Get matched with top basement waterproofing pros in South Windham, CT
There are 5 highly-rated local basement waterproofing pros.
TRUSTED BY HOMEOWNERS
4.8 
62 Verified Reviews for Basement Waterproofing pros in South Windham, CT
*The Angi rating for Basement Waterproofing companies in South Windham, 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 South Windham, 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 April 30, 2025
Basement waterproofing pros in South Windham
Groundworks is North America’s leading foundation repair and water management solutions company. Groundworks has been serving homeowners across the U.S. and Canada for decades, providing quality home repair solutions. Groundworks is a BBB-accredited business and a multi-time recipient of the Angi Super Service Award. Our 50-plus years of combined expertise brings Connecticut homeowners innovative solutions and industry-leading warranties to protect their biggest investment, their homes.
"Professional and efficient tech."
Mark R on April 2025
Groundworks is North America’s leading foundation repair and water management solutions company. Groundworks has been serving homeowners across the U.S. and Canada for decades, providing quality home repair solutions. Groundworks is a BBB-accredited business and a multi-time recipient of the Angi Super Service Award. Our 50-plus years of combined expertise brings Connecticut homeowners innovative solutions and industry-leading warranties to protect their biggest investment, their homes.
"Professional and efficient tech."
Mark R on April 2025
Connecticut Basement Systems is your trusted expert for basement waterproofing, crawl space repair, basement finishing, and foundation repair. Using patented, warrantied products, we provide permanent solutions for your home. Have a wet, flooded basement or crawl space? Tilted or bowing foundation walls? A basement you want to finish? We have a solution. We proudly serve homeowners and businesses all throughout Connecticut & Westchester County, NY. Call us today for a free inspection and no-obligation, estimate. Financing available. Additional phones - (203) 881-5090. Award winning.
"The visit to my home in West Hartford was a nice affair. The technician explained everything. He even mentioned that I had to get a plumber to remove the sink away from the wall, so the work could be done to repair the window and wall area, but I did not hear him mention that I had to pull permits. The problem with this permit pulling issue is that I never initiated the pulling of permits, and this also is a red flag for me. The pulling of a permit should always be done by the contractor who is doing the job. It ensures that the permit pulled is to code. It ensures that the permit pulled follows local ordinance and CT. laws and statutes regarding construction, and that also includes consumer protection mandates in the State of Connecticut. Having me pull the permit to allow the CT. Basement Systems to do the work is a big, red flag, and it can result in my home owner's policy being cancelled if the permits are pulled either after the fact, or the permits pulled do not line up with the inspection process. I can also be fined by the town for pulling permits after the fact too. I've had my furnace replaced. The plumbing company who replaced the furnace followed state law and guidelines. Especially, since funding provided through a loan from a Credit Union chosen by the State of Connecticut ensured that permits were pulled correctly, legally. The same applies to my roof being replaced. The roofing company pulled the permit. Having a customer whom you are charging in excess of $20,000 to pull a permit is putting that customer in legal jeopardy, which is unacceptable. If I sell my house, and I had the work done in my basement, and the permits were pulled by me. The person who bought my house could sue me for an incorrectly pulled permit. How would I answer questions from the town about the technical aspects of the job, which should be handled by the contractor directly? Why introduce another layer of bureaucracy that slows down communication? Have the contractor pull the permit, so that the contractor and the municipality, town or city can communicate directly, and the pulling of the permit is done correctly and legally. How would I know, when the town should be doing an inspection during or while the job is being completed or after the job is completed? This should never be a requirement of the customer to pull the permit for a job to be done. The tech who visited my home mentioned that I had to hire a plumber to move a basement sink, but they did not mention about pulling of permits, but I went and re-read the quote again, and it is at the bottom of the quote page under "Customer Will" that states not only hiring of the plumber but also pulling permits and scheduling inspections. I did not have this job financed by CT. Basement Systems. I, instead, decided to get a home equity loan. If I did not get the home equity loan, then decided to go with CT. Basement Systems financing, then I would be screwed. The best thing I did was slow the process down, seek my own financing, and ask larger, bigger, deeper questions that prevented me from making a mistake by allowing this work to be done."
