The Celotex XR4140 General Purpose PIR Insulation Board is a high-performance thermal insulation solution suitable for floors, walls, and roofs in residential and commercial buildings. Measuring 2400 x 1200 x 140mm, this rigid polyisocyanurate (PIR) board offers excellent thermal efficiency while maintaining a slim profile. Lightweight yet durable, the Celotex XR4140 board is easy to handle and install, making it ideal for new builds or retrofit projects. Its foil facings provide improved moisture resistance and enhanced insulation properties, supporting compliance with building regulations for energy efficiency.