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Foundation Waterproofing Cost
Average cost to waterproof a foundation in Washington is over $6,150 (1,500 sq.ft. foundation)
Basement Waterproofing Cost
Total cost to waterproof a basement in Washington is about $3,690 - $6,150 (1,200 sq.ft. basement waterprofing using polyurethane sealant, interior sump pump, gutters and epoxy injection)