Marcus L on August 2023
Connecticut Basement Systems is your trusted expert for basement waterproofing, crawl space repair, basement finishing, and foundation repair. Using patented, warrantied products, we provide permanent solutions for your home. Have a wet, flooded basement or crawl space? Tilted or bowing foundation walls? A basement you want to finish? We have a solution. We proudly serve homeowners and businesses all throughout Connecticut & Westchester County, NY. Call us today for a free inspection and no-obligation, estimate. Financing available. Additional phones - (203) 881-5090. Award winning.
"The visit to my home in West Hartford was a nice affair. The technician explained everything. He even mentioned that I had to get a plumber to remove the sink away from the wall, so the work could be done to repair the window and wall area, but I did not hear him mention that I had to pull permits. The problem with this permit pulling issue is that I never initiated the pulling of permits, and this also is a red flag for me. The pulling of a permit should always be done by the contractor who is doing the job. It ensures that the permit pulled is to code. It ensures that the permit pulled follows local ordinance and CT. laws and statutes regarding construction, and that also includes consumer protection mandates in the State of Connecticut. Having me pull the permit to allow the CT. Basement Systems to do the work is a big, red flag, and it can result in my home owner's policy being cancelled if the permits are pulled either after the fact, or the permits pulled do not line up with the inspection process. I can also be fined by the town for pulling permits after the fact too. I've had my furnace replaced. The plumbing company who replaced the furnace followed state law and guidelines. Especially, since funding provided through a loan from a Credit Union chosen by the State of Connecticut ensured that permits were pulled correctly, legally. The same applies to my roof being replaced. The roofing company pulled the permit. Having a customer whom you are charging in excess of $20,000 to pull a permit is putting that customer in legal jeopardy, which is unacceptable. If I sell my house, and I had the work done in my basement, and the permits were pulled by me. The person who bought my house could sue me for an incorrectly pulled permit. How would I answer questions from the town about the technical aspects of the job, which should be handled by the contractor directly? Why introduce another layer of bureaucracy that slows down communication? Have the contractor pull the permit, so that the contractor and the municipality, town or city can communicate directly, and the pulling of the permit is done correctly and legally. How would I know, when the town should be doing an inspection during or while the job is being completed or after the job is completed? This should never be a requirement of the customer to pull the permit for a job to be done. The tech who visited my home mentioned that I had to hire a plumber to move a basement sink, but they did not mention about pulling of permits, but I went and re-read the quote again, and it is at the bottom of the quote page under "Customer Will" that states not only hiring of the plumber but also pulling permits and scheduling inspections. I did not have this job financed by CT. Basement Systems. I, instead, decided to get a home equity loan. If I did not get the home equity loan, then decided to go with CT. Basement Systems financing, then I would be screwed. The best thing I did was slow the process down, seek my own financing, and ask larger, bigger, deeper questions that prevented me from making a mistake by allowing this work to be done."
Marcus L on August 2023
Better Business Bureau Accredited firm with an A+ Rating. 2017 Connecticut Better Business Bureau Marketplace Excellence Awards NOMINEE for SUPERIOR CUSTOMER SERVICE. Established in 1998, R.A.M. Contracting, Inc. is Robertson Michaud company specializing in Custom Projects. We are based in Connecticut and are one of the most highly regarded companies for our craftsmanship, attention to detail and customer service. Fully licensed, insured and bondable. We service Federal, Industrial, Commercial and Select Residential clientele. Registered with the United States Government Systems for Award Management (SAMS), State of Connecticut Department of Consumer Protection and Vermont Office Of Professional Regulation. We are an Environmental Protection Agency Lead Safe Certified Firm. Please provide details about your project in the Homeowner Description. Leads without any description will not be accepted. For more information please call us at 860-413-2263. We are available 7 days a week.
"Very responsive, clear and professional. Gave me information I needed and then some."
Vivian Z on July 2018
Better Business Bureau Accredited firm with an A+ Rating. 2017 Connecticut Better Business Bureau Marketplace Excellence Awards NOMINEE for SUPERIOR CUSTOMER SERVICE. Established in 1998, R.A.M. Contracting, Inc. is Robertson Michaud company specializing in Custom Projects. We are based in Connecticut and are one of the most highly regarded companies for our craftsmanship, attention to detail and customer service. Fully licensed, insured and bondable. We service Federal, Industrial, Commercial and Select Residential clientele. Registered with the United States Government Systems for Award Management (SAMS), State of Connecticut Department of Consumer Protection and Vermont Office Of Professional Regulation. We are an Environmental Protection Agency Lead Safe Certified Firm. Please provide details about your project in the Homeowner Description. Leads without any description will not be accepted. For more information please call us at 860-413-2263. We are available 7 days a week.
