External-tanking Add bookmark Solution main 1 Necessary products for this solution Biflex PL SBS modified highly flexible bituminous membrane with a plain surface. weberdry prime WB Cold applied bitumen coating weberep 331 TX Non shrink thixotropic repair mortar with fiber Biplas PL 4 mm APP modified bituminous membrane - Plain weberfloor 600 SCR Dry ready mix screed fiber reinforced