Alpha Basement Waterproofing Company in Connecticut
Alpha is a basement waterproofing company that has been serving Connecticut for many years. We fix foundation cracks, stop leaks cold, and keep water where it belongs, out of your home. We provide long-term basement waterproofing and foundation repair solutions, so you won’t have to worry about a damp basement.
We provide expert waterproofing solutions to protect your property from leaks, moisture, and water damage.
Our Basement Waterproofing Services in Connecticut
We offer professional basement waterproofing and foundation repair services across Connecticut. Whether you’re dealing with water seepage, foundation cracks, or moisture damage, our certified team delivers lasting solutions for residential and commercial properties.
Our services include interior and exterior basement waterproofing solutions, sump pump installation and repair, basement underpinning, and more. Before beginning any project, we complete an in-depth inspection to ensure we provide the best possible solution for your unique situation.

Basement Waterproofing (Interior & Exterior)
Leaks, damp walls, or standing water can ruin your basement over time. We create custom interior and exterior waterproofing systems that keep your basement dry and protect your home from mold, rot, and water damage.

Sump Pump System Installation & Repair
No sump pump, or one that’s broken can lead to basement flooding. We install strong, high-quality sump pumps and fix broken ones, so your basement stays dry even during heavy rain.

Foundation Crack Repair
Tiny cracks and exposed tie rod holes in your foundation are silent troublemakers. We professionally widen, clean, and seal each crack and hole with high-strength materials to block water intrusion and stop damage before it spreads.

Tie Rod Hole Leak Repair for Basement Walls
Tie rod holes are small spots in the basement walls where water can sneak inside. We seal these holes to keep your basement dry, protected, and safe in any weather.

Garage Floor Coating
We cover your garage floor with a strong, smooth layer that protects it from stains, chips, and water. This makes it last longer, look better, and stay easy to clean for Connecticut homeowners.

Basement Concrete Floor Coatings
We make your basement floor strong, smooth, and easy to clean. Our special coating keeps out water, stops dust, and makes your basement last longer.



About Alpha Basement Waterproofing
We are a hardworking team that’s been serving Connecticut communities for years, one basement at a time. Our team knows how local weather can cause basement problems, and we use the right solutions to protect your home long-term. Homeowners across Connecticut count on us for dependable, friendly, and expert service, backed by full licensing and insurance.

Only Proven Fixes That Last.
Before we touch a single tool, we inspect your space thoroughly. Our approach is precise, professional, and personal. Every basement has its own story and we write the happy ending.
We Waterproof & Rebuild Confidence
Ask our customers. They will tell you: We show up. We do it right. We don’t disappear. That’s why 5-star reviews follow us everywhere.
Our Customers Trust Us
Basement Waterproofing Near Me
Alpha Waterproofing | Basement Waterproofing CT – Foundation Repair, Crack Sealing, Sump Pumps, Leak Repair & Floor Coating 39 Google reviews James McCabe2025-08-07Trustindex verifies that the original source of the review is Google. We highly recommend Mario with Alpha Water Proofing. He set us up with a same day estimate that was very reasonable and the next day he repaired the cracks in our basement. They were always on time and the they did a great job and even cleaned up the all the work areas very nicely. Thanks guys! Jay Morgan2025-08-03Trustindex verifies that the original source of the review is Google. I had issues with water coming through the walls of my garage: they did a great job sealing that and also installed a sump pump to prevent any future issues. We recently had string of storms that I’m sure would have flooded the garage. I’m happy to report so far so good. Seth Dorsey2025-08-02Trustindex verifies that the original source of the review is Google. Highly recommend Alpha for anyone looking for reliable basement waterproofing solutions! Liza Aminova2025-07-26Trustindex verifies that the original source of the review is Google. They fixed the leaks, sealed the cracks, and now my basement stays completely dry—even during heavy rain. Highly recommend Alpha to anyone dealing with water issues in their basement! Gina Nemense2025-07-11Trustindex verifies that the original source of the review is Google. I recently hired Mario from Alpha Waterproofing Basement to repair a crack in my foundation, and I couldn’t be more pleased with their work. From the first call to the final follow-up, the team was prompt, professional, and incredibly efficient. They thoroughly assessed the issue, explained the repair process clearly, and got the job done quickly without cutting any corners. The results were excellent—the crack is completely sealed, and I feel confident that the foundation is now secure. It’s such a relief to know the problem was addressed correctly the first time. I highly recommend Alpha Waterproofing Basement to anyone in need of foundation repair. Reliable, responsive, and effective! Angela Malveaux2025-07-03Trustindex verifies that the original source of the review is Google. My garage was in bad shape chipped concrete, oil stains, and uneven patches. I hired Alpha Waterproofing Basement to apply a new epoxy coating, and I couldn’t be more thrilled with the results. The floor is now smooth, glossy, and looks incredible. It’s easy to clean and completely transform the space. I highly recommend this service if you want your garage to look new again. Adam Smith2025-06-24Trustindex verifies that the original source of the review is Google. Alpha Waterproofing team did a garage floor coating for us and it came out better than expected. Super smooth process from quote to finish. Would definitely use Alpha Waterproofing Basement again Ola McCall2025-06-24Trustindex verifies that the original source of the review is Google. Our basement had multiple leaks from tie rod holes and minor foundation cracks. We contacted Alpha Waterproofing Basement and were impressed from the first phone call. Mario and Dave assessed everything thoroughly and explained the solutions clearly. They repaired every problem area with care and expertise. The basement is now dry, fresh, and safe. You can tell this company takes pride in their craftsmanship. We’ve already referred them to two neighbors! Frances Laren2025-06-23Trustindex verifies that the original source of the review is Google. Fast response, great service! The team at Alpha Waterproofing Basement repaired a major crack in our foundation. No more water problems. Great work by them! Pete King2025-06-22Trustindex verifies that the original source of the review is Google. After several quotes, we went with Alpha Waterproofing Basement team and are so glad we did. The garage floor coating turned out perfect, and their attention to detail was impressive. Thank you!
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People Also Ask
How do I know if I need basement waterproofing?
If your basement smells musty, has damp walls, water stains, or puddles after rain, it’s time to call in a pro. We will inspect it for free and let you know what’s really going on.
Do you only work on finished basements?
Not at all. We waterproof finished, unfinished, and everything in between. We have the methods and equipment to keep it dry, whether it’s a finished living area or bare concrete.
What’s the best way to fix a foundation crack?
Every crack is different, but in most cases, we use high-grade injection materials or structural sealing techniques that stop water in its tracks and protect your foundation long-term.
Can a sump pump really stop my basement from flooding?
Absolutely, if it’s the right kind and properly installed. We install sump pump systems that are powerful, efficient, and built to handle Connecticut’s wild weather. And if yours isn’t working, we can repair or replace it fast.
How long does basement waterproofing take?
Most projects take 1–3 days, depending on the size of the basement and the type of system needed. We work fast, clean, and get it done right the first time.
How much does basement waterproofing cost in Connecticut?
Costs can vary depending on the problem, the size of your basement, and the solution required, but we always offer clear, upfront pricing with no surprises. And your inspection is 100% free.
Are your services covered by a warranty?
Yes, our work is backed by strong warranties, and we stand behind every job. If we waterproof your basement, we are here for the long haul.
Do you work year-round? Even in winter?
Yes, we provide basement waterproofing services in Connecticut year-round, because water problems don’t wait for spring. In fact, winter can reveal issues hidden in warmer months.