Kingspan Kooltherm K118 Insulated Plasterboard - 25mm + 12.5mm Plasterboard (Pack Of 21)

Kingspan Kooltherm K118 is a premium performance insulated plasterboard designed for both mechanically fixed and adhesively bonded drylining systems. It combines a high-efficiency phenolic insulation core with a tapered edge gypsum plasterboard and an integral vapour control layer—offering insulation, drylining, and vapour control in a single, easy-to-install board.

Perfect for upgrading the thermal performance of solid walls, brickwork, stonework (subject to moisture assessment), timber framing, and pitched roofs, Kooltherm K118 helps to improve energy efficiency while saving valuable internal space.

Key Features

• All-in-one solution: Combines insulation, drylining, and vapour control in one board.
• Exceptional thermal performance: Thermal conductivity (λ) of 0.019 W/m·K across all thicknesses & Manufactured from rigid thermoset phenolic insulation, one of the most efficient insulation materials available.
• Front facing: Tapered edge gypsum-based plasterboard for a smooth finish that readily accepts plaster skim or dry-jointing.
• Reverse facing: Low-emissivity composite foil, autohesively bonded to the insulation core for enhanced vapour control.
• Fire performance: Overall board: Euroclass B-s1,d0 (EN 13501-1:2018)
• Plasterboard component: Euroclass A2-s1,d0
• Lightweight and easy to handle: Approximate weight of 12.41 kg/m² at 50 mm thickness (excluding plasterboard).