Waterproofing in aggressive soil non immersed foundations Add bookmark Solution main 1 Necessary products for this solution Biflex PL SBS modified highly flexible bituminous membrane with a plain surface. Biplas PL 4 mm APP modified bituminous membrane - Plain Geotextile white PET Nonwoven geotextile made of polyester weberdry 130 PR Cement based waterproof coating weberdry 360 PU Liquid applied polyurethane waterproofing membrane weber jointseal PU One component polyurethane sealant