Kingspan Kooltherm K3

Superior performance floor insulation that offers thermal conductivities as low as 0.020 W/mK

What are the benefits of K3 Floor Insulation?
  • Rigid thermoset phenolic insulation for solid concrete and suspended ground floors
  • Can reduce the cost of related items – soil removal, service connections
  • Unaffected by air infiltration
  •  Resistant to the passage of water vapour
  •  Easy to handle and install
  •  K3 underfloor insulation is 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 K3 Floorboard

Product information

Product Details
Product Literature


Thermal conductivity (insulant thickness) 0.021 W/m.K ( 25–44 mm)
0.020 W/m.K ( ≥ 45 mm)
Compressive strength at 10% compression 120 kPa
Facings Composite foil
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 2.4 m

How can we help you?

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Do you need help or advice on a project?

Contact our experienced technical services department today.

Get in touch

Kingspan Insulation Ltd.

Bree Industrial Estate


Co. Monaghan

A75 X966

Tel: +353 (0) 42 979 5000