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The 72.5 mm Kingspan Kooltherm K118 Insulated Plasterboard 2400 x 1200 mm (31.68 m²) is a premium performance internal insulation board combining rigid thermoset phenolic insulation with a bonded gypsum-based plasterboard face for drylining and vapour control in one solution. Its low thermal conductivity delivers excellent thermal resistance in a slim profile, helping to achieve building regulation U-values with minimal loss of internal space. Suited for use on solid masonry, brickwork or timber frame walls, the board is suitable for mechanically fixed or adhesive bonded drylining applications and offers a ready-to-finish surface that simplifies installation while improving internal comfort and energy efficiency.