Kingspan Thermaroof TR27 PIR Flat Roof Insulation Board is designed for flat roof applications, offering high thermal performance and durability. Each board measures 1200 x 1200 x 100mm and comes in a convenient pack of four sheets for efficient coverage. Manufactured from rigid polyisocyanurate (PIR) insulation, this Kingspan insulation board is suitable for use under mechanically fixed single-ply membranes and other waterproofing systems. The flat roof insulation provides excellent compressive strength, moisture resistance, and easy handling to streamline installation on commercial and residential projects.