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  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon75
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Norwalk

Avatar for WEATHER-TITE WATERPROOFING INC.
WEATHER-TITE WATERPROOFING INC.
4.8(
100
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Norwalk, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1992

Free estimates

Warranties offered

"Professional, reliable, honest and hardworking. Bob was wonderful to work with! We urgently needed basement waterproofing and Bob was efficient and worked in a timely manner. I have already recommended Bob to a friend and will continue to do so!"
Response time12 hrs
38 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for American Dry Basement Systems, LLC
American Dry Basement Systems, LLC
4.9(
118
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Norwalk, CT and surrounding areas

Approved

In business since 1997

Free estimates

Credit card accepted

"I had a great experience with American Dry Basements. From start to finish, their team was professional, knowledgeable, and easy to work with. They took the time to explain everything clearly and made sure the job was done right the first time. What really stood out to me was their fair and affordable pricing—no surprises, just honest work at a reasonable cost. It’s not always easy to find a company that combines quality service with good value, but they definitely delivered on both. If you’re looking for reliable basement waterproofing with a team you can trust, I highly recommend giving them a call."
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 Dirty Deeds Basement Waterproofing
Dirty Deeds Basement Waterproofing
5.0(
4
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Norwalk, CT and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Dean and his crew were professional, reliable, extremely neat/clean and went above and beyond, often, to make the sure work was completed to my satisfaction. They did small things not even required to make sure the entire basement area was much more than even expected. The basement has never been so dry in the 40 years I have lived here. I would hire them again in a heartbeat."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+24

Response time7 hrs
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Ron's Masonry
Ron's Masonry
5.0(
29
)
Basement Drainage Channels - InstallFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Norwalk, CT and surrounding areas

Approved

In business since 1995

Emergency services offered

Small jobs welcome

At Ron's Masonry, we pride our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business.

Walkway
Steps
Footing
Walk
Walk

+36

Response time1 day
Response rate86%
28 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
4.9(
13
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Norwalk, 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

641 neighbors recently requested a quote
Avatar for Economy Handy Carpenter, LLC
Economy Handy Carpenter, LLC
4.6(
329
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Norwalk, CT and surrounding areas

Approved

Super Service Award Winner

In business since 2000

Free estimates

Emergency services offered

"At the start, it was really hard to find someone to solve my first bout of water damage, being a first time homeowner. And the offers were mostly focused either on the plumbing or the drywall, never both. But the team behind Economy did both really well and restored the effected damage like it barely happened. Price was reasonable and would recommend for future jobs whenever needed."
Response time10 hrs
22 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for KNL CONSTRUCTOR LLC
KNL CONSTRUCTOR LLC
5.0(
11
)
Basement Drainage Channels - Install

Serving Norwalk, CT and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

*****Call Today for an Estimate @ 475-279-4864***** With over 10 years of experience, I take pride in my quality craftsmanship. We are owner operated, and believe in building long-term relationships with our clients by delivering honesty along with exceptional work. We pride our company on reliability, great communication, integrity, and customer service. We are experts in our trade and will do our best to keep you as educated as we can on your particular project. Give us a call today! We look forward to working with you!

Pavers
Pavers
Concrete Border
Concrete Border
Bluestone

+2

11 neighbors recently requested a quote
Recommended by66%of homeowners
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Basement Waterproofing questions, answered by experts

A sewage smell in your crawl space is usually from a damaged or clogged pipe leaking sewer gasses or actual sewage underneath your home, but there are some other common causes. Moisture, from poor or damaged encapsulation or a malfunctioning sump pump, can harbor mold and bacteria, causing a musty smell. Pests can also get stuck in your crawl space and die, which causes a sewage-like odor.

Yes, it’s worth it to repair a crawl space foundation, even if the issue seems relatively minor. Foundation problems often get worse and more expensive to fix if you leave them untreated. Additionally, your entire home, from the framing and flooring to the roof system, relies on the foundation for even and level support. Issues with your foundation will almost always manifest as problems in and above your living space, so it’s important to find a solution.

Yes, barndominiums can have basements. Barndominiums are typically built over concrete slabs, so barndo basements are not very common. However, it is possible to include a basement in a barndominium blueprint as long as you’re building completely from scratch. Barndos can have the same types of basements as traditional homes, including full or walk-out basements.

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.

In most cases, it is safe to live in a home with minor foundation problems, but you should not let the issues persist. Virtually all foundations have small cracks from normal settlement, which are not a structural concern but should be sealed to prevent water intrusion. However, major damage—such as large structural cracks, sinking foundations, or bulging walls—can make a home unsafe. Other issues that can pose safety and health risks include poor indoor air quality from mold or pests, uneven floors, and rotten beams or joists. It is always best to have a foundation repair expert or structural engineer inspect any issues to determine if your home is safe to live in.

The Norwalk, CT homeowners’ guide to basement waterproofing services

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