WAKOL PU 280 Moisture Barrier is a one component, solvent free waterproof primer for priming porous and non-porous subfloors and for rigidifying soft subfloor surfaces. Premium moisture barrier for "green" concrete slabs, no mixing required, fast curing, easy to spread and excellent coverage. With zero VOC, PU280 has been designed to be used with Wakol MS260 adhesive and has been tested and guaranteed with Loba coating systems. Available in 5kg and 11kg.