United Waterproofing

Ridgefield, CT Owner / Principal: Jason Ferrandino

United Waterproofing, LLC provides residential and commercial basement waterproofing, foundation repair, basement finishing, construction, masonry, remodeling, excavation, and related services.

About

About United Waterproofing

Based in Ridgefield, Connecticut, United Waterproofing provides residential and commercial waterproofing and foundation services throughout Connecticut, Westchester County, Northern New Jersey, and Southern Massachusetts. Its work includes interior and exterior basement waterproofing, foundation repair, crawl space waterproofing and encapsulation, stormwater management, sump pump installation, garage and concrete slab waterproofing, and mold mitigation. The company also handles basement finishing, construction, masonry, remodeling, excavation, and landscaping projects.

United Waterproofing offers 24/7 emergency cleanup and serves communities across Fairfield, New Haven, and Middlesex counties, along with numerous towns in western Connecticut and the Hudson Valley. The company reports 20 years in business, is fully insured, and provides complete job documentation for its projects.

Google reviews

Featured Google Reviews

A selection of recent reviews currently displayed from this contractor's Google Business Profile.

4.9average on Google Maps · 95 ratings via Google Maps
  • Steve F★★★★★September 27, 2026

    The basement waterproofing job was excellently done and their knowledge outperforms anyone in the industry.

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  • Delia Ferrandino★★★★★September 27, 2026

    Just had United Waterproofing waterproof my basement. Their knowledge of waterproofing is beyond any other company out there. I highly recommend them. Delia F

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  • Christie Koolis★★★★★September 11, 2026

    We had a water issue in the finished part of our basement, and Matt came quickly to address the problem. We had a full French drain installed within a 3 day work span — everything was meticulous. Would recommend again and again. Thank you, Matt, Willie, and team for a job well done.

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  • Hillary Sarrasin★★★★★September 9, 2026

    Matt at United Waterproofing was fantastic to work with. I purchased my home, and was assured by the previous owner that the basement is always dry. That was not the case. I had 3 different companies come out to quote the job for full waterproofing. Matt's quote was competitive, and he was willing to work with my budget. During the quote process, Matt was the only 1 of the 3 who didn't speak to me like I was an idiot. If you're a woman, you know how this goes, especially with home projects. The other 2 quotes took entirely way too long; I had to cut one guy off and tell him I needed to get back to work after an hour. Matt knew his stuff, came out to look at my basement himself, took notes, explained what his crew would do, how long it should take and got back to me the next day with a quote. His crew removed the drywall about 2 feet up, jackhammered the perimeter of my basement, installed drains, and a battery back up sump pump, poured the back over the drains to re-do the floors, and repaird and painted the drywall. It's been a pretty wet summer, and I haven't had a drop of water come in since. Matt's communication has been great, he's always available by phone or text, and was just generally helpful, respectful, and informative throughout the entire project. I highly recommend United Waterproofing.

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  • Chris★★★★★August 19, 2026

    I recently had some fairly significant groundwater intrusion in my basement and had four waterproofing contractors inspect the house and quote the work. Matt at United was incredibly knowledgeable and quickly worked up a plan for remediation, including sump pump and interior French drain. Their cost was efficient, they got out within one week to start work (all of the other contractors told me I would have to wait 5-6weeks), and their crew did a fantastic job. Basement is bone dry and will stay that way for years to come!

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United Waterproofing(203) 501-5053