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Basement Waterproofing in Connecticut and Westchester County, NY

Here at Connecticut Basement Systems, basement waterproofing is our specialty. Since 1987, we've fixed thousands of leaky, wet, damp and musty basements in Connecticut and Westchester County, NY. We've built a strong reputation in Connecticut and New York for being the best waterproofing company and we always strive to be better than the rest.

We help keep basements dry using our own quality, patented products, such as the TripleSafe sump pump, WaterGuard drainage system and SaniDry dehumidifier. Our waterproofing systems are installed by certified specialists and come with a transferable, lifetime warranty.

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If you have a water problem in your basement, we can help. Call us or click below to request a no-obligation inspection and free estimate today. We want to help you make your basement dry all the time!

We make your basement dry with customized solutions

Our complete lineup of basement waterproofing products includes all the solutions you need for a dry, comfortable, odor-free basement; no matter what’s causing your issues. We offer many solutions for your home, including:

  • Powerful sump pumps with battery backup
  • Basement drainage systems
  • Energy-efficient dehumidifiers
  • Leaky crack repairs
  • Vapor barriers
  • Waterproof wall panels and flooring
  • Basement windows
  • Water heater flood protection

Besides being the trusted waterproofing company in Connecticut and New York, we're also the parent company of the largest network of basement waterproofing contractors. Our products have been installed in hundreds of thousands of basements and crawl spaces throughout North America.

With no lasting waterproofing solutions available, we decided to develop our own, and created a line of patented basement products. Our tested, proven, award-winning products come with transferable warranties, ensuring your home is protected year after year. 

Get a free estimate from your local basement repair expert

Your damp or wet basement can cause more than just a headache; these issues can create bigger problems like mold, mildew, rot, structural damage, and a variety of health problems.

If you think you have a basement waterproofing problem, request a free basement inspection and estimate today. Your certified specialist will find the source of the problem and provide an estimate for the best repairs for your home.

Connecticut Basement Systems services homes in Connecticut and New York, in areas like Danbury, New Haven, Fairfield, Greenwich, Ossining, New Rochelle, White Plains and surrounding areas.

Basement Waterproofing Videos

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How to Waterproof Leaky Stone Foundations

Welcome to Episode 1 of the All Things "Basementy" Video Series! In this series Larry Janesky, owner and... Watch Video »

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Exterior Excavation

Heavy equipment is brought in to dig out the entire perimeter of the basement. New drain lines are installed, and sometimes a waterproof coating is applied to foundation walls. This waterproofing strategy is expensive and often damages lawn and garden areas. Exterior drains are prone to clogging with silt and roots over time.

Interior Subfloor Drain

This drain line is installed underneath the basement floor, just inside the foundation walls. The hidden drainage system brings water to a sump pit, where a sump pump automatically pumps it outside. Also known as a French Drain, this system is not prone to clogging; it’s reliable and easy to service.

Interior Baseboard System

A hollow plastic baseboard is installed along the base of basement walls to form a drainage channel that directs water to a sump pump system. A baseboard-type drainage system is sometimes recommended when the basement slab is too thin to accommodate a French Drain.

Negative-side Sealant

This waterproofing technique involves "painting" basement walls and floors with a waterproof, cement-based coating that's supposed to seal out moisture. Even when applied correctly, this thin membrane usually fails in response to prolonged hydrostatic pressure from outside the foundation.