0.036 W/mK and a compressive strength that typically exceeds 300 kPa, it is suitable for heavy duty floor and roof applications such as green roofs and commercial, industrial or cold store flooring.
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