Thermal insulation KOOLTHERM K18

phenolic foampanelrigid panel

Overview
Kooltherm K18 is an insulated plasterboard for mechanically fixed drylining, suitable for internal wall insulation (IWI). The board incorporates a rigid phenolic insulation core with thermal conductivity down to 0.021 W/m·K, enabling thinner wall constructions while maintaining thermal performance. It integrates insulation, drylining and vapour control in a single board and can be fixed to solid stonework or brickwork, with or without an existing lining.

Product Highlights

• One of the thinnest commonly used internal wall insulation (IWI) solutions, conserving internal space
• Designed for applications where external insulation is not feasible
• Combines insulation, drylining and vapour control in one board
• Can be mechanically fixed to the underside of rafters for attic conversions

Technical specifications

• Model: Kooltherm K18
• Brand: Kingspan
• Product type: Insulated plasterboard for internal wall insulation (mechanically fixed drylining)
• Core material: Rigid phenolic insulation (Kooltherm range)
• Thermal conductivity (λ): 0.021 W/m·K
• Functions: insulation, drylining and integrated vapour control
• Suitable substrates: solid stonework and brickwork (with or without existing lining)
• Common applications: internal wall insulation (IWI), attic conversions (fixed to underside of rafters)