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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 Dehumidifier
Basement Insulation
Sump Pump Installation, Repair & Replacement
Aspen Air Purifier
Crawl Space Repair Services & Products
CleanSpace Encapsulation Vapor Barriers and Liners
Turtle Access Hatch
EverLast Crawl Space Doors
SaniDry CSB 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 Products & Services
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
Mudjacking & Slab Jacking Alternatives
EZ Post Deck Repair
Sidewalk Leveling & Repair
Patio Leveling & Repair
Pool Deck Repair
Shotcrete Wall Restoration
Radon Removal & Mitigation
Radon Test Kits
Radon Detection
Radon Abatement
Radon Mitigation System
Concrete Repair Services & Products
PolyLevel Concrete Lifting & Leveling
NexusPro Cracked Concrete Repair
Interior Slab Leveling
Commercial Concrete Repair
Concrete Pool Deck Repair
Concrete Sidewalk Repair
Concrete Walkway Repair

Your Dependable Cornwall, NY Basement Waterproofing & Foundation Repair Company

Your entire team from Jack to your installation crew were great....
Happy Customers Surrounding Cornwall, NY
Work Requests

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Reviews From Cornwall
Testimonials From Cornwall
Thanks again for a job well done.
Testimonial by Christine M. from Cornwall, NY

Basement Waterproofing & Crawl Space Repair in Cornwall, New York

Wet basements and crawl spaces create an unhealthy environment breeding mold and musty odors and leading to rot and structural issues. As specialists, we are here to help with trained experts and a range of patented and proven waterproofing solutions.

We know from experience that homes in Cornwall can benefit from a high-performing sump pump and dehumidifier. Some homeowners need a basement drainage system or crawl space encapsulation with a CleanSpace vapor barrier. Each solution we propose is tailored to the homeowner's needs with the goal of creating a dry, healthy and comfortable below-grade space in your home.

Why Choose Us?
  • Lifetime Warranty on all Perimeter Waterproofing Systems
  • 25-year Warranty on Crawl Space Encapsulation Systems
  • Sump Pump Installation, Repair & Replacement
  • Basement, Crawl Space & Spray Foam Insulation
  • Crawl Space & Basement Dehumidifiers
  • Hundreds of Satisfied Customers

Structural & Foundation Repair in Cornwall

Cracks in interior walls or the exterior of your home, tilting chimneys and floor cracks are signs of foundation problems. We feel it's important to fix foundation issues to protect your Cornwall home’s value and avoid any safety issues. Our in-house team of structural and geo-technical engineers can design the right solution for your home and are usually able to complete an installation in less than a week. We offer a 25-year written warranty against defects on our foundation products, which means you'll end up with a stable foundation and peace of mind!

We Fix
  • Bowing Walls
  • Sagging Floors
  • Stair-Step Cracks
  • Tilting Chimneys  
  • Foundation Cracks
  • Garage Slabs   
We Use
  • Wall Anchors
  • Slab Piers
  • I-Beam Wall Braces
  • Helical Deck Piers
  • Sticking Windows
  • Underpinning

Concrete Leveling & Concrete Crack Repair Company

Uneven concrete, whether in walkways, patios or concrete driveways, can be an eyesore and a tripping hazard. It's not easy to find a quick, easy solution. We're happy to say that we provide residential concrete repair solutions to Cornwall homeowners that are minimally disruptive and superior to other methods!

We highly recommend PolyLevel┬«, a superior polyurethane foam solution. To create a level concrete surface, we drill small holes in the concrete, inject the foam which then expands to lift the concrete. We find homeowners prefer this to mudjacking (or slab jacking), which is heavier, requires drilling larger holes and does not last as long as PolyLevel┬«. Call us today to learn more!

We also provide durable cracked concrete repair with NexusPro, a flexible concrete sealant that restores cracks and joints. This state-of-the-art solution is resistant to seasonal weather, fluctuating temperatures, and more, assuring your concrete looks good as new for life. Contact us today to learn how this year-round concrete crack solutions works!

