Kooltherm Cavity Closer


Premium performance insulated cavity closer

Kingspan Kooltherm Cavity Closer is a uPVC extrusion with a premium performance fibre-free rigid thermoset phenolic core, for use in England and Wales only.

It provides a simple and efficient method of closing cavities around openings in masonry cavity walls, and has a thermal conductivity of 0.021 W/mK.

Our product brochures include construction details, handling advice and installation guidance.

Kooltherm Cavity Closer and Kooltherm Cavity Closer PLUS

Product information

Product details
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Thermal conductivity  0.021 W/mK
Sheathing uPVC extrusion
Core Premium performance rigid thermoset phenolic insulant manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and a low Global Warming Potential (GWP)
Length 2.4m
Available widths 50, 75, 100, 105, 110, 115, 120, 125, 130, 135, 140, 145 and 150 mm
Note that sections can be joined together to suit cavity widths up to 300 mm
Planet Passionate
Through our new Planet Passionate 10-year groupwide sustainability programme, we aim to make significant advances in the sustainability of our business and of our products.

Today, Kingspan Kooltherm Cavity Closer is manufactured at one site and offers the following sustainability performance.
Responsible sourcing

Kingspan Kooltherm Cavity Closer produced at Kingspan Insulation’s Selby, North Yorkshire manufacturing facility is certified to BES 6001 (Framework Standard for the Responsible Sourcing of Construction Products) ‘Excellent’.

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