Serving Connecticut, Westchester and Putnam Counties

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Products & Services
Basement Waterproofing Services & Products
WaterGuard Interior System
DryTrak Drainage Channel
TrenchDrain Drain Grate
IceGuard Discharge Line
FlexiSpan Wall Crack Repair
Polyurethane Crack Sealing
WellDuct Window Drainage
BrightWall Waterproof Panels
ThermalDry Wall Barrier
Basement To Beautiful Pre-finishing Wall Insulation Panels
Drain Tile Installation
SuperSump Pump System
TripleSafe Pumping System
UltraSump Battery Back Up
Sanidry Basement Dehumidifier
French Drain Alternatives


Crawl Space Repair Services & Products
CleanSpace Encapsulation Vapor Barriers And Liners
Turtl Access Hatch
EverLast Crawl Space Doors
Sanidry Csb Crawl Space Dehumidifier
SmartDrain Water Drainage
SilverGlo Wall Insulation
TerraBlock Floor Insulation
SmartSump Sump Pump
Crawl-o-Sphere Crawl Space Fan
WallCap Block Wall Sealer
SmartVent Flood Vents


Foundation Repair Services & Products
Push Pier Underpinning For Settlement, Foundation Leveling, Sinking Foundation Repair
Geo-lock Wall Anchors
Geo-lock Helical Anchors
PowerBrace Bowed Wall Repair
CarbonArmor Fiber Wall Repair
SmartJack Crawl Space Support
Slab Pier Repair
Foundation Underpinning
EZ Post Deck Repair
Shotcrete Wall Restoration


Basement Finishing & Remodeling
Everlast Wall Panels
Insulated Wall Panels
Premier And Linen Ceiling Tiles: No-sag Warranty
Thermal Dry Floor Tiles
Sunhouse Window Wells
Everlast Window Replacement
Rockwell Basement Egress Windows


Before and After Pictures from Danbury
EverLast Basement Windows in Danbury, CT

EverLast Basement Windows in Danbury, CT

Before After
EverLast Basement Windows in Danbury, CT EverLast Basement Windows in Danbury, CT

Before, this Danbury, CT home had basement windows that caused a draft, were filled with debris and just unappealing. The homeowner wanted efficient windows that also had an appealing look for her Cape Cod home. She knew the experts at Connecticut Basement Systems would be able to help.

Our Sales Representative, Doug, was able to show the homeowner the features of our EverLast window inserts and SunHouse window well. These basement windows will not rust or rot because they’re built with reinforced vinyl frames. Plus, they feature a double-pane, insulated glass to prevent major heat loss. The SunHouse window wells are durable, prevents weeds from growing with its solid base, and its light color and curved form directs sunlight into the basement!  The homeowner loved these solutions and with these simple upgrades, she was thrilled with her efficient and beautiful basement windows and window wells!

Company Awards
2017 Angie's List Super Service Award
Connecticut Basement Systems has been awarded the 2017 Angie's List Super Service Award®! The Angie’s List Super Service Award honors... [Read more]
Larry Janesky award the Valley of Chamber of Commerce's Silver Medal Award
Larry Janesky was awarded the Valley Chamber of Commerce's Silver Medal Award for the Big Build at Ansonia Nature Center!... [Read more]
Best Places to Work
For the 3rd time, Basement Systems has won the Best Places to Work award for being one of the best... [Read more]
More Awards

Your Local Danbury, CT Foundation Repair & Basement Waterproofing Experts

Absolutely! Each of them were friendly and professional throughout the whole process. They made us feel confident and secure about...
Happy Customers Surrounding Danbury, CT
Work Requests

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Reviews From Danbury
Testimonials From Danbury
No other solution or provider has included a warranty for the life of the house.
Testimonial by Thomas/Eileen C. from Danbury, CT
Very happy with Bruce and we want him back next year!
Testimonial by Roland F. from Danbury, CT
I was very impressed by Prince's knowledge and ability!
Testimonial by Jerry S. from Danbury, CT

Danbury, CT's expert in basement waterproofing, foundation repair, & more

Connecticut Basement Systems has been your trusted home improvement company providing reliable basement waterproofing, foundation repair, crawl space encapsulation, basement finishing, and more to over 85,000 Connecticut homeowners since 1987. As a three-time winner of the CT Better Business Bureau's Torch Award for Marketplace Ethics, we are committed to creating an honest and reliable experience with our customers.

Whether you need a moisture-proof basement waterproofing system complete with a sump pump or permanent foundation settlement repairs, we provide these solutions and much more!

Our services in Danbury:

  • Basement waterproofing
  • Foundation repair
  • Crawl space repair
  • Basement finishing
  • Air purifiers
  • And more!

Schedule a free estimate to learn more. Connecticut Basement Systems proudly serves Danbury and areas nearby!

Trusted basement waterproofing company serving Danbury

A wet basement can affect your home more than you think. If left to worsen, water in the basement can cause structural issues, mold growth, pest problems, and more. That is why Connecticut Basement Systems provides patented basement waterproofing solutions, designed to keep your below-grade space dry and healthy for years to come! So, if you're tired of dealing with basement flooding, high humidity, water in basement, or other waterproofing issues, contact our experts today!

