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Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
4.3(
397
)

Serving Cornwall, CT and surrounding areas

Approved

In business since 1987

Free estimates

Warranties offered

"The consultation went great. Cary came out and spent about an hour measuring and evaluating our basement. He left me with a quote the same day as well as my options. Although a little pricey we decided to go for it. The guys came out a few weeks later to insulate and were here all day. No issues there. However, the basement has not warmed up since and we spent quite a bit of money and were told it would be about 60-65° down there. It only increased by maybe 5° and still isn’t even close to 60/65°. I emailed the guy Cary who came out and was told he’d talk to his guys about it. No response. I had to follow up. Then he said he’d send someone out. Never got a call or anything to schedule it. Again I had to reach out. Weeks later he finally said he’d come out on 3/18/21 at noon. It’s now almost 1pm and he’s still not here. Their service was great when they wanted our money but now that we have paid, it seems we are not longer a priority and they don’t care to come fix whatever the problem may be. Very disappointing. We spent thousands of dollars and our basement still feels very cold!"
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+12

11 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Leonard's Masonry Service, LLC
Leonard's Masonry Service, LLC
5.0(
36
)

Serving Cornwall, CT and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Excellent work repairing my stone wall at a very affordable price. They were able to complete my project and add drainage in a days work, very responsive and professional"
Paver patio
Response time4 hrs
Response rate95%
6 neighbors recently requested a quote
Avatar for Perez Asphalt & Paving
Perez Asphalt & Paving
4.9(
45
)

Serving Cornwall, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"Efraim Perez is the best I've ever hired for crack repair and filling. He responded quickly, arrived exactly on time, stood behind his work, was pleasant and professional. He's great, insured, and solid. I would hire him for other projects too. Highly recommend."
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+20

Response time11 hrs
4 neighbors recently requested a quote
Recommended by79%of homeowners
Avatar for Groundworks
Groundworks
5.0(
7
)

Serving Cornwall, 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

Foundation
Foundation
Foundation
Concrete
Concrete

+16

295 neighbors recently requested a quote
Avatar for American Dry Basement Systems, LLC
American Dry Basement Systems, LLC
4.9(
118
)

Serving Cornwall, CT and surrounding areas

Approved

In business since 1997

Free estimates

Credit card accepted

"So happy I shopped around before finding American Dry Basement Systems. Not only were they affordable, but were extremely knowledgeable and helped me make an informed decision about the integrity of my home's foundation."
Drainage Trench
Jackhammer
Mixing SuperCrete
Compress Wash Stones
Spreading SuperCrete

+7

Response time11 hrs
4 neighbors recently requested a quote
Recommended by66%of homeowners
Avatar for Husky Masonry And Paving
Husky Masonry And Paving
4.9(
15
)

Serving Cornwall, CT and surrounding areas

Approved

Super Service Award Winner

Free estimates

Customers say: True professional

"Outstanding! John took our vision and brought it to life in a way that went beyond anything we could have imagined. What could have been a simple repair turned into a complete transformation. The stonework they created not only improved the look of our home but made it stand out in the neighborhood. People keep stopping in front of the house to admire it. The quality, craftsmanship, and attention to detail are second to none."
Patios Project
Driveways - Asphalt Project
Patios Project
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+17

24 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Budget Dry Waterproofing, Inc.
Budget Dry Waterproofing, Inc.
4.4(
240
)

Serving Cornwall, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2006

Free estimates

Emergency services offered

"Rick did an amazing job fixing the crack in my basement foundation. The company is very professional, knowledgeable and affordable. I highly recommend this company to anyone needing waterproofing in their home."
Drain at base of bilco
going up on the wall
finished wall area
completed
finished sump pump area

+37

Response time1 day
119 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Leo Construction LLC
Leo Construction LLC
5.0(
6
)

Serving Cornwall, CT and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Hello, I have to tell you that Leo construction and masonry did an amazing job repairing and replacing my front steps and made a sidewalk that is beautiful! The job exceeded my expectations. We are so happy with the all of the work they did. If anyone needs masonry of any kind , Leo construction is the company to call. Don’t hesitate to call them, they are the very best. I want to thank Leo and son for your hard work and professionalism. My best, CJF, Hamden, ct. I can add some pictures."
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+10

Recommended by16%of homeowners
Avatar for Ervin H Construction LLC
Ervin H Construction LLC
5.0(
8
)

Serving Cornwall, CT and surrounding areas

Approved

In business since 2021

Free estimates

Customers say: True professional

ERVIN H CONSTRUCTION LLC is dedicated to providing our customers with the best quality and craftsmanship. We are here to build relationships with our customers and communities and to provide our employees with a great place to work. We look forward to working with you!

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+31

Recommended by100%of homeowners
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Foundation Repair questions, answered by experts

Yes, slab foundations can sink just like any other foundation type. Floating slabs are the most prone to differential settlement and foundation sinking because they sit directly on the surface of the earth. Slab foundations that have footings—including slab-on-grade foundations and monolithic slab foundations—get additional support from soil further down and are less likely to sink over time, especially under larger, heavier structures.

You could DIY the work, but unless you have plumber’s knowledge for identifying and fixing a slab leak and specialized equipment in your tool shed, attempting to DIY your slab leak repair isn’t a good idea. It’s simply not something that the average homeowner can take on themselves, regardless of how many successful DIY projects they’ve got under their belt. You could, however, do something simple like foundation waterproofing yourself to save some money on the post-repair work.

A slab-on-grade or slab foundation is a great option in many areas—usually in warm or moderate climates—and has been a successful foundation style for many decades. Slab foundations don’t require excavation or concrete block wall construction, so they’re the least expensive foundation type. They’re also the fastest to construct and don’t have many issues with moisture or water intrusion. However, they don’t give you extra storage space or potential living space like a crawl space or basement would, and they’re not ideal in colder areas where utility lines can freeze and frost heave can cause major damage.

Addressing gaps and cracks reduces heat loss and improves energy use.

While a contractor is on-site repairing your concrete steps, you can have them inspect other concrete surfaces for minor damage. They may be able to fix cracks in your driveway or garage floor during the same visit. You can also ask them to check your home's foundation for minor issues they can address. However, general concrete repair experts typically cannot handle larger jobs, like leveling a sunken foundation. For major structural projects, you will need to hire a structural engineer.

The Cornwall, CT homeowners’ guide to foundation repairs

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