NWCW, LLC (Northwest Concrete Waterproofing) has made a name for itself industry-wide as the “go to” specialty contractor in the greater Pacific Northwest region for elevator pit leak repair, seawall / bulkhead repair and waterproofing. We are structural concrete waterproofing, sealing, commercial coatings, and protective linings specialists. NWCW’s expertise is proven and our knowledge and experience are valued for projects such as concrete waterproofing, leak repair, wastewater system maintenance, asset rehabilitation and repair as well as troubleshooting.We are also a local and family owned business that has the capacity to serve the Seattle, Tacoma, Portland and Spokane markets.