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Average homeowner rating star icon4.1
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Verified basement waterproofing services reviews

Basement waterproofing pros in Norwalk

Avatar for R.A.M. Contracting, Inc.
R.A.M. Contracting, Inc.
72 Riverside Road
5.00(
2
)
Approved Pro
R.A.M. Contracting, Inc.
72 Riverside Road
5.00(
2
)
Approved Pro
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
27 years of experience

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


Avatar for Ron's Masonry
Ron's Masonry
24 Sniffen Street
4.96(
24
)
Approved Pro
Ron's Masonry
24 Sniffen Street
4.96(
24
)
Approved Pro
Customers say: Super punctual
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers
31 local quotes requested

At Ron's Masonry, we pride our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business.

"work with quality and efficient, professionally"

Edward L on June 2024

At Ron's Masonry, we pride our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business.

"work with quality and efficient, professionally"

Edward L on June 2024


Avatar for Optimum Waterproofing and Construction
Optimum Waterproofing and Construction
80 Baruch Dr #6b
1.50(
2
)
Approved Pro
Optimum Waterproofing and Construction
80 Baruch Dr #6b
1.50(
2
)
Approved Pro
90 local quotes requested
9 years of experience

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Overall, the project did not resolve the issue that I used Angi's for. In May, after a period of rain, I noticed that there was water accumulating in the basement floor of the property in Flushing, NY. Because of that I decided to seek out contractors to resolve the issue. I contacted many companies through and outside of Angi's. Through the estimates I learned that there were various options to resolving the issue of water accumulating in the center of the basement: french drain system, sump pumps, and also waterproofing the side of the property. Optimum Waterproofing and Construction (OWC) was willing to perform the job for $5,000 (but $4,000 if paid in cash), which was cheaper than the other companies that had come out to give me an estimate. The understanding was that the waterproofing would 1) have to fit my budget, as the property had undergone extensive renovations because of damages left by a previous tenant, 2) resolve the issue with the water coming in through the side of the building and forming a puddle in the center of the basement, and 3) the work would have to be done promptly, as a new tenant would be coming in. They recommended to waterproof the side of the property, approximately 10 linear feet along the property side. They agreed to start the day after the estimate. The next day, two laborers were sent to my property to break the concrete and dig the dirt (to expose the foundation) during inclement weather. They had performed the work underneath some tarp they had attached to the side of the house and on top of an adjacent fence (the neighbor’s property). After they had performed that work, the two who had come for the estimate explained to me, on site, that they could not continue with the work they had initially estimated, explaining that they had never seen a foundation that was so damaged. They said I required a sister wall and that would cost me another $10,000. I asked for some time to think it through. During this time I took photos and communicated with my principal and some other contractors and waterproofers that I had met while receiving estimates from other companies. Of course in the beginning I was flustered; however, one of the other waterproofers (A.M. Shield Waterproofing Corp.) said that “it doesn’t look too bad honestly. A good stucco coat would take care of that…” After a while, I asked if they could just close up the hole for the time being so that I could assess my options a bit further. They said they could not and that additional work had to be done, essentially putting me under duress to accept additional charges. I insisted that they continue the job as previously agreed upon, but the contractor said it was not possible and that I would have to do more work, which initially was an estimate for $10,000. Over the span of two hours I assessed my option by discussing it with other professionals and also my principal. During that time other alternatives were thrown out, one for $6,000 and another for $5,000. However, I was unable to meet them near any of the suggested price points. I even inquired about financing options, which I was informed they did not have that available. We compromised and he suggested foundation repair for an additional $1,000, bringing the total to $5,000. However, it was already too late for them to continue their work, and so the job was to be completed the following day. The excavated area was left open without proper barricades, but I used that opportunity for another general contractor to swing by. He (J.F.A.P. Inc.) also stated, “It doesn’t look like much of an issue. They just need to patch that up with stucco.” However, after he saw the work that was being performed, he advised me to make sure that they dug all the way down to the foundation to do the waterproofing. Additionally, he told me to make sure that the workers compacted the soil when they were refilling the hole (which was not being done, until I told them to). Although I am understanding of modifications, OWC knew I was operating off a budget and it seemed like they were using the inclement weather and also the fear of possible foundation issues to pressure me into a decision. They additionally wanted to charge me for the cement to cover the hole they dug as well as for trash removal (it has been my consistent experience with contractors that they have an understanding that they should leave the premises in the same condition, aside from the work performed). From my perspective, it just looked like OWC wanted to tack on additional fees wherever and whenever possible. Although the removal of trash and the cement work was included in the $5,000, I did feel that everything leading up to the resolution was underhanded. The following day they completed the work; however, the original problem still persists. On May 31st I sent OWC a picture of the leak in the basement. The text message did not go through. I tried calling them approximately 5 times, but no calls were being answered. I even sent an email: "I've been trying to get in touch via phone, but I am unable to get through...." When the communications seemed impossible, I contacted Angi and voiced my concern. After I spoke with a representative from Angi, I was able to get in touch with OWC. I opted not to file a formal complaint at this time, as I wanted to give OWC the benefit of the doubt and try to resolve this without involving Angi's more formal policies. After the phone call, I attempted to set a time with OWC for them to come see the issue. After a few attempts they agreed to come out to the property on June 4th. After inspection and also running a waterproofing test (running the hose in the area they waterproofed for approximately 30 minutes over the concrete they had covered the dirt with), they said that it was not their workmanship that was at issue. They said that the waterproofed wall was causing the water to travel around the waterproofing and enter in through new areas. If that was the case, they are the professionals and should have known that would have been the result. They said to contact again during the next instance, but I decided to forego communications with OWC directly in hopes of a resolution. If anything, it sounds like a sump pump should have been installed in addition or they should have done a French drain system. On July 24th my tenant contacted me and informed me that the basement was leaking again. Pursuant to my experience discussing this issue with OWC, I did not bother to contact OWC this time, because it sounded like they were going to skirt responsibility. Overall, I am upset that OWC feigned this was not a problem with their workmanship or services. I find that viewpoint to be problematic. Nobody pays a contractor to attempt to fix a problem. We pay to have the problem solved. In my situation, the problem was not fixed and I ended up spending $5,000 with nothing to show for. I had given them an opportunity to rectify the issue last time, but it was to no avail."

