PenSeal WB is a waterborne, water repellent sealer for concrete, masonry, compressed sheet and natural stone surfaces.
PenSeal WB is a ready to use waterborne mixture of silane, siloxane, and synthetic resins. It is used to impart water repellency to inorganic substrates such as mineral construction materials. In this respect, it differs from conventional (mono-functional) water-repellents. The pores of the substrate remain open, the water vapor diffusion is hardly affected, if at all.