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Xtratherm PIR foam is a polyisocyanate based insulation foam for use in solid insulation products. It is not sold as a foam alone, but is faced with a range of facers to create insulation boards, to be sold under the product range names of Xtratherm Thin-R, Thin-R Plus and Xtroliner. These are insulation products for use in a wide range of building applications including walling, cavity walls, roofing, framing, and solid and suspended flooring. The Xtratherm PIR insulation boards are made in a range of foam thicknesses (25 -160mm) and using various combinations of different facers, to make the products listed in the table below: Product range Product Thin-R Pitched Roof (XT / PR) Thin-R Flat Roof (FR / BGM) Thin-R Cavity Wall (XT / CW) Thin-R Plus Cavity Wall Plus (XT / CWP) Thin-R Underfloor (XT / UF) Thin-R Plus Cavity Therm (CT / PIR) Thin-R Timber Frame (XT / TF) Thin-R Plus Cavity Therm Flex (CT/Flex) Thin-R Hyfloor (XT / HYF) Xtroliner Cavity Wall (XO / CW) Thin-R Sarking (XT / SK) Xtroliner Floor (XO / UF) Thin-R Thermal Liner (XT / TL) Xtroliner Framing Board (XO / FB) Thin-R Flat Roof (FR / ALU) Xtroliner Pitched Roof (XO / PR) Thin-R Flat Roof (FR / MG) Xtroliner Soffit (XO / ST)