52.5mm Celotex PL4040 Insulated Plasterboard 2400mm x 1200mm

Insulated plasterboard, measuring 52.5mm in overall thickness for use on internal walls and ceilings.Manufactured as part of the PL4000 range, it combines a rigid polyisocyanurate (PIR) insulation core with a 12.5mm tapered-edge plasterboard lining. This dual-purpose construction improves thermal performance while providing a surface that is ready for direct decoration.The PIR layer is faced with foil to enhance insulation and act as a vapour control barrier, reducing heat loss and helping to manage moisture within the building fabric. The bonded plasterboard eliminates the need for a separate lining, saving time on site and ensuring a neat internal finish.At 52.5mm thick (40mm PIR plus 12.5mm plasterboard), the board provides an effective upgrade in insulation performance, making it suitable for projects that need stronger thermal efficiency while still keeping internal build-ups relatively slim.