Wall Insulation

Internal wall insulation materials for lining solid and existing walls from the inside, plus boards and batts for cavity, timber-frame and party walls, at trade prices shown ex VAT. For internal wall insulation, insulated plasterboard such as Kingspan K118 and Celotex PL4000 (now Sopratherm) is the usual one-fix lining; the range also includes full- and partial-fill cavity boards (Recticel Eurowall, Kingspan Thermawall, Kooltherm K106/K108), cavity batts, timber-frame boards and rolls (K112, URSA Frametec) and party wall roll.

For cavity wall insulation, choose partial fill cavity insulation boards, which leave a clear air gap, or full fill cavity insulation such as cavity batts and Recticel Eurowall+ boards. For solid wall insulation, insulated plasterboard on the inside face is the quickest route, while timber frame insulation fits between the studs as boards or rolls.

Shop thermal insulated plasterboard, or read how to fit insulated plasterboard to a solid wall, how to install insulated plasterboard and what thickness of insulation for walls. Check a PIR build-up with the PIR U-value calculator or work out quantities with the insulation calculator. Shop wall boards by brand: Celotex wall insulation, Kingspan wall insulation and Recticel wall insulation.

Not sure what goes where? See our where to insulate guide for lofts, roofs, walls, floors, partitions and ceilings. Prices are ex VAT, with a £400 ex VAT minimum. Delivery is free in England, and £40 + VAT to mainland Wales and mainland Scotland.