Builders Merchant Direct has an extensive range of PIR insulation products with top-performing thermal conductive properties for use in floors, roofs and walls. The low thermal conductivity of our PIR insulation boards maximises the performance of their insulation properties and enables low U-values to be achieved. All Builders Merchant Direct PIR insulation boards are available in a range of sizes and are purposely designed to guarantee compatibility with other essential products within a build. We supply the UK's leading brands, Celotex, Iko, Kingspan, Recticel and Xtratherm.