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
ThermalDry® Elite Plank Flooring
Sunhouse Window Wells
Everlast Window Replacement
Rockwell Basement Egress Windows


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

Innovative Wet Basement & Crawl Space Waterproofing Company in East Lyme, CT

I never heard of you before then saw you at a home show....
Happy Customers Surrounding East Lyme, CT
Work Requests

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Reviews From East Lyme
Testimonials From East Lyme
Ailton has been here many times and he is a very good man.
Testimonial by Robert R. from East Lyme, CT
All the guys we dealt with from start to finish (Matt Kraus, Dan Medina, Blake and Chris and Thomas Connolly-...
Testimonial by Dan L. from East Lyme, CT

East Lyme, 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 East Lyme:

  • 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 East Lyme and areas nearby!

Trusted basement waterproofing company serving East Lyme

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 East Lyme:

  • 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 East Lyme homeowners - this includes sump pumps, basement dehumidifiers, french drains, and more. Schedule a free basement waterproofing estimate to learn more!

Transform your home with basement finishing in East Lyme

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 East Lyme:

  • 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 East Lyme and areas nearby.

Permanent foundation repair solutions in East Lyme

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 East Lyme:

  • 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 East Lyme and areas nearby.

Reliable crawl repair & encapsulation services in East Lyme

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 East Lyme:

  • 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 East Lyme 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 East Lyme - 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 East Lyme and nearby areas.

Work Requests From East Lyme, CT
Project Location: East Lyme, CT
Experiencing condensation in supply duct to 2nd floor when AC is running. Water had built up above drywall ceiling in a portion of my basement, which I tore out to drain. Looking to have moldy wood and insulation removed, duct issue fixed so leaking doesn't occur, and ceiling restored.
Project Location: East Lyme, CT
Looking to expand finishing our basement but also need waterproofing done as well
Project Location: East Lyme, CT
Grage slab (20'x24') cracked (3 major areas). Settled in center about 4-6" max. Water runs in during heavy rain from under garage door due to settling. Previous owners (family) said settling happened few years after initial construction (1976) and has not settled any further since. Would be curious if polyjacking is the right solution to level slab.
Project Location: East Lyme, CT
Leak/crack in garage/basement
Project Location: East Lyme, CT
Va loan for home purchase is requiring a foundation wall crack to be resealed (exterior and interior) before closing.
Project Location: East Lyme, CT
I'm considering buying a house that at 1 time or another had a substantial amount of water in the basement and I was wondering how much it would cost I should have would cost to seal and waterproof about and waterproof about 1400 ft² of basement
Project Location: East Lyme, CT
Possible Mold remediation needed in basement
Project Location: East Lyme, CT
Have an unfurnished basement- 1/3 with cement-2/3 raised dirt crawl space-tall enough to stand and bend-with ceiling insulation-no actual ceiling. Most interested in having some kind of sealant over the dirt and a solution to the ceiling insulation-, which constantly falls down. There is no access to the basement from inside the house- Entry only through the bulkhead -at the side of the house. thanks, Steve
Project Location: East Lyme, CT
We have two cracks in our foundation that we would like to be repaired. Both cracks are vertical from the floor to the sill. The larger of the cracks grows as it transitions vertically to about 1/8th of an inch. This one has seepage during long rain storms.
Project Location: East Lyme, CT
Small water leakage into the basement from wall cracks. Not a lot of water, first time in 5 years.
Project Location: East Lyme, CT
Need electric sump pump installed
Project Location: East Lyme, CT
Water coming in from a leak after I had gotten an outdoor concrete stamped patio
Project Location: East Lyme, CT
Our house is set low and is musty and damp. We also need to replace the sump pump ASAP, it is outdated and I feel it's going to give out any day.
Project Location: East Lyme, CT
Want to finish my basement
Project Location: East Lyme, CT
We just had a major leak in the basement the ceiling has to go the carpeting is coming out and we need to check the walls. At the very least were interested in putting down your system on the cement floor and putting a new surface of some sort on top.
Project Location: East Lyme, CT
Water in basement, half finished
Project Location: East Lyme, CT
Water seeping in at the floor and wall intersect. First time we've had water in 15 years
Project Location: East Lyme, CT
Never had water in basement until this week. There were around 7 areas i n the basement where it leaked between foundation wall and floor.
Project Location: East Lyme, CT
Vertical crack in basement wall actively leaking every time it rains
Project Location: East Lyme, CT
We want to know how much it would be to turn our unfinished basement into a living area with bathroom.