South Jersey Waterproofing & Structural Repair LLC

South Jersey Waterproofing, founded in 1967 and based in Williamstown, NJ, is a family-owned, third-generation contractor serving South Jersey and the Greater Philadelphia region. The company provides residential and commercial basement and crawl space waterproofing; foundation repairs and structural strengthening; historical and masonry restoration; exterior drainage and grading; concrete crack injections; and mold remediation and testing. Additional services include dehumidification, drying, sump pump systems, basement windows and slabs, termite-related repairs, and 24-hour emergency response.

All estimates and repairs are performed by in-house personnel rather than subcontractors, and crews follow specialized installation procedures. The team collaborates with engineers when needed to diagnose structural failures and implement appropriate repairs. Service areas include communities across New Jersey—such as Cherry Hill, Moorestown, Princeton, Haddonfield, Egg Harbor Township, and Gloucester County—and Pennsylvania, including Philadelphia, Yardley, King of Prussia, and Lansdowne.

Known for straightforward service without high-pressure sales tactics, South Jersey Waterproofing focuses on durable solutions that protect properties from water intrusion and structural damage, including work on historic structures.