BINA P.U GROUT is a MDI-base polymer system formulated to meet the requirements of modern building leak repair. The material is solvent free and therefore, non-flamable and easy to apply. The gel/reaction time can be adjusted by adding PU HARDENER or CATALYST. BINA PU GROUT reacts upon contact with water and form closed-cell polyurethane foam, which is specially formulated for building waterproofing purpose.