The Basement Waterproofing Product that Winthrop, Massachusetts, area customers and contractors trust.

SANI-TRED products have been trusted by over 100,000 do it yourselfers and contractors to permanently seal wet, leaky basements. Excess water in your basement not only limits your use of the space, it can also cause a number of serious problems, from mold to the weakening your home's foundation. However, many homeowners put off repairing the problem because traditional solutions can be costly and ineffective. Save thousands over traditional waterproofing methods with the SANI-TRED waterproofing system.

Alternative basement sealing methods only mitigate wet basements and can be very costly. They don't promise to eliminate water in your basement, just to redirect it. SAN-TRED uses a simple four-step process for waterproofing leaky basements that keeps water out for good! The products are solvent-free, non-hazardous and non-flammable.

Proven by over 30 years of experience and thousands of customers, the only way to completely waterproof a basement is on the inside of the basement walls and floors, not the outside. The SANI-TRED waterproofing system stops all ground water entry, basement humidity, mildew, mold, and dampness problems. It eliminates leaks and 99% of deadly radon gas by sealing the basement where it needs it most – on the inside. If you are searching for a basement waterproofing solution in Winthrop, Massachusetts, then look no further. SANI-TRED offers free technical support by phone and live chat.


  • The only basement waterproofing product scientifically proven to work permanently.
  • SANI-TRED is 99% effective at preventing harmful Radon Gas from entering foundations.
  • SANI-TRED waterproofing products are safe, solvent free, non-flammable, and low VOC.
  • The permanent solution to stopping the water from entering your basement!

Learn more about how the SANI-TRED system can help you permanently waterproof your basement this weekend.

Join other satisfied Winthrop, MA customers, and leave basement waterproofing worries behind forever. Call 1-866-784-3308 for expert advice from our waterproofing pros.

Don't leave before checking our reviews to see why homeowners and contractors near you trust SANI-TRED products for their waterproofing projects.

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