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 Guilford
Water Heater

Water Heater

Before After
Water Heater Water Heater

This before and after photoset is from a home in Guilford, CT. The before photo shows the water heater without a drainage system. If water were to come in contact it could cause damage. In the after picture you can see the installed drainage system around this water heater is both cosmetically appealing and functional at the same time. 

Drainage System

Drainage System

Before After
Drainage System Drainage System

These before and after photos are from a basement at a home in Guilford, CT.  In the before photo the basement is not fitted with a drainage system so the basement was at risk for potential flooding. In the after picture you can see from the wet cement that our crew very neatly installed the WaterGuard drainage system to prevent flooding in the future. 

Sump pump installed in Guilford, CT

Sump pump installed in Guilford, CT

Before After
Sump pump installed in Guilford, CT Sump pump installed in Guilford, CT

This Guilford, CT basement had an old, exposed sump pump system that was in danger of clogging which would result in a flooded basement. We installed a new TripleSafe Sump Pump System to replace it which includes an airtight lid, primary pump, secondary pump, and battery backup sump pump.

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

Guilford, CT's Respected Crawl Space & Foundation Repair Pros

I'm 80 years old and i was having to remove water all by myself but since you installed your system...
Happy Customers Surrounding Guilford, CT
Work Requests

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Reviews From Guilford
Testimonials From Guilford
Dan was polite and curteous. I also appreciated that he was on time!
Testimonial by Sarah S. from Guilford, CT
Dan was polite and knew exactly what he was doing.
Testimonial by Joseph S. from North Haven, CT
I was ecstatic with Justin and his performance!
Testimonial by Neil S. from Guilford, CT

Guilford, 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 Guilford:

  • 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 Guilford and areas nearby!

Trusted basement waterproofing company serving Guilford

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 Guilford:

  • 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 Guilford 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 Guilford

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 Guilford:

  • 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 Guilford and areas nearby.

Reliable crawl repair & encapsulation services in Guilford

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 Guilford:

  • 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 Guilford and areas nearby.

Transform your home with basement finishing in Guilford

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 Guilford:

  • 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 Guilford 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 Guilford - 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 Guilford and nearby areas.

Job Stories From Guilford, CT
CleanSpace Encapsulation in Guilford, CT

This Guilford crawlspace was dirty and damp which can create an unhealthy environment.  The dampness in the crawlspace can support mold and moisture damage. These were concerns for the homeowner who wanted to make sure his crawlspace was a healthy environment. He did his research and decided to give Connecticut Basement Systems a call and scheduled an appointment.  

Taz Petersen was the Sales Representative who arrived at the home the day of the appointment. He inspected the crawlspace and explained the different solutions the homeowner had. Once a plan was set, a production date was scheduled and the homeowner was ready to have his crawlspace transformed.  

On the day of production, Garfield Sanderson and his production team began the installation process. A WaterGuard System was first installed to ensure that water would be properly channeled outside of the home. Then, a CleanSpace encapsulation was installed on the floors and walls to prevent any moisture from seeping through. Lastly, a Sanidry Sedona dehumidifier was installed to ensure that the crawlspace will stay dry.

With a dry, clean crawlspace, the home instantly transformed into a healthier environment. The homeowner is extremely happy with his crawlspace thanks to Connecticut Basement Systems!

Dirty and damp crawlspace? Give us a call at 1-855-200-7133 for your FREE estimate! 

A finished basement in Guilford, CT needed waterproofing

Martha H of Guilford, CT noticed her finished basement had wet spots in the carpeting. She realized that the wet finishing materials in her basement caused a potential mold problem and new she would have to do something about the situation before it got worse. After searching the web she found Larry Janesky's Connecticut Basement Systems and decided to have them come in for a free estimate to solve the water problem. 

Shortly after giving them a call, an appointment was set for Mike Fuschetto to come evaluate the basement. Mike decided that having Al Guglielmoni install a WaterGuard drainage system and a TripleSafe Sump Pump system would be the best bet to get rid of any water. WaterGuard is a drainage channel that will lead any water coming into the basement to the TripleSafe pump system, where it will be then pumped out of the home a safe distance away.

Michael also proposed the SaniDry Basement Air system for Martha's basement. The SaniDry can dehumidify and filter the air at the same time. It's ENERGY STAR® rating makes it three times more efficient than common hardware store dehumidifiers.

Martha has been very happy and having no issues with water coming into her basement. It's now a dry, moisture free space that is safe to refinish and enjoy for years to come.

Work Requests From Guilford, CT
Project Location: Guilford, CT
Looking to have our basement partially finished as a kids playroom
Project Location: Guilford, CT
Look to insulate and install vapor barrier on 12' x 12' crawl space
Project Location: Guilford, CT
Cracks in walls, many nails popping out and lines appearing in walls. These are different from the cracks, they look like seams or bowing lines in the middle of the wall.
Project Location: Guilford, CT
Hi! We have a basement crawl space we need to put down a moisture barrier in.
Project Location: Guilford, CT
We have some water issues we'd like to address. thanks!
Project Location: Guilford, CT
Moisture in basement
Project Location: Guilford, CT
We have water leaking into basement. Would like someone to look at this and get options for fixing it.
Project Location: Guilford, CT
Water in basement
Project Location: Guilford, CT
Require mold remediation, sump, waterproofing, dehumidification
Project Location: Guilford, CT
We get a small amount of water in the basement during heavy rains. There is some warping of baseboards which suggests there has been flooding prior to our purchasing the house. Wanting to re-carpet basement but do not want to do so until sure that the water issue is taken care of.
Project Location: Guilford, CT
Would like a quote on both the dehumidifier system and basement finishing.
Project Location: Guilford, CT
Looking to finish our basement. We just purchased it recently, but we believe it is a dry basement, but we do live in a bit of a wet ground area. Looking to have basement finished, with one room to be left unfinished for AC unit & such, otherwise, keeping the basement as one large room (possibly adding one half bathroom as well)
Project Location: Guilford, CT
Hello, I seemingly have a crack in my foundation that is leaking water into our basement. I am writing in inquire about the costs of filling the crack. Thanks!
Project Location: Guilford, CT
Purchasing the house. Mold issues, lots of moisture in basement. Need a moisture diversion plan.
Project Location: Guilford, CT
Concrete foundation wall crack repair
Project Location: Guilford, CT
Crawl space
Project Location: Guilford, CT
Looking for a quote on a battery pack for sump pump and a dehumidifier. Did some work two years ago looking to do some more before we finish the basement
Project Location: Guilford, CT
Puddling from cracks in wall with sustained rain or snow melt, and a rusting bilco door
Project Location: Guilford, CT
Wet basement
Project Location: Guilford, CT
Interested in cleaning out crawl space and considering a ventilation system to improve airflow.