Mike L on July 2025

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

"Overall, the project did not resolve the issue that I used Angi's for. In May, after a period of rain, I noticed that there was water accumulating in the basement floor of the property in Flushing, NY. Because of that I decided to seek out contractors to resolve the issue. I contacted many companies through and outside of Angi's. Through the estimates I learned that there were various options to resolving the issue of water accumulating in the center of the basement: french drain system, sump pumps, and also waterproofing the side of the property. Optimum Waterproofing and Construction (OWC) was willing to perform the job for $5,000 (but $4,000 if paid in cash), which was cheaper than the other companies that had come out to give me an estimate. The understanding was that the waterproofing would 1) have to fit my budget, as the property had undergone extensive renovations because of damages left by a previous tenant, 2) resolve the issue with the water coming in through the side of the building and forming a puddle in the center of the basement, and 3) the work would have to be done promptly, as a new tenant would be coming in. They recommended to waterproof the side of the property, approximately 10 linear feet along the property side. They agreed to start the day after the estimate. The next day, two laborers were sent to my property to break the concrete and dig the dirt (to expose the foundation) during inclement weather. They had performed the work underneath some tarp they had attached to the side of the house and on top of an adjacent fence (the neighbor’s property). After they had performed that work, the two who had come for the estimate explained to me, on site, that they could not continue with the work they had initially estimated, explaining that they had never seen a foundation that was so damaged. They said I required a sister wall and that would cost me another $10,000. I asked for some time to think it through. During this time I took photos and communicated with my principal and some other contractors and waterproofers that I had met while receiving estimates from other companies. Of course in the beginning I was flustered; however, one of the other waterproofers (A.M. Shield Waterproofing Corp.) said that “it doesn’t look too bad honestly. A good stucco coat would take care of that…” After a while, I asked if they could just close up the hole for the time being so that I could assess my options a bit further. They said they could not and that additional work had to be done, essentially putting me under duress to accept additional charges. I insisted that they continue the job as previously agreed upon, but the contractor said it was not possible and that I would have to do more work, which initially was an estimate for $10,000. Over the span of two hours I assessed my option by discussing it with other professionals and also my principal. During that time other alternatives were thrown out, one for $6,000 and another for $5,000. However, I was unable to meet them near any of the suggested price points. I even inquired about financing options, which I was informed they did not have that available. We compromised and he suggested foundation repair for an additional $1,000, bringing the total to $5,000. However, it was already too late for them to continue their work, and so the job was to be completed the following day. The excavated area was left open without proper barricades, but I used that opportunity for another general contractor to swing by. He (J.F.A.P. Inc.) also stated, “It doesn’t look like much of an issue. They just need to patch that up with stucco.” However, after he saw the work that was being performed, he advised me to make sure that they dug all the way down to the foundation to do the waterproofing. Additionally, he told me to make sure that the workers compacted the soil when they were refilling the hole (which was not being done, until I told them to). Although I am understanding of modifications, OWC knew I was operating off a budget and it seemed like they were using the inclement weather and also the fear of possible foundation issues to pressure me into a decision. They additionally wanted to charge me for the cement to