Our basement waterproofing services in Danbury:

  • Sump pump installation & maintenance
  • Basement drainage systems
  • Basement Dehumidifiers
  • Basement windows
  • Egress windows & window wells
  • And more!

Since 1987, we have provided warrantied basement waterproofing solutions to Danbury homeowners - this includes sump pumps, basement dehumidifiers, french drains, and more. Schedule a free basement waterproofing estimate to learn more!

Permanent foundation repair solutions in Danbury

No matter how minor your home's foundation problem seems, it is always better to schedule a foundation inspection and get repairs sooner than later. That is because issues like foundation settlement, leaning chimneys, bowing walls, and more can affect your house's value and curb appeal. Even worse, they can create unsafe living conditions for you and your family.

But there is no reason to worry - Connecticut Basement Systems is backed by Supportworks, a nationally renowned network of expert foundation repair contractors. This partnership also gives us exclusive access to professional training, warrantied solutions, and best practices proven by hundreds of dealers across the globe.

Our foundation repair services in Danbury:

  • Slab piers
  • Push piers
  • Helical piers
  • Foundation wall repairs
  • Crawl space support jacks
  • Wall anchors
  • Wall reinforcing systems
  • And more!

Schedule a free foundation repair estimate to learn more. We proudly serve Danbury and areas nearby.

Reliable crawl repair & encapsulation services in Danbury

A nasty crawl space can cause a lot of issues for the home. If left unrepaired and unsealed, the crawl space can start to rot and grow mold, leading to structural issues, unhealthy indoor air, and discomfort throughout the house. That is why Connecticut Basement Systems provides moisture-proof crawl space encapsulations and durable structural repairs.

When we seal the crawl space using a moisture-proof vapor barrier, add a high-performance crawl space dehumidifier, install crawl space jacks for failing support posts, and provide other crawl space repair solutions, we can create a dry, secure below-grade space for years to come!

Our crawl space encapsulation & repair services in Danbury:

  • Crawl space vapor barrier
  • Crawl space drainage system
  • Crawl space dehumidifier
  • Crawl space insulation
  • Crawl space support jacks
  • And more!

Schedule a free crawl space repair and encapsulation estimate to learn more. We proudly serve Danbury and areas nearby.

Transform your home with basement finishing in Danbury

Want to transform your dreary basement into the space of your dreams? From a lavish apartment to a new play area for the kids, Connecticut Basement Systems can help you with these remodeling projects and more - the only limit is your imagination! Unlike other basement finishing contractors, we actually use remodeling products designed to withstand common environmental conditions in the below-grade space, including moisture and mold. Plus, the basement finishing system is warrantied, has insulating qualities, dampens noise, and is eco-friendly.

Our basement finishing system in Danbury:

  • Finished basement flooring
  • Waterproof wall products
  • Ceiling tiles
  • Basement dehumidifiers
  • Replacement windows
  • Egress windows & window wells
  • And more!

Schedule a free basement finishing estimate to learn more. We proudly serve Danbury and areas nearby.

Quality basement waterproofing, crawl space repairs, & more since 1987

Connecticut Basement Systems is the largest basement waterproofing, foundation repair, crawl space encapsulation, and basement finishing company in Danbury - and for good reason. We are committed to improving the lives of our employees, customers, and the world through education and development. For over 30 years, we have built a solid reputation backed by honesty and expertise. So you can have absolute confidence in our services!

Contact us to schedule a free estimate today. We proudly serve Danbury and nearby areas.

Case Studies From Danbury
This Danbury basement was wet, dirty and reeked of mold. The homeowner wanted a solution to prevent water from entering his basement every time it...
In a house located in Danbury, Connecticut, there was a homeowner who was displeased with the condition and look of her basement windows. She noticed...
Job Stories From Danbury, CT
Waterproofing in Danbury, CT

The Toll Brothers Company in Danbury, CT was experiencing a wet basement. Luckily, the owner knew of our waterproofing Specialist, Rick Raucci and contacted him for a free no obligation estimate. He arrived at the property to assess the problem and determine what would be the best solution to waterproof their basement. He decided that it would be best to install our WaterGuard drainage piping system along with the WaterGuard Port. 


With a prepared plan Jose Blees and his production team got to work. They installed the WaterGuard system which is installed inside the perimeter of the basement to prevent wall and floor seepage before it reaches the basement floor. They also installed the WaterGuard Port which supports the WaterGuard system and is easy to use for inspection. 

The Toll Brothers were satisfied with the work completed and with now their dry basement. They were so pleased that they continue to use CT Basement Systems for various other jobs.


WaterGuard System in Danbury, CT

These Danbury homeowners were tired of experiencing a wet basement every time it rained. They were seeking a solution to keep their basement dry all year long. After researching for the best solution for their basement, they decided to give Connecticut Basement Systems a call to set an appointment for a free home evaluation estimation.

