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The Tri-State Area's Trusted Waterproofing Service


About LJS Waterproofing LLC

We started as a chemical grout injection waterproofing company. We have over 60 years of combined experience in the waterproofing industry. We have completed many successful projects  for property managers, wastewater treatment plants, desalination plants, New York City MTA and general contractors up and down the east coast.

​We are a chemical grout injection & waterproofing company specializing in acrylate and polyurethane grout injection, curtain wall grouting, epoxy injection, acrylate soil stabilization, pressure grouting, lock & dams, leaking tie backs, leaking dams, tunnels, utility vaults, parking garages, moisture barriers, void filling, epoxy floor coverings, pipe penetrations, leaking conduits, leaking foundations, sea walls, retaining walls, slab stabilization, box culverts, UV stable sheet membrane waterproofing,¬†spalled concrete repairs, leaking elevator pits, manholes infiltration control & any areas where water infiltration may be an issue on your project.