Centech PU forms the basis of our 10, 15, 20 and 25 cold applied liquid waterproofing systems. When reinforced with Centech GFM glass fibre mat, Centech PU cures to form an incredibly tough polyurethane membrane designed to be used on a wide range of roofs for both existing and new build work. Centech PU can be used in waterproofing only systems or as part of a built up warm roof.