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Avatar for Groundworks
Groundworks
4.9(
13
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RaiseConcrete Foundation - Repair+1 more

Serving Windham, 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

Foundation
Foundation
Foundation
Concrete
Concrete

+16

551 neighbors recently requested a quote
Avatar for American Dry Basement Systems, LLC
American Dry Basement Systems, LLC
4.9(
118
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Windham, CT and surrounding areas

Approved

In business since 1997

Free estimates

Credit card accepted

"Let me start by telling you my backstory. I live in a house built in 1929, it has a stone foundation. It wasn't until Hurricane Sandy that I felt the effects of a house that had no waterproofing and we had about three feet of water. We did a little bit of mitigation, and had no more problems for awhile. More recently, NY had five days of non stop rain and the walls in basement and flooring barely held it together. So that's when I knew I really had to do something. Every time we heard the weather report we would keep checking that basement and our little water pump. The water pump did ok, but we had wet vacs and worked like a team, but the water was coming up through the floors. Just a little 2-3 inches can cause so much damage. This is climate change, a lot of my friends were suffering from flooding for the first time and it wasn't going to get any better. So that was it, my husband and I interviewed four different places. They were all professional, but there was something about the detailed 2 hour interview that Scott Cort, one of their top inspectors did with us and we knew that was the place we were going to deal with. Plus he dealt with a multitude of questions from my husband and didn't flinch. He was patient, showed us exactly what they would do to protect the basement from flooding. He saw how stressed I was and just plain tired of this. It was a very comprehensive plan. Scott explained the lifetime warranty. The system is self-cleaning and requires zero maintenance. There is also a clog free guarantee. It included a PITBOSS waterpump with a wifi system and a backup battery in case the power goes out. He also told me that there would be very little dust. And there was very little dust. It only took two full days of his crew working nonstop. I was a bit nervous about cutting the walls, but he picked up the phone every time I called. If he was busy, he texted me right away and got back to me in 30 minutes. (And I call a lot). I am happy with the results. My contractor checked it out and said American Dry did a great job after dropping by to see the results. And most of all, we can sleep when it rains. We are ready!!! By the way, I have never written a review this long, but I needed to shout them out, and it was competitively priced!! Thank you AmericanDry, thank you Scott Cort. It was a pleasure!"
Drainage Trench
Jackhammer
Mixing SuperCrete
Compress Wash Stones
Spreading SuperCrete

+7

Response time11 hrs
10 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Eastern Waterproofing Co., Inc.
Eastern Waterproofing Co., Inc.
4.6(
40
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Windham, CT and surrounding areas

Approved

In business since 1976

Free estimates

Warranties offered

"Jon is professional and a man of his word. My wife and I had some leakage in our finished basement. After substantial research, I contacted several companies in the area. Jon and his crew at Eastern responded faster than every other company and offered us the best price for the least hassle. The crew works hard and fast. They were respectful of our home and property and cleaned up after themselves when they were done working. Our interior foundation drain is working great and can sleep in peace knowing that our basement is dry, even on the wettest nights.They stand by their work and even came out to install a false floor under our oil tank after we replaced it., at no additional fee. I would 100% recommend Jon and his crew for all of your waterproofing needs."
broken walk
repai
repair
addition
sidewalk and dumpster pad

+67

Response time2 days
18 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Canuto Conn-Crete, LLC
Canuto Conn-Crete, LLC
4.8(
12
)
Poured Concrete Wall - Repair

Serving Windham, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Credit card accepted

"Elson did an excellent job removing an old crumbling entrance to my house. He installed new poured concrete stairs and a side walk. They are much safer and look great. I would not hesitate to hire him again in future. He is friendly, competent and reasonably priced."
Response time6 hrs
Response rate99%
7 neighbors recently requested a quote
Avatar for Advanced Basement Waterproofing LLC
Advanced Basement Waterproofing LLC
5.0(
5
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or Replace

Serving Windham, 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.

Knell walls
Knee Walls
After
Before
Concrete Work

+1

325 neighbors recently requested a quote
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Foundation Repair questions, answered by experts

Around 25% of homes have foundation problems - it’s a very common issue. Foundation problems can range from very minor to severe and urgent. Call a foundation inspector to determine the severity of any potential issues you identify with your foundation.

If your building department catches you or a contractor doing foundation work without proper permits, they will likely put the work on hold until you secure the necessary permits, which can cause delays of days or even weeks. You can also face violation charges for construction without a permit, which can cost hundreds, depending on where you live.

The actual foundation repair costs will depend on the extent of the damage, how many blocks you need, labor costs, and material costs. As an estimate, the average repair costs for a cinder block foundation fall between $350 and $25,000. Because the range is so large, it’s important to call a professional foundation repair company and have them assess the damage and estimate the repair costs.

It’s usually not a big deal if your foundation sinks between 2 and 3 inches into the ground after construction, provided the settlement occurs evenly. This is usually indicative of normal settlement that occurs as the soil under your home adapts to the weight of the structure. If the home sinks more into the ground or the settlement occurs unevenly, leaving portions of your home to sink further down than others, then call a foundation repair specialist to address the issue and avoid additional damage.

A leak under your foundation from a water supply line or sewage line is likely to lead to water pooling on certain areas of your property during rainfall, abnormally fast-growing or green grass in certain sections of your lawn, and differential settlement of your foundation, which can result in large foundation cracks, windows and doors failing to operate properly, a wavy or sloping roofline, or damages or irregularities in your interior walls, including cracks and bulging. If it’s a plumbing line embedded in your slab, you’ll also likely notice above-average water bills.

The Windham, CT homeowners’ guide to foundation repairs

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