IMPERMAX/ST/QC/TIXO and IMPERMAX A are liquid applied roof waterproofing membranes based on pure polyurethane, manufactured by the company KRYPTON CHEMICAL, S.L. All consists of a polyurethane resin, liquid-applied, mono-component, elastomeric with or without internal protection layer. IMPERMAX/ST/QC/TIXO are moisture cured. IMPERMAX A is moisture triggered cured. Once polymerized they conform an elastic lining, in form of a layer completely bonded to different supports (steel and other types of metals, concrete, mortar, ceramic, timber, polyurethane foam and other waterproofing membranes like PVC, EPDM and bituminous). Depending on support condition, other type of primer may be advisable.