"Very responsive, clear and professional. Gave me information I needed and then some."
Vivian Z on July 2018
In an attempt to get back to all the people who have recently contacted us, we're providing email addresses of jen@easternwaterproofing.com and jon@easternwaterproofing.com. PLEASE USE EMAIL WHENEVER POSSIBLE! We have gotten inundated with phone calls and apologize that we may have not gotten back to you in a timely fashion, as normal. We pride ourselves on quick response times but the recent rains have caused an unprecedented backlog in calls to our office. We are doing our best to work through it. In the meantime, please, try emailing DESCRIBING YOUR ISSUE, your AVAILABILITY DURING A TYPICAL WEEK and YOUR NAME AND ADDRESS AND PHONE # AND SEND RELEVANT PICTURES, IF POSSIBLE! We will do our best to respond ASAP as we work through our call backlog. *If a requested appointment time is not confirmed through our office it is NOT scheduled with our team! Thank you for your patience and understanding!
"Everyone was really good to work with at the beginning of the waterproofing to the very end. No complains about the completed Job. I have yet to see the system work because we just have not had Heavy rain over a Long period of time."
Stephen M on July 2024
In an attempt to get back to all the people who have recently contacted us, we're providing email addresses of jen@easternwaterproofing.com and jon@easternwaterproofing.com. PLEASE USE EMAIL WHENEVER POSSIBLE! We have gotten inundated with phone calls and apologize that we may have not gotten back to you in a timely fashion, as normal. We pride ourselves on quick response times but the recent rains have caused an unprecedented backlog in calls to our office. We are doing our best to work through it. In the meantime, please, try emailing DESCRIBING YOUR ISSUE, your AVAILABILITY DURING A TYPICAL WEEK and YOUR NAME AND ADDRESS AND PHONE # AND SEND RELEVANT PICTURES, IF POSSIBLE! We will do our best to respond ASAP as we work through our call backlog. *If a requested appointment time is not confirmed through our office it is NOT scheduled with our team! Thank you for your patience and understanding!
"Everyone was really good to work with at the beginning of the waterproofing to the very end. No complains about the completed Job. I have yet to see the system work because we just have not had Heavy rain over a Long period of time."
Stephen M on July 2024
Budget Dry Waterproofing is a waterproofing company founded on the belief that quality home improvement work does not need to break the bank. We are dedicated to providing excellent service.
"Annual service on 2 sump pumps efficiently and expertly performed. Technician pointed out need for replacement of 1 pump, providing several estimates."
Randall K on April 2025
Budget Dry Waterproofing is a waterproofing company founded on the belief that quality home improvement work does not need to break the bank. We are dedicated to providing excellent service.
"Annual service on 2 sump pumps efficiently and expertly performed. Technician pointed out need for replacement of 1 pump, providing several estimates."
Randall K on April 2025
Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.
"Overall, working with the company was a good experience."
Marcy W on October 2024
Work completed by Connecticut Basement Systems, Inc., is warranted for lifetime of your home. Satisfaction is guaranteed and we assure prompt reply to all inquiries. Free estimates and financing are available. We've wowed over 30,000 customers since 1987. We have an A plus Better Business Bureau rating. Check us out for unbiased reviews and customer testimonials.
"Overall, working with the company was a good experience."
Marcy W on October 2024
At Connecticut Custom Creations™, we specialize in transforming kitchens, bathrooms, basements, and attics into beautiful, functional spaces tailored to your needs. We take great pride in helping people build their dream homes, a core value that drives everything we do. As an owner-operated business with over a decade of experience, I bring seasoned expertise to every project, no matter the size. Whether it’s a small renovation or a large-scale remodel, we’re committed to delivering exceptional results with care and precision.
"I'm amazed of how my shower upgrade turned out. I still can't believe cts creation finished in one day. I recommend cts creation to anybody and everybody. They killed it!"
