4.2 
19 *The Angi rating for Basement Waterproofing companies in Union, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
*The HomeAdvisor rating for Basement Waterproofing companies in Union, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
Last update on December 24, 2025
Serving Union, CT and surrounding areas
Approved
In business since 1997
Free estimates
Credit card accepted
"I had my basement waterproofed almost 3 years ago by them and I had no issues since then with the basement flooding regardless of how much it rains. I highly recommend using American Dry Basement!"
+7
Serving Union, CT and surrounding areas
Approved
In business since 1987
Free estimates
Warranties offered
"Excellent, very professional crew, installed a new sump pump quickly . Very personable, clear explanation of all work"
+13
Serving Union, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2006
Free estimates
Emergency services offered
"Very friendly guys. They were understanding and worked with me and my partner for budgeting and getting our basement waterproof."
+37
Serving Union, CT and surrounding areas
Approved
In business since 1976
Free estimates
Warranties offered
"Everyone was really good to work with at the beginning of the waterproofing to the very end. No complains about the completed Job. I have yet to see the system work because we just have not had Heavy rain over a Long period of time."
+67
Serving Union, CT and surrounding areas
Approved
In business since 2024
Free estimates
Emergency services offered
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs.\nIt is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project.\nIn order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer \nin a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
+1
Serving Union, CT and surrounding areas
Approved
In business since 2016
Free estimates
Warranties offered
"I was pleased with the work done. The technicians were courteous and the foreman explained each step as he went along. The cleanup was excellent."
+22
Serving Union, CT and surrounding areas
Approved
In business since 2022
Free estimates
Credit card accepted
"I recently hired this company to waterproof our Basement. We had lots of water coming in and for a long time and this company came right out and Waterproofing repaired everything on a timely manner in a very affordable price"
Serving Union, CT and surrounding areas
Approved
In business since 2016
Free estimates
Warranties offered
"Great job on basement insulation."
+5
Serving Union, CT and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 2025
Free estimates
Warranties offered
Groundworks is the North America?s leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we?re there with one mission ? to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing\n
+16
Serving Union, CT and surrounding areas
Approved
Free estimates
Warranties offered
Small jobs welcome
"We had a leak in our foundation that flooded our finished basement newlondonhomeimprovements came to our property and took a look at what we had going on. They did there inspection and found a solution for the issue. They came out dug the out side of the foundation found the issues with our foundation and then sealed our foundation with a drainage system Now our basement is completely dry thanks again newlondonhomeimprovements"
From average costs to expert advice, get all the answers you need to get your job done.
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