REDWOP PU-500 is a hydrophilic polyurethane based single component foam resin used for injection into concrete structures exhibiting water seepages. It is a single component hydrophilic resin that reacts to form a flexible closed cell foam or gel depending on the amount of water it comes in contact with. Due to its flexible property, It is an ideal choice of material for mitigating water ingress through RCC members that are likely to be subjected to dynamic loadings, thermal expansion/ contractions and other associated movements It is used to stop water ingress through concrete elements such as basement podium slabs, parking structures slabs, waffle slabs, roof slabs, sewage treatment plants, tunnel linings etc. It is injected using appropriate high pressure injection equipment from the “negative side”.