Zach t on August 2024
At Connecticut Custom Creations™, we specialize in transforming kitchens, bathrooms, basements, and attics into beautiful, functional spaces tailored to your needs. We take great pride in helping people build their dream homes, a core value that drives everything we do. As an owner-operated business with over a decade of experience, I bring seasoned expertise to every project, no matter the size. Whether it’s a small renovation or a large-scale remodel, we’re committed to delivering exceptional results with care and precision.
"I'm amazed of how my shower upgrade turned out. I still can't believe cts creation finished in one day. I recommend cts creation to anybody and everybody. They killed it!"
Zach t on August 2024
Family-owned business handling all of your residential and commercial Handyman jobs. Over 10 years' experience.
"DO NOT hire Jose to do any work in your home! Had him work on a couple things in my new house. He did not start on the agreed upon date. Showed up late eveyday. And didnt show up at all some days. He installed tub/shower valve BACKWARDS and he left it leaking. Had to hire plummer to fix. His work is horrible. Please save your self time and money and stay away from JJ restoration. He did not finish painting either and was sloppy with the work he did get done. He was always leaving and coming back. Oh and HE DOES NOT HAVE INSURANCE!! Beware please!!"
Kevin G on October 2024
Family-owned business handling all of your residential and commercial Handyman jobs. Over 10 years' experience.
"DO NOT hire Jose to do any work in your home! Had him work on a couple things in my new house. He did not start on the agreed upon date. Showed up late eveyday. And didnt show up at all some days. He installed tub/shower valve BACKWARDS and he left it leaking. Had to hire plummer to fix. His work is horrible. Please save your self time and money and stay away from JJ restoration. He did not finish painting either and was sloppy with the work he did get done. He was always leaving and coming back. Oh and HE DOES NOT HAVE INSURANCE!! Beware please!!"
Kevin G on October 2024
Save money, If you have a basement its a good bet that you've experienced the heartbreak of water damage. What you may not realize is that a water logged basement may not be bad just for what you've been storing down there but it also leads to a unhealthy mold, foundation damage and other dire consequences. The solution is Brilliant Basement Waterproofing, LLC. We've got what it takes to restore your home to you dry, safe and well protected from the elements. Call us today for your free estimate! 8605988091
"Great group of hard working guys! Did a great job and cleaned up after themselves! Very punctual and efficient! Would highly recommend!"
Alexandra J on February 2019
Save money, If you have a basement its a good bet that you've experienced the heartbreak of water damage. What you may not realize is that a water logged basement may not be bad just for what you've been storing down there but it also leads to a unhealthy mold, foundation damage and other dire consequences. The solution is Brilliant Basement Waterproofing, LLC. We've got what it takes to restore your home to you dry, safe and well protected from the elements. Call us today for your free estimate! 8605988091
"Great group of hard working guys! Did a great job and cleaned up after themselves! Very punctual and efficient! Would highly recommend!"
Alexandra J on February 2019
Eastern Renovations LLC is a Middlesex County, CT based Renovation and Improvement Business. It's really difficult to find a reliable home renovation and remodeling company that actually does what it says it's going to do. That's why we created Eastern Renovations. We're your trusted expert for home renovations, remodeling projects and custom builds. We hold ourselves to the highest standards because our name and reputation are what matter most in this industry. We're here to serve and can't wait to here about your renovation project! We take pride in making your vision a reality. Whether your kitchen needs renovating or your home is begging for an addition, Eastern Renovations is here to help. With years of experience and a focus on you, home remodeling projects just got a whole lot easier! Contact us today, and we'll get started right away.
Eastern Renovations LLC is a Middlesex County, CT based Renovation and Improvement Business. It's really difficult to find a reliable home renovation and remodeling company that actually does what it says it's going to do. That's why we created Eastern Renovations. We're your trusted expert for home renovations, remodeling projects and custom builds. We hold ourselves to the highest standards because our name and reputation are what matter most in this industry. We're here to serve and can't wait to here about your renovation project! We take pride in making your vision a reality. Whether your kitchen needs renovating or your home is begging for an addition, Eastern Renovations is here to help. With years of experience and a focus on you, home remodeling projects just got a whole lot easier! Contact us today, and we'll get started right away.
Basement waterproofing services FAQs
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.
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