Basement waterproofing companies in Fairfield County

An independent, hand-verified directory of companies that waterproof basements in Fairfield County, Connecticut. Every fact below comes from the company's own website, as recorded in our research. Where a company publishes no address, no rating or no license number on its own site, we say so plainly instead of filling the gap from a directory.

Different kinds of company — do not confuse them

Not every company on this list does the same job. Basement waterproofing specialists waterproof basements as their main service. Foundation repair companies repair foundations and offer waterproofing. Drainage and crawlspace companies work with drainage, crawlspace and moisture control and offer waterproofing. General contractors, roofing companies and masonry/drainage companies offer waterproofing as one service line among others. Water damage restoration companies restore water damage and offer waterproofing as an installed system alongside restoration. Each profile states the company's type so you can shortlist the right kind of company first.

What the research found

• 20 companies with their own websites, approved one by one.
• Only 2 of the 20 publish a license number on their own website: Connecticut Basement Systems (Contractor ID #HIC.0526823) and Residential ResQ (HIC0644591). The other 18 either claim to be licensed or insured without publishing a number, or publish no number at all. In Connecticut there is no state basement waterproofing license as such: companies that contract home improvement work with consumers register as Home Improvement Contractors (HIC) with the Connecticut Department of Consumer Protection, and this guide records numbers exactly as the company's own site publishes them.
• Only 2 of the 20 publish a rating with a review count on their own website: Rain King Waterproofing (4.4/5.0, 16 reviews) and United Waterproofing (5.0, 91 Google reviews, with a caveat: the star value appears as images in a widget on its own site, with the count in text). Every other profile shows no rating; where a company's own site makes an uncounted claim (testimonials, a 'top-rated' label, a star image with no count), the profile explains why no rating is shown.
• No company in this guide publishes a fixed price on its own website. Ranges, estimates and discounts that appear on company sites are quoted in the cost guide, labeled as such, and are never presented as company prices.
• Service-area companies serve Fairfield County but either publish an office outside the county or publish no street address on their own site. They are marked as such.

A dry basement is usable space

Many Fairfield County homes were built over high water tables, and groundwater finds its way through basement floors and walls after heavy rain. Interior drainage and a sump pump collect that water and move it out before it can pool on the floor.

All 20 companies