Cavity walls stay slim with lower lambda Kooltherm

Kingspan kooltherm

With pressure mounting to be building nearly zero-energy buildings within the next few years, Kingspan Insulation is proud to announce the latest development in ultra-low lambda products to help meet those targets, without having to increase cavity wall sizes. Offering a thermal conductivity of just 0.018 W/m.K, new Kingspan Kooltherm K106 and K108 Cavity Board provide a level of performance that is unrivalled in the world of rigid thermoset insulation materials.


Apart from the fact that low U-values can be achieved with a thinner product, a specially developed facing also allows Kooltherm K106 Cavity Board to be installed with a mere 10 mm air gap, instead of the 50 mm that is required in a standard partial fill cavity wall construction. The water-tight, vapour-open polypropylene fleece outer facing protects against moisture penetration, whilst the lowerlambda phenolic core allows a U-value of 0.17 W/m2.K to be achieved with an overall cavity of just 100 mm in a standard masonry construction. All of this means that you can now meet or exceed building envelope requirements, without losing out on living space, or moving away from preferred cavity sizes.


Both Kooltherm K106 and K108 Cavity Board are BBA certified, and feature Kingspan’s market leading, fibre-free, rigid thermoset phenolic insulation core. Manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and very low Global Warming Potential (GWP), the insulation boards are non-deleterious, easy to handle and install, and are unaffected by air infiltration.


All Kooltherm, Therma and KoolDuct insulation products and cavity closers manufactured at Kingspan Insulation’s facilities in Pembridge and Selby are certified to BES 6001 (Framework Standard for the Responsible Sourcing of Construction Products) ‘Excellent’.



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