Kingspan Kooltherm K107


Premium performance rigid Phenolic pitched roof board

Replaced Kingspan Kooltherm K7.

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

Used for insulating pitched roofs at rafter level, between ceiling joists, cold pitched and flat roofs.

Premium performance rigid thermoset fibre-free phenolic insulant.

Unaffected by air infiltration. Resistant to the passage of water vapour.

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 thickness: 25mm, 40mm, 50mm, 60mm, 70mm, 75mm, 80mm, 100mm and 120mm.

The following thicknesses are manufactured to order: 90mm, 110mm, 130mm, 140mm and 150mm; these may carry minimum order levels.

Product options


Availability Indicators

Kingspan Kooltherm K107 is sent out from depots nationwide and is subject to the Local Depot Delivery minimum order levels and delivery charge thresholds.

Limited stock of the most popular boards sizes may be held at some of our larger depots, and thus, available on shorter lead times than the availability rating suggests.

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 may vary.

  • Generally 1 to 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

Delivery charges will be calculated at check-out. Please visit our Ordering From Us page for further details on minimum order levels and delivery charges. If you have any queries, please do not hesitate to contact me via our Contact Form or on 01903 899 898.

Product Application

Pitched roof insulating board

Kingspans premium performance lower-lambda value phenolic foam board, Kooltherm K107, is suitable for use in above, between or below rafter level applications as well as dwarf walls and loft floors.

Product Make-up

Core: Kingspan Kooltherm K107 Pitched Roof Board is a premium performance fibre-free rigid thermoset phenolic insulant.

Facings: 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

Thickness25mm to 150mm

Product Performance

Thermal Conductivity0.019 W/mK 
Compressive Strength100 kPa at 10% compressionBS EN 826:2013
Nominal Density35 kg/m³ 

Product Variants

ProductThicknessThermal Resistancekg/m²
Kingspan Kooltherm K107 25mm25mm1.30 m²K/W1.24 kg/m²
Kingspan Kooltherm K107 40mm40mm2.10 m²K/W1.76 kg/m²
Kingspan Kooltherm K107 50mm50mm2.60 m²K/W2.11 kg/m²
Kingspan Kooltherm K107 60mm60mm3.15 m²K/W2.46 kg/m²
Kingspan Kooltherm K107 70mm70mm3.65 m²K/W2.81 kg/m²
Kingspan Kooltherm K107 75mm75mm3.90 m²K/W2.99 kg/m²
Kingspan Kooltherm K107 80mm80mm4.20 m²K/W3.16 kg/m²
Kingspan Kooltherm K107 90mm90mm4.70 m²K/W3.51 kg/m²
Kingspan Kooltherm K107 100mm100mm5.25 m²K/W3.86 kg/m²
Kingspan Kooltherm K107 110mm110mm5.75 m²K/W4.21 kg/m²
Kingspan Kooltherm K107 120mm120mm6.30 m²K/W4.56 kg/m²
Kingspan Kooltherm K107 130mm130mm6.80 m²K/W4.91 kg/m²
Kingspan Kooltherm K107 140mm140mm7.35 m²K/W5.26 kg/m²
Kingspan Kooltherm K107 150mm150mm7.85 m²K/W5.61 kg/m²

While we have provided Thermal Resistance values for all thicknesses on the Kingspan Kooltherm K107 datasheet, some thicknesses may not be readily available.

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