Your Local Basement Waterproofing Experts in Port Washington

Looking for dependable basement waterproofing, Port Washington homeowners choose Three Brothers Waterproofing first. Port Washington is a small city in Nassau County, and its humid continental climate shapes the work we do here.

From Flower Hill to Baxter Estates, our crews cover Port Washington and the wider southeast New York, handling the basement waterproofing problems that are common to Nassau County's warm, humid summers and year-round precipitation. We know the local homes and move fast across all 1 ZIP codes.

Each Port Washington job is backed by a solid workmanship guarantee and a flat-rate quote you sign off on before we begin - no hidden fees. This is how Port Washington residents trust Three Brothers Waterproofing.