*The Angi rating for Basement Waterproofing companies in Bethlehem, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
*The HomeAdvisor rating for Basement Waterproofing companies in Bethlehem, CT is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.
Last update on March 14, 2026
Serving Bethlehem, CT and surrounding areas
Approved
In business since 1997
Free estimates
Credit card accepted
"I had my basement waterproofed almost 3 years ago by them and I had no issues since then with the basement flooding regardless of how much it rains. I highly recommend using American Dry Basement!"
+7
Serving Bethlehem, CT and surrounding areas
Approved
In business since 1987
Free estimates
Warranties offered
"the product was excellently done. I am a contractor and I needed the job done quickly to get it on the market. they finished it in one day and left the cellar cleaner than when they came.arrtco llc James stablein project manager t t"
+13
Serving Bethlehem, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2005
Free estimates
Emergency services offered
"Came to finish digging out trench to install footing drains around basement area of house. The guys finished the job in 1 day. So far no leaks into basement."
Serving Bethlehem, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2006
Free estimates
Emergency services offered
"Very friendly guys. They were understanding and worked with me and my partner for budgeting and getting our basement waterproof."
+37
Serving Bethlehem, CT and surrounding areas
Approved
In business since 2013
Free estimates
Warranties offered
"James came to my home and look at my pool cement project to replace and add new and gave me a awesome price that also I was able to do a cement slab for my kaziboo i strongly recommend them did the project on time and keep me updated on everything and clean after them self from start to finish."
+5
Serving Bethlehem, CT and surrounding areas
Approved (Corporate)
Super Service Award Winner
In business since 2025
Free estimates
Warranties offered
"Chuck, Alex and Naki did a great job. Lots of attention to detail. Walked me me the whole process so I would feel comfortable"
+16
Serving Bethlehem, CT and surrounding areas
Approved
Super Service Award Winner
In business since 2025
Free estimates
Emergency services offered
"Nick was always very responsive and available whenever we needed him. He showed up on time, tackled every challenge with persistence, and maintained a positive attitude throughout the job. His reliability and dedication really stood out. Highly recommend!"
Serving Bethlehem, CT and surrounding areas
Approved
In business since 1994
Free estimates
Emergency services offered
"He was on time, friendly, and honest. We had a plumber tell us that the pipe was broken at the septic tank so Phil and Mike came out to dig it up and replace it. When he dug it up he found that the pipe was not broken and was totally honest about it and gave us options and help that solved our issue we were having. I would totally use him again for any work I need done in the future."
+61
Serving Bethlehem, CT and surrounding areas
Approved
In business since 1955
Free estimates
Small jobs welcome
Welcome to Thomas Gianni & Sons, Inc. We are a family owned General Building Contractors serving the Greater Waterbury Connecticut area since 1955. Our service includes all kinds of remodeling, renovations, and services work of residential, commercial and industrial properties. We are fully insured and certified. Our quick and responsive service and our dedicated personnel are ready to serve your needs with complete satisfaction. Visit our website for more information on what we can do to improve or fix your home or business! http://www.tgianni.com
+5
Serving Bethlehem, CT and surrounding areas
Approved
Free estimates
Credit card accepted
Offers commercial services
We pride our company on reliability, great communication, \nintegrity, and quality work. We are experts in our trade and will do our best \nto keep you as educated as we can on your particular task or project. \nWe look forward to earning your business!\n\n
Due to the nature of basements, some level of waterproofing is necessary to prevent water from seeping in and causing damage. Some definitive signs that your basement needs waterproofing measures or needs existing waterproofing measures need to be updated include:
Water in your basement, including damp walls or puddles on the floor
Mold spots in your basement
Musty smells or odors
Warped doors or walls
Cracks in walls
Insect issues, such as cockroaches and termites
You can DIY basement waterproofing in some ways to help save on the overall costs. If your basement isn’t experiencing a lot of water but is noticeably humid, you can try running a dehumidifier that will pull the excess water out of the air. If you notice water leaking due to outdoor drainage issues, you can add downspout extensions to keep rainwater away from your home.
However, if the problem is more severe and requires a more extensive solution, it’s best to call a basement waterproofing professional to assess the treatment you need and install waterproofing safeguards properly. Since keeping water out of your basement is important, ensuring this job is done correctly the first time is best.
Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.
Several factors dictate if you should waterproof the interior or exterior of your basement. Waterproofing the exterior of your home is a great option if you use your basement for storage, as it provides the most protection from water and water damage. If you prefer work done outside of your home versus inside, exterior waterproofing is best for you. However, interior waterproofing is often less expensive since the area is easier to reach and requires less labor.
The cost of basement waterproofing is $4,950 for the average homeowner. However, you could end up paying between $600 and $14,000, depending on factors like basement size, waterproofing method, and the region you live in.
If you live in an area with heavy rainfall, you might be paying more for waterproofing than if you lived somewhere drier since waterproofing contractors would be in high demand. Likewise, a 500-foot basement costs between $2,500 and $5,000 to waterproof, but that price rises significantly for a larger basement.
From average costs to expert advice, get all the answers you need to get your job done.
Need to fix basement water problems or safeguard your home from damage in the future? Use this basement waterproofing cost guide to budget appropriately.
An unfinished basement has a lot of potential for a family room or guest suite. So how much does it cost to finish a basement? Read on for all cost factors.
Dealing with a damp basement? Follow these steps for DIY basement waterproofing to keep water and moisture out and boost your home’s energy efficiency.
Struggling with a damp basement? Learn about basement waterproofing and how these tips can help keep your basement safe from the elements.
Can’t seem to get rid of the moisture and mold in your basement? Learn why basements tend to hold moisture and how to get rid of moisture in the basement.
Unearth the root causes of water seepage in your basement floor. Explore effective solutions to keep your basement dry and your home protected.