cover the hole they dug as well as for trash removal (it has been my consistent experience with contractors that they have an understanding that they should leave the premises in the same condition, aside from the work performed). From my perspective, it just looked like OWC wanted to tack on additional fees wherever and whenever possible. Although the removal of trash and the cement work was included in the $5,000, I did feel that everything leading up to the resolution was underhanded. The following day they completed the work; however, the original problem still persists. On May 31st I sent OWC a picture of the leak in the basement. The text message did not go through. I tried calling them approximately 5 times, but no calls were being answered. I even sent an email: "I've been trying to get in touch via phone, but I am unable to get through...." When the communications seemed impossible, I contacted Angi and voiced my concern. After I spoke with a representative from Angi, I was able to get in touch with OWC. I opted not to file a formal complaint at this time, as I wanted to give OWC the benefit of the doubt and try to resolve this without involving Angi's more formal policies. After the phone call, I attempted to set a time with OWC for them to come see the issue. After a few attempts they agreed to come out to the property on June 4th. After inspection and also running a waterproofing test (running the hose in the area they waterproofed for approximately 30 minutes over the concrete they had covered the dirt with), they said that it was not their workmanship that was at issue. They said that the waterproofed wall was causing the water to travel around the waterproofing and enter in through new areas. If that was the case, they are the professionals and should have known that would have been the result. They said to contact again during the next instance, but I decided to forego communications with OWC directly in hopes of a resolution. If anything, it sounds like a sump pump should have been installed in addition or they should have done a French drain system. On July 24th my tenant contacted me and informed me that the basement was leaking again. Pursuant to my experience discussing this issue with OWC, I did not bother to contact OWC this time, because it sounded like they were going to skirt responsibility. Overall, I am upset that OWC feigned this was not a problem with their workmanship or services. I find that viewpoint to be problematic. Nobody pays a contractor to attempt to fix a problem. We pay to have the problem solved. In my situation, the problem was not fixed and I ended up spending $5,000 with nothing to show for. I had given them an opportunity to rectify the issue last time, but it was to no avail."

Mike L on July 2025


Infinity Waterproofing And Construction LLC
208 Harbor Drive Suite 213
New on AngiNew on Angi
Approved Pro
Infinity Waterproofing And Construction LLC
208 Harbor Drive Suite 213
New on AngiNew on Angi
Approved Pro
121 local quotes requested
23 years of experience

We take great pride in our experience, expertise, quality, and customer service provided to meet your needs. It is our mission to exhibit excellent workmanship and supreme dedication from start to finish of a project. We understand the needs and expectations of our customers, and take great care to work and communicate with them in a courteous and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job. infinitywaterproofingandconstructionllc.com

We take great pride in our experience, expertise, quality, and customer service provided to meet your needs. It is our mission to exhibit excellent workmanship and supreme dedication from start to finish of a project. We understand the needs and expectations of our customers, and take great care to work and communicate with them in a courteous and professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job. infinitywaterproofingandconstructionllc.com


Avatar for Budget Dry Waterproofing, Inc.
Budget Dry Waterproofing, Inc.
158 Route 81
4.67(
184
)
Approved Pro
Budget Dry Waterproofing, Inc.
158 Route 81
4.67(
184
)
Approved Pro
Customers say: Quick response
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
152 local quotes requested

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.