Our System Design Specialist, Leonard Fletcher, arrived at the home and evaluated the basement. He concluded that the WaterGuard system would give a solution these homeowners were looking for. Once the proposal was approved, Sid Aviz, and his production team installed the system professionally and efficiently. 

The WaterGuard is a drainage channel that leads water coming into the basement to the sump pump, where it is driven out of the home. Basement waterproofing is our specialty, so we were confident that this system would keep this Danbury basement dry all year long. Now, these homeowners are happy with their waterproof basement! 

Waterproofing and Refinishing Your Danbury, CT Basement

Tom and Maria C. had been thinking about waterproofing and finishing their basement for some time. When they were finally ready to take that step to improve and expand the living space in their home, they reached out to Connecticut Basement Systems. Waterproofing specialist Brad Glazer sat down with the couple to design a plan to keep water out and totally transform their unfinished basement.

Sid Avis and his crew arrived at the Danbury home soon after, installing a Waterguard interior drainage system, an exterior discharge line, a TripleSafe sump pump, and an IceGuard system. Once their basement was completely waterproofed, the crew was able to quickly put in a brand new ceiling, doors, walls, and the ThermalDry flooring.

After the work was complete, Tom and Maria had a beautiful new space for family and friends to hang out in. They also had a lifetime warranty, giving them peace of mind that Connecticut Basement Systems will be there for them in the future if ever needed.

Repair Cracks Before Selling Your Home in Danbury, CT

Ralph N. was getting ready to sell his home in Danbury when he noticed a sizeable crack in the basement wall. Knowing that a new homeowner doesn’t want walk into a set of problems, he contacted Connecticut Basement Systems online. Two days later, Ron Marra was at Ralph’s home and knew just how to solve the issue before it worsened.

Ron brought in foreman Justin Vizzard, who used the FlexiSpan Foundation Wall Crack Repair System to seal it up in a few short hours. If Ralph had decided to leave it untreated, the new homeowner could have encountered everything from unwanted water seeping in to the wall breaking down even further over time. He was very happy with the work done by Connecticut Basement Systems and could rest assured he was turning over the house in good, safe 

BrightWall Waterproofs and Brightens Your Danbury, CT Basement

No one knows more about the quality that needs to go into a home improvement project than a contractor himself, which is why when Bill S. encountered water in his basement, he knew the company to call was Connecticut Basement Systems. Waterproofing specialist Glenn Kerpchar visited Bill at his Danbury home to look at the best way to keep his basement dry.

With Glenn’s recommendations, Sid Avis and his crew installed a Waterguard interior drainage system, a SuperSump sump pump and an IceGuard system, as well as a Lawnscape outlet in the yard. They also put up BrightWall basement wall paneling, since coating it with paint or sealers is not a solution that will last. It not only brightened up the room, but now drains water and stops water vapor from sneaking in. On top of the fact that Bill’s basement will no longer take in water, the overall appearance of the room itself was significantly improved.

Work Requests From Danbury, CT
Project Location: Danbury, CT
Water seepage in basement and garage.
Project Location: Danbury, CT
Flooded basement. Footing drain clogged. need help
Project Location: Danbury, CT
I am looking for my basement to be repaired, waterproofed, new basement windows and insulation
Project Location: Danbury, CT
Basement is wet, not flooded. Please advise
Project Location: Danbury, CT
Water coming into my garage and basement
Project Location: Danbury, CT
Basement drainage
Project Location: Danbury, CT
Water in basement.
Project Location: Danbury, CT
The basement has a history of water seeping in from heavy rain. There is possible mold. It's currently a finished basement but we are looking to remedy the leaking problems then waterproof and remodel the basement afterwards.
Project Location: Danbury, CT
Hi, We have some water issues and an entryway to the basement that fills with water during heavy rain. Would like to waterproof and design ideas to recreate the downstairs living space.Thank you
Project Location: Danbury, CT
We are looking for a quote to fully remodel the current basement. There are no bedrooms down there.
Project Location: Danbury, CT
Spots of cracking and gaps in foundation.
Project Location: Danbury, CT
My retainer wall is starting to lean a little bit and I would like some one to come and look at it.
Project Location: Danbury, CT
Front steps sinking
Project Location: Danbury, CT
Looking to get our basement finished while adding a bathroom as well
Project Location: Danbury, CT
Slight Chimney separation from house. Would like to evaluate having it stabilized as recommended by contractor.
Project Location: Danbury, CT
We have water leaking in the basement when it rains in two areas .
Project Location: Danbury, CT
CT basement spray foam my attic in March 2017. I need to remove that insulation to add supporting bean for my roof in order to install solar panels and then reinsulate the attic. So, could you please give me an estimate of how much that project would cost. Thanks.
Project Location: Danbury, CT
Finish my basement
Project Location: Danbury, CT
We had a hot water heater failure. Basement area got flooded as we were not home for a few days. We would like to remove molds and waterproof the area for future such issues. We would like to know the cost first and what are our options. It will be nice if we can meet for 15 minutes at my home.
Project Location: Danbury, CT
I need my basement some what finished and i also would want to have an appraisal on having a radon system installed