Kooltherm K5 External Wall Insulation Board

German House - K5 Rendered Kopie

An external insulation for masonry walls that offers thermal conductivities as low as 0.020 W/mK

What are the benefits of Kooltherm K5 External Wall Insulation?
  • Premium performance rigid thermoset insulation for external walls
  • Suitable for use behind traditional and lightweight polymer modified renders 
  • Unaffected by air infiltration
  • Resistant to the passage of water vapour 
  • Easy to handle and install 
  • Ideal for new build and refurbishment 
  • Non−deleterious material
  • Manufactured with a blowing agent that has zero ODP and low GWP

Product brochure

Our product brochures include U-value tables, handling advice and installation guidance.

Kooltherm K5 External Wall Board

Product information

Product details
Product Literature


Thermal conductivity (insulant thickness) 0.023 W/m.K (15-24 mm)
0.021 W/m.K ( 25–44 mm)
0.020 W/m.K ( ≥ 45 mm)
Euroclass C-s2,d0
Compressive strength at 10% compression 100 kPa
Facings Glass tissue
Core Premium performance rigid thermoset modified resin insulant 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 m

How can we help you?

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Get in touch

Kingspan Insulation Ltd.

Bree Industrial Estate


Co. Monaghan

A75 X966

Tel: +353 (0) 42 979 5000