GAST CWR (COLOURLESS WATER REPELLENT)
GAST CWR (COLOURLESS WATER REPELLENT)
GAST Colourless Water Repellent is a modified silicone concentrate that is based on a blend of silane, siloxane and organic solvents.
Capable of deep surface penetration (impregnation agent) where a chemically-bound hydrophobic barrier is formed to inhibit the passage of water and water-borne contaminants, rendering porous materials impervious to water.
Primarily used as a sealer on atmospherically exposed and reinforced concrete structures, face brick walls, rock-face blocks and sandstone.
CWR may also be used as a sealer for lime stone structures, asbestos or fibre cement fascias and sheets.
This highly advanced product is deep penetrating and osmatic, allowing water vapour to escape.
