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TRUSTED BY THOMPSON, CT HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon14
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Thompson

Avatar for American Dry Basement Systems, LLC
American Dry Basement Systems, LLC
4.9(
118
)

Serving Thompson, 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!"
Drainage Trench
Jackhammer
Mixing SuperCrete
Compress Wash Stones
Spreading SuperCrete

+7

Response time11 hrs
8 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Groundworks
Groundworks
5.0(
12
)

Serving Thompson, CT and surrounding areas

Approved (Corporate)

Super Service Award Winner

In business since 2025

Free estimates

Warranties offered

"Aaron Lenker add Corbin Gillichbauer of Groundworks leveled concrete walks around my corner lot in Montoursville Pa. They arrived around noon time and were finished about 5 1/2 hours later. They did their work very professionally. They did an excellent job. I would rate their work 5 of 5 stars."
Foundation
Foundation
Foundation
Concrete
Concrete

+16

432 neighbors recently requested a quote
Avatar for New London Home Improvements LLC
New London Home Improvements LLC
5.0(
2
)

Serving Thompson, 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"
2 neighbors recently requested a quote
Avatar for Cowan Family Plumbing LLC
Cowan Family Plumbing LLC
5.0(
7
)

Serving Thompson, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Warranties offered

"He came over and did the rough-in for finishing my basement. Took the time to think about what was the most logical things need for me as a homeowner (access to pipes, shut off valves, hook up locations, etc..) very professional and showed quality work."
Bathroom Install
Bathroom Install
Master Water Conditioning System Install
Master Water Conditioning System Install
Response time4 days
Response rate100%
10 neighbors recently requested a quote
Avatar for Stonecare Paving and Masonry
Stonecare Paving and Masonry
4.7(
64
)

Serving Thompson, CT and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"Fantastic. I can't recommend them enough. The owner is one of the most honest, conscientious and dependable workers I've ever had the pleasure of hiring, and his crew was the same. These are expert craftsmen, and the work is stunningly beautiful. They are worth every penny (good masonry doesn't come cheaply)."
New patio with design in center using granite and charcoal colors to highlight
Sealed and waterproof basement
Basement fully waterproofed
Patio done in Holland stone
Damp proof drainage

+918

Recommended by96%of homeowners
Avatar for The BullBag
The BullBag
5.0(
15
)

Serving Thompson, CT and surrounding areas

In business since 2001

Credit card accepted

"Great! This company is professional, easy to work with, and offers a great value for the service. I did the leg work and compared them and their pricing with that of several dumpster companies and will continue to use the BullBag. Their pricing always blows the dumpsters away - BullBag doesn't charge by how much it weighs like a dumpster does AND I get to keep my BullBag. I don't have to wait for a dumpster to be delivered either."
The BullBag truck in MA
The BullBag truck in NY
Toys for Tots
Recommended by100%of homeowners
Avatar for Set In Stone
Set In Stone
4.3(
23
)

Serving Thompson, CT and surrounding areas

In business since 1982

Free estimates

"Ray and his team were incredibly professional, kind and courteous throughout all of the home projects. Their work on my basement foundation, installation of French drains and the rebuilding of an exterior wall were all phenomenal and at a very fair price. I highly recommend their services 10/10"
Recommended by86%of homeowners
Showing 1-10 of 41
Basement Waterproofing questions, answered by experts

You can seal a concrete slab by cleaning the surface, filling in any cracks, etching the surface, applying a sealer, and letting it dry. Concrete slabs don't typically need sealing, but you can use a topical concrete sealer if you notice signs of water damage. If you haven't already fixed the cause of the leak, then you'll want to repair the plumbing before you seal a concrete slab.

It’s not the number of weep holes that should be of concern to builders but rather their spacing. Weep holes are usually spaced anywhere between 16 inches on center when using round tubes or wicking materials and 24 inches on center when using open-head joints. This is a more conservative spacing than the 33-inch maximum spacing on center that’s mentioned in the International Residential Code. All in all, the total number of weep holes a brick exterior should have will depend on the size of the structure.

A crawl space is an area under the house that provides access to plumbing, electrical, heating ducts, and other HVAC units. Its purpose is to create a buffer between the ground and the living area, helping with ventilation, moisture control, and access for maintenance or repairs. Crawl spaces are most often seen in houses in North America which are built on concrete foundations versus other parts of the world where buildings are constructed differently.

No, everything doesn’t get wet if the bathroom is well-designed and the fixtures are properly installed. It’s important that the floor of a wet room drains correctly, and proper waterproofing and slip-resistant flooring are used to avoid creating slipping hazards. Since the shower isn’t housed in an enclosed space, you’ll need to make sure the towel rack and toilet paper holder are placed in areas where they won’t get wet.

Crawl space foundation problems can stem from a few different issues, but the most common are moisture and water problems and soil instability. Moisture and water issues are often a result of poor drainage, which can lead to water intrusion and soil expansion and contraction, leaving your foundation under added stress. A few things can cause soil instability, including poor drainage, karst landscapes and resulting sinkholes, and poorly compacted soil during construction.

The Thompson, CT homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.