Thermal Insulated Plasterboard

Insulated plasterboard for dry-lining walls and ceilings in one fix – Kingspan Kooltherm K118 phenolic and Celotex PL4000 PIR laminates – at trade prices, delivered to England.

K118 or PL4000?

• Kingspan Kooltherm K118: phenolic insulation bonded to 12.5mm tapered-edge plasterboard, 2400 × 1200mm, 37.5mm to 82.5mm total thickness. Phenolic (λ 0.019 W/mK) gives the best performance for the least room lost.
• Celotex PL4000 (now Sopratherm PL4000): PIR insulation bonded to 12.5mm tapered-edge plasterboard, 2400 × 1200mm, 37.5mm to 77.5mm total thickness, λ 0.022 W/mK, sold per sheet.

The quoted thickness is insulation plus 12.5mm board (e.g. 62.5mm = 50mm insulation + 12.5mm plasterboard). Boards can be fixed with dabs of adhesive to masonry or screwed to battens or metal furrings; use mechanical fixings as the manufacturer specifies. For standard boards see plasterboard, and for adhesive see drylining supplies.

Delivery: prices are ex VAT. Delivered in England only. We do not deliver to Northern Ireland or the Scottish islands. Kingspan: free delivery, £400 ex VAT minimum order. Celotex: £400 ex VAT minimum order, free delivery. Call 03330 908479 for help.

Celotex PL4000 is a PIR insulated plasterboard. Kingspan K118 is a phenolic insulated plasterboard, which reaches a given U-value with a slightly thinner board. Both come as 2400 × 1200mm sheets for lining walls and ceilings in one fix.

Calculate how many plasterboards you need

Related guides

• Kingspan K118 Insulated Plasterboard: The All-in-One Insulation Solution
• Understanding Thermal Bridging: Your Complete Guide
• Why Insulation Board Plasterboard Works for Modern Buildings
• How to Fit Insulated Plasterboard to a Solid Wall