Serving Connecticut, Westchester and Putnam Counties

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A Free Estimate!
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 Derby
Basement Transformation in Derby, CT

Basement Transformation in Derby, CT

Before After
Basement Transformation in Derby, CT Basement Transformation in Derby, CT

This basement in Derby, CT was crowded, uninviting, and not a space the family felt comfortable using. They wanted to turn it into a space they could use year round, so they called Connecticut Basement Systems to get the job done.

Micah Smith came out to the home, and quickly surveyed what could be done to this space. He brought out Sheldon Lennon and his team, and they quickly got to work! They first air sealed the entire home with rim joist insulation. This insulation is important to keeping the basement warm, and it is an affordable option that is high coverage. They then installed ThermalDry floor tiles in sandstone gray. These tiles are a great option because they can snap together over concrete, and create a great thermal barrier, so your feet are never cold! We also installed Everlast wall panels around the entire basement. These panels are made of inorganic materials and great for the basement environment!

This basement completely transformed into a space this family can now use for whatever they please! Call us TODAY for your free basement finishing estimate!


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

Complete Crawl Space and Foundation Repair Services in Derby, CT

Very courteous and clean. Covered his boots and worked quietly. Very nice and respectful. Will request Dan O....
Happy Customers Surrounding Derby, CT
Work Requests

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Reviews From Derby
Testimonials From Derby
Phil was courteous, considerate and I love the service! I will request him in the future!
Testimonial by Joan M. from Derby, CT
Dear Larry Janesky, I wanted to personally thank you for assigning your service technician, Ailton Dos...
Testimonial by Heike H. from Derby, CT
Scott Perry and Mike did a fabulous job with the installation - very professional and knowledgeable about the...
Testimonial by Nancy B. from Derby, CT

Derby, 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 Derby:

  • 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 Derby and areas nearby!

Trusted basement waterproofing company serving Derby

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 Derby:

  • 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 Derby 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 Derby

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 Derby:

  • 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 Derby and areas nearby.

Reliable crawl repair & encapsulation services in Derby

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 Derby:

  • 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 Derby and areas nearby.

Transform your home with basement finishing in Derby

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 Derby:

  • 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 Derby 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 Derby - 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 Derby and nearby areas.

Job Stories From Derby, CT
Foundation Transformation in Derby, CT

Phyliss G. in Derby, CT was looking to fill the cracks in the walls of her home, as she was beginning to worry about guests seeing them when she invited them out! She gave us a call at Connecticut Basement Systems to help, and we were happy to find a solution!

Our System Design Specialist, Glen Kerpchar, came to help Phyliss with the solution she needed. Justin Vizard and his team came out, and injected a polyurethane foam into the cracks to make them disappear. By injecting this, we were able to make her walls look much more presentable, and we were able to make her feel comfortable when inviting guests into her home.

Call us today for your FREE estimate!

Work Requests From Derby, CT
Project Location: Derby, CT
Rain comes into basement
Project Location: Derby, CT
I live in a condo with a basement. No external access, only internal access from a single 30 inch door. Our basement is about 1,200-1,300 sqft and we'd like to have it finished with walls, insulation, and flooring. We like having utilities accessible so we'd like drop tile ceiling. We are looking to create 3 rooms, the rest would be open floor plan.
Project Location: Derby, CT
Refinish basement into more usable space
Project Location: Derby, CT
Recent basement flooding, looking for pricing on drainage systems.
Project Location: Derby, CT
The house is a two family home with a crawl space and would like to see if it can be somehow insulated to prevent possible freezing of pipes in the crawl space. Thank you,
Project Location: Derby, CT
Basement is damp and dusty. Looking to turn it into a bedroom.
Project Location: Derby, CT
Retaining wall is leaning and needs repointing
Project Location: Derby, CT
Needs basement waterproofing
Project Location: Derby, CT
Want to turn a small area into a finished area for storage and office.
Project Location: Derby, CT
Would like to get an estimate for my house basement
Project Location: Derby, CT
I would like to finish a basement
Project Location: Derby, CT
Hoping to get a quote on finishing our basement. It doesn't have water issues generally, but we've had ground water seep in one-two times over the past two years. Would like recommendations on waterproofing prior to finishing, and get a price for an entire job.
Project Location: Derby, CT
Wet basement
Project Location: Derby, CT
Tonight is the second time my finished basement has leaked water through what appears to be the seam on one side of the finished part of the basement.
Project Location: Derby, CT
Water coming thru cement in garage and storage area. Looking for estimate since I am getting little response from condo association and cannot keep crawling in storage area everytime it rains. Thank you.
Project Location: Derby, CT
Small leaks that will eventually amount to a lot of water. This only happens when it rains extremely hard. I used drylock. Helped a lot but just tired of the leaks and having to paint floors again.
Project Location: Derby, CT
Basement leaks when it rains and drains in front of garage.
Project Location: Derby, CT
I have flooding in basement and attached garage when it rains it doesn't matter if it rains a lot or little water seems to find it's way into the basement which later causes mold problems.
Project Location: Derby, CT
Selling my home and want to repair (3) vertical foundation cracks prior to home inspection.
Project Location: Derby, CT
Live in small ranch approx 950 Sq Ft. Looking to have half the basement finished (other half for utilities). Major items would be flooring solution, walls, ceiling, and sound proofing. Goal is to have partial entertainment space and partial band rehearsal space (be nice to neighbors). Also interested in adding a bath (up flow) so would like to know if that is something your team does as well. Look forward to hearing from you. Thanks!