Kingspan Insulation Kooltherm K112 phenolic wall framing board Celotex Insulation

Kingspan Kooltherm K112

Premium performance rigid Phenolic wall framing insulation board.

Replaces Kingspan Kooltherm K12.

New lower Lambda Value (Thermal Conductivity) 0.019 W/mK... The most thermally efficient commonly used insulating board.

Suitable for use with timber frame and steel frame wall construction.

Can be used between studs or as an insulating sheathing.

Premium performance rigid thermoset fibre-free phenolic insulant.

Thicknesses and Availability:

Available in most popular thicknesses from the manufacturer; short lead-times apply as we may need to get the products in from Kingspan before delivering to site.

This Kooltherm Range includes the following readily available product thicknesses 25mm, 40mm, 50mm, 60mm, 70mm, 75mm and 100mm.

The following thicknesses are manufactured to order and may have minimum order requirements: 80mm, 120mm, 130mm and 140mm.

Product Information

General information about Kingspan Kooltherm K112

Product Application

Timber and steel frame insulating board

Kingspans premium performance 'lower-lambda' value phenolic foam board, Kooltherm K112, is suitable for use in timber and steel frame wall lining applications.

Product Make-up


The core of Kingspan Kooltherm K112 Framing Board is a premium performance rigid thermoset modified resin insulant.


Faced on both sides with a low emissivity composite foil, autohesively bonded to the insulation core during manufacture. This reflective, low emissivity surface improves the thermal resistance of any unventilated cavity adjacent to the board.

Product Properties

Thickness 25mm to 140mm
Board Length 2.4m
Board Width 1.2m
Board Edge Square

Product Prices

Buy Kingspan Kooltherm K112

Product ex-VAT inc-VAT
Kingspan Kooltherm K112 50mm, 6 x 1.2x2.4m = 17.28m² £407.86 £489.43
Kingspan Kooltherm K112 60mm, 5 x 1.2x2.4m = 14.4m² £404.97 £485.96
Kingspan Kooltherm K112 70mm, 4 x 1.2x2.4m = 11.52m² £376.67 £452.00
Kingspan Kooltherm K112 80mm, 4 x 1.2x2.4m = 11.52m² £427.85 £513.42
Kingspan Kooltherm K112 100mm, 3 x 1.2x2.4m = 8.64m² £389.34 £467.20
Aluminium Foil Tape 100mm x 50m = 50lm £10.17 £12.20

Limited stock of the most popular boards sizes may be held at some of our larger depots.

Where products need to be brought in from Kingspan, please allow approx. 1 week for delivery on stocked items and up to 3 weeks on made to order thicknesses. While Kingspan keep the majority of the popular thicknesses in stock, less popular thicknesses may carry a minimum order level.

Kingspan reserves the right to change stocked products - while we will do all we can to keep on top of changes, availability and lead times my vary.

  • Generally 1 or 3 working days for delivery
  • Generally 1 to 5 working days for delivery
  • Generally 5 to 10 working days for delivery
  • Special request or made to order item, allow extended lead times. Minimum order levels may apply.
  • Please call to check availability and approximate lead times

Product availability depends upon stock levels at closest depot and delivery logistics to geographic locations

Product Performance and Guides

Product Performance, Manufacturer Downloads, and Installation Guides

Product Performance

Thermal Conductivity 0.019 W/mK
Compressive Strength 100 kPa at 10% compression BS EN 826:2013
Nominal Density 35 kg/m³
Product Thickness Thermal Resistance kg/m²
Kingspan K112 25mm 25mm 1.32 m²K/W 1.24 kg/m²
Kingspan K112 40mm 40mm 2.11 m²K/W 1.76 kg/m²
Kingspan K112 50mm 50mm 2.63 m²K/W 2.11 kg/m²
Kingspan K112 60mm 60mm 3.16 m²K/W 2.46 kg/m²
Kingspan K112 70mm 70mm 3.68 m²K/W 2.81 kg/m²
Kingspan K112 75mm 75mm 3.95 m²K/W 2.99 kg/m²
Kingspan K112 80mm 80mm 4.21 m²K/W 3.16 kg/m²
Kingspan K112 90mm 90mm 4.74 m²K/W 3.51 kg/m²
Kingspan K112 100mm 100mm 5.26 m²K/W 3.86 kg/m²
Kingspan K112 110mm 110mm 5.79 m²K/W 4.21 kg/m²
Kingspan K112 120mm 120mm 6.32 m²K/W 4.56 kg/m²

Product Certificates

Please visit the Kingspan website for product certificates.

Kingspan Videos

How to insulate a timber frame wall