Kingspan Kooltherm K118 62.5mm (50+12.5mm), 12 x 1.2×2.4m = 34.56m²

Premium performance rigid Phenolic insulated plasterboard

Replaced Kingspan Kooltherm K17 & K18.

Insulation, dry–lining and vapour control in one board.

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

Suitable for both mechanical fixing and dot & dab adhesive bonding.

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: 37.5mm, 42.5mm, 52.5mm, 57.5mm, 62.5mm and 72.5mm.

The following thicknesses are manufactured to order and may have minimum order requirements: 32.5mm, 67.5mm, 82.5mm, 87.5mm and 92.5mm

Additional information


5 to 10 working days

Product ex-VAT inc-VAT  
Kingspan Kooltherm K118 62.5mm (50+12.5mm), 12 x 1.2×2.4m = 34.56m² £900.98 £1,081.18

Availability Indicators

Kingspan Kooltherm K118 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.

While the items are priced per pallet, in some cases we can split the pallets and supply individual boards … please contact me to discuss your requirements so I can check with the relevant depot about options of splitting the pallet.

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.

Product Application

Dry-lining thermal laminate board

Kingspans premium performance lower-lambda value phenolic foam board bonded to 12.5mm plasterboard, Kooltherm K118, is suitable for use in wall applications where it is mechanically fixed to timber frames or steel wall linings as well as adhesive bonded (dot and dab) to brick, block, or concrete walls.

Product Make-up

Core: The core of Kingspan Kooltherm K118 Insulated Plasterboard is a premium performance fibre-free rigid thermoset phenolic insulant.

Facings: Faced with a 12.5mm tapered edge gypsum based plasterboard on the front facing while the hidden face is a perforated low emissivity composite foil, autohesively bonded to the insulation core during manufacture.

Product Performance

Thermal Conductivity0.019 W/mK 
Compressive Strength100 kPa at 10% compressionBS EN 826:2013
Vapour Resistance> 100 MNs/gmBS EN 12086: 1997 / I.S. EN 12086: 1998
Nominal Density35 kg/m³