Kooltherm K5 External Wall Board


Premium performance external wall insulation

Kingspan Kooltherm K5 External Wall Board is an external insulation for masonry walls.

A premium performance insulation with a fibre-free rigid thermoset phenolic core, it is suitable for use behind traditional and lightweight polymer modified renders and dry cladding systems.

Depending on the insulation thickness, Kingspan Kooltherm K5 External Wall Board provides a thermal conductivity between 0.020 W/m·K and 0.023 W/mK.


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Kooltherm K5 External Wall Board

Product information

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Thermal conductivity  (thickness of insulation)  0.023 W/mK (15 - 24 mm)
0.021 W/mK (25 - 44 mm)
0.020 W/mK (≥ 45 mm)
Facings Glass tissue
Core Premium performance rigid thermoset phenolic insulation manufactured with a blowing agent that has zero Ozone Depletion Potential (ODP) and low Global Warming Potential (GWP)
Board size 1.2 x 0.6 metres
Weight Approx 4.12 kg/m2 at a thickness of 100 mm
Green Guide Rating Kingspan Kooltherm K5 External Wall Board achieves a Green Guide Rating of A+
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, Kooltherm K5 External Wall Board is manufactured at one site and offers the following sustainability performance.
Responsible sourcing

Kingspan Kooltherm K5 External Wall Board produced at Kingspan Insulation’s Pembridge manufacturing facility is certified to BES 6001 (Framework Standard for the Responsible Sourcing of Construction Products) ‘Excellent’.

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