PENTENS PU-101 is a one-part hydrophilic polyurethane grouting material, specially designed for construction joints and cold joints. All of these unwated openings in concrete structures may cause very serious problems in water leakage. Most of these problems can be solved by utilising PENTENS Pressure Injection Systems. It has been proven to stop water leakage permanently. Slabs on grade, construction or control joints, parking garages, manholes, tanks, dams and many other structures can now be fixed permanently.