"Cayden and Rick installed a new bulkhead. They were prompt, courteous and hard working "

Tom E on July 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.

"Cayden and Rick installed a new bulkhead. They were prompt, courteous and hard working "

Tom E on July 2025


Avatar for Connecticut Basement Systems, Inc.
Connecticut Basement Systems, Inc.
33 Progress Avenue
4.80(
35
)
Approved Pro
Connecticut Basement Systems, Inc.
33 Progress Avenue
4.80(
35
)
Approved Pro
Customers say: Quick response
131 local quotes requested
38 years of experience

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


Primestep Flooring LLC
12 Madison Avenue
5.00(
3
)
Primestep Flooring LLC
12 Madison Avenue
5.00(
3
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

With 14 years of experience in the flooring industry, I bring a deep understanding of both traditional and modern techniques. My approach is built on continuous innovation, which allows me to offer the latest solutions in flooring materials and design. What sets me apart is my unwavering commitment to excellence, whether it's in the craftsmanship, attention to detail, or customer service. I take pride in delivering high-quality work that stands the test of time, ensuring that every project is completed to the highest standard.

"I recently had the pleasure of working with Galo and his team from Primestep Flooring. They installed hardwood flooring throughout my home, updated my kitchen flooring, and even added a stunning epoxy finish to my garage. The results are absolutely breathtaking. Galo and his crew were professional, punctual, and incredibly skilled. They took the time to understand my vision and delivered beyond my expectations. The quality of their work is top-notch, and they left my space cleaner than when they arrived. I will definitely be calling them for future projects and recommending them to everyone I know. Thank you, Galo and team, for transforming my home!"

Andress M on February 2025

With 14 years of experience in the flooring industry, I bring a deep understanding of both traditional and modern techniques. My approach is built on continuous innovation, which allows me to offer the latest solutions in flooring materials and design. What sets me apart is my unwavering commitment to excellence, whether it's in the craftsmanship, attention to detail, or customer service. I take pride in delivering high-quality work that stands the test of time, ensuring that every project is completed to the highest standard.

"I recently had the pleasure of working with Galo and his team from Primestep Flooring. They installed hardwood flooring throughout my home, updated my kitchen flooring, and even added a stunning epoxy finish to my garage. The results are absolutely breathtaking. Galo and his crew were professional, punctual, and incredibly skilled. They took the time to understand my vision and delivered beyond my expectations. The quality of their work is top-notch, and they left my space cleaner than when they arrived. I will definitely be calling them for future projects and recommending them to everyone I know. Thank you, Galo and team, for transforming my home!"

Andress M on February 2025


Joe Flan The Handyman
27 Crows Nest Lane
No reviews
Joe Flan The Handyman
27 Crows Nest Lane
No reviews
6 years of experience

Joe Flan The Handyman is licensed and Insured handyman with 10 plus years of experience. He is reliable, fast, reasonably priced. Reach out for a free quote.

Joe Flan The Handyman is licensed and Insured handyman with 10 plus years of experience. He is reliable, fast, reasonably priced. Reach out for a free quote.


E&J CONSTRUCTION AND RENOVATION LLC
No reviews
E&J CONSTRUCTION AND RENOVATION LLC
No reviews

My company specializes in stucco, stone, brick, and general whole house renovations. I have been in the construction and renovations area for more than 5 years and I own my own company and you will always receive the best deal

My company specializes in stucco, stone, brick, and general whole house renovations. I have been in the construction and renovations area for more than 5 years and I own my own company and you will always receive the best deal


...
Showing 11-20 of 211

FAQs for basement waterproofing projects in Norwalk, CT

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.

The Norwalk, CT homeowners’ guide to basement waterproofing services
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