112.5mm PIR Insulated Plasterboard 2400mm x 1200mm

Insulated plasterboard, measuring 112.5mm in overall thickness for use on internal walls and ceilings.It combines a rigid polyisocyanurate (PIR) insulation core with a 12.5mm tapered-edge plasterboard lining. This dual-purpose construction enhances thermal performance while providing a surface ready for direct decoration.Faced with foil, the PIR layer improves insulation and acts as a vapour control barrier, reducing heat loss and regulating moisture within the building fabric.The bonded plasterboard removes the need for a separate lining, saving time on site and delivering a clean, professional finish.At 112.5mm thick (100mm PIR plus 12.5mm plasterboard), the thickest option within the range, this board is designed for situations where very high insulation values are needed on internal walls. It is typically used in new-build housing and extensions where wall thickness can be planned in from the outset, allowing designers to achieve stringent U-values without layering multiple products.