Protected roof in hot to moderate regions Add bookmark Solution main 1 Necessary products for this solution Biplas PL 4 mm APP modified bituminous membrane - Plain Geotextile white PET Nonwoven geotextile made of polyester weberep 331 TX Non shrink thixotropic repair mortar with fiber weber jointseal PU One component polyurethane sealant webercol floor Thick adhesive mortar weberdry prime WB Cold applied bitumen coating Biflex PL SBS modified highly flexible bituminous membrane with a plain surface.