We Fix
  • Cracked Driveways
  • Uneven Patios
  • Sinking Sidewalks      

  • Uneven Concrete
  • Sunken Pool Decks
  • Highway & Commercial Issues

Radon Test Kits & Radon Mitigation Systems in Cornwall

Are you spending time worrying that invisible radon gas is seeping into your home? Find out and take action! We provide homeowners in Cornwall, NY with radon test kits and FREE quotes for radon mitigation systems.


Job Stories From Cornwall, NY
Waterproofing a Foundation For Olympia Development - Cornwall, NY

Basement Systems was contacted to waterproof a new builds foundation in a quick time frame to make sure that the project stayed on pace to be completed in the developers' time frame.

We were contacted to waterproof the foundation of this new build based on our previous work with them, as well with other clients that we had done work for. Because of how experienced our crews are we were able to waterproof the foundation with Rub-R-Wall within half the time they had allocated for the project. Because of this, they were extremely happy that they could stay on track and even be a bit ahead of schedule. 

Work Requests From Cornwall, NY
Project Location: Cornwall, NY
When it's rains very hard for hours, my sump pump over flows water and floods my basement
Project Location: Cornwall, NY
Sump pump install in basement
Project Location: Cornwall, NY
Basements mold remediation and waterproofing
Project Location: Cornwall, NY
Old basement slab without drain. Leaks during heavy rain - 3 inches of standing water. Have Generac backup power supply.
Project Location: Cornwall, NY
Water weeping thru cinder block foundation
Project Location: Cornwall, NY
Have a void developing under a concrete patio looking to have filled before it becomes a larger issue.
Project Location: Cornwall, NY
Possible french drain installed. Small crawl space in basement has about 6 inches of water in it. Open to multiple possible solutions. Available for estimate this Friday, all day.
Project Location: Cornwall, NY
Seal floor, sump pump, perimeter drain? Flooding twice a year
Project Location: Cornwall, NY
My foundation suffered structural damage as a result of Hurricane Ida - I now have a lot of cracks, holes at the very top of my foundation where it meets my house - now every time it rains water seeps in due to these cracks, etc, Additionally, a portion of pipe from my sump pump has collapsed outside - underneath my slate walkway between my house and garage.
Project Location: Cornwall, NY
Water coming in thru the bilco door seem and bolts. not a crazy amount but enough to cause a problem.
Project Location: Cornwall, NY
We have some old concrete around our pool we are thinking of leveling/fixing.
Project Location: Cornwall, NY
Looking into new concrete floors in the basement, additionally looking to seal some cracks/holes in walls where water gets in
Project Location: Cornwall, NY
Small amount of water entering basement
Project Location: Cornwall, NY
Looks like I have water in my crawl space
Project Location: Cornwall, NY
Hi-I had a home inspection done and there is moisture in the crawl space which has created wet insulation. I need someone to assess the situation. Thank you!
Project Location: Cornwall, NY
Basement foundation repair cracks present.
Project Location: Cornwall, NY
Basement egress window installed in an already finished basement.
Project Location: Cornwall, NY
Sump pumps (one AC and one DC) could not keep up with water entering the sump during this past Christmas storm. Fire Department provided two portable pumps to work with the installed sump pumps to remove the water. Need a backup to the two sump pumps. Would also prefer to install a dehumidifier as well.
Project Location: Cornwall, NY
Hi there. We recently have been experience a little water in our back basement. Essentially, we have 2 basements, the original, and then with the extension, a back basement. That back basement is essentially the one that experiences some water every now and again. We do have sump pumps in both basements, one connecting to another which is strange. It has been dry as of recently (knock on wood) and we do have dehumidifiers in both basements. A little older but they do still work. We are really just looking to see a price, what we may need, etc. I can send you pictures if you need with covid and everything going on. We are located in Cornwall. If the price is reasonable, we may be willing to do it relatively soon, otherwise, we were going to wait until after our wedding in October to do. Thanks!
Project Location: Cornwall, NY
Radon Mitigation System

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