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Best basement waterproofing pros near Northfield, CT

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TRUSTED BY NORTHFIELD, CT HOMEOWNERS

  • Average homeowner rating star icon4.9
    Average homeowner rating
  • Verified reviews icon17
    Verified basement waterproofing services reviews

Top-Rated Basement waterproofing pros in Northfield - Updated Nov 2026

Avatar for American Dry Basement Systems, LLC
American Dry Basement Systems, LLC
4.9(
118
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Northfield, 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
3 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 / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Northfield, 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."
broken walk
repai
repair
addition
sidewalk and dumpster pad

+67

Response time2 days
6 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Groundworks
Groundworks
4.9(
13
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Northfield, 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

430 neighbors recently requested a quote
Avatar for Solid Ground Solutions LLC
Solid Ground Solutions LLC
5.0(
7
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Northfield, CT and surrounding areas

Approved

In business since 2025

Free estimates

Offers commercial services

Solid Ground Solutions LLC is a BBB Accredited business with an A+ rating, proudly serving residential and commercial customers with professional excavation, grading, and land clearing services. Backed by nearly 20 years of industry experience, we are committed to delivering quality workmanship, long-lasting results, and dependable service on every project. \n \nWe take pride in our honest communication, fair pricing, and local, customer-first approach. Whether you're preparing a site for new construction, improving drainage, or clearing land for development, you can count on our team to get the job done right. \n \nCall Nick at (203) 437-0237 today for a complimentary estimate and experience the Solid Ground Solutions difference.

Avatar for Thomas Gianni & Sons, Inc.
Thomas Gianni & Sons, Inc.
2.4(
12
)
Basement Drainage Channels - Install

Serving Northfield, CT and surrounding areas

Approved

In business since 1955

Free estimates

Small jobs welcome

"My review of the work I have had done by Thomas Gianni & Sons Inc.. They really did a great job of working on my property. I call their office and asked to get some excavation of removing a couple of tree stumps in my yard and to put down approx. 20 yds. of gravel in an area near my shed. It was just about three or four days and they call me back to confirm to come out the next day, June 22. Their employee came by early in the morning and went over all the project. Figured out what equipment he needed and measured up for the materials and started the work about an hour later. He was very cautious and caring about minimal damaging to the yard. After removing the stumps he graded the surrounding area with the machine to the point where I only needed to rake it out to plant new grass. The gravel was put down flat and clean; not a mess. I would definitely hire them again."
Business Card
store front
Before Bathroom
After Finished
Addition Overhang

+5

Response time9 hrs
Recommended by75%of homeowners
Avatar for Empire Construction Waterproofing llc
Empire Construction Waterproofing llc
5.0(
15
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Northfield, CT and surrounding areas

In business since 2006

Free estimates

Warranties offered

"Flooding in our basement has been a recurring problem over the years. We’ve had various companies do work for us but they failed to keep our basement dry for longer than a few months at a time and only did a semi okay job. That all changed when we hired Empire Construction Waterproofing. Chris gave me a very reasonable price for the size of our project. They had a team down there starting to work almost right away! They were incredibly professional and worked very efficiently. Once they were done they left the space in great condition. My husband and I were very satisfied with the project. The results went above and beyond our expectations, the quality was unlike anything we’ve ever seen before. It was such a pleasure working with Chris and Empire Construction Waterproofing. I have recommended them to all of my friends and family. If you’re having basement issues definitely give them a call."
Response time12 hrs
Recommended by53%of homeowners
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Basement Waterproofing FAQs, answered by experts

Overwatering can cause issues like water pooling and drainage problems. To prevent overwatering, monitor your soil levels on a regular basis and change your watering schedule as necessary.

You don’t always need to install a dehumidifier in your encapsulated crawl space, but it might be a good idea in certain instances. If you notice obvious signs of condensation, mold, or musty smells permeating from your crawl space, a dehumidifier can help. It’s ideal for homes in humid areas.

In a worst case scenario, structural damage like rust on metal beams, rotting wood, and swelling on doors and windows can signal moisture problems that would benefit from a dehumidifier.

Most houses will have vents in the crawl space. This allows for air passage and energy retention, which in many ways can help control the temperature inside the home. If you are able to consider the cost of a crawl space encapsulation, you may not need your crawl space vents at all. 

Water damage always poses a primary risk of mold and mildew, but growth is not guaranteed. Whether mold develops depends on several factors, including the severity of the water damage and how quickly the area is addressed. To prevent mold, you must act fast—ideally within the first 24 hours. The process involves cleaning up all standing water and thoroughly drying the affected area. If the damage is extensive, the cleanup was delayed, or you suspect mold might be present, it is safest to assume it has grown and contact a professional mold inspector or removal expert to assess the situation.

Yes, usually you will need some kind of vapor barrier on the exterior walls when the framing is attached to concrete and masonry surfaces.

The Northfield, CT homeowners’ guide to basement waterproofing services

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