Get matched with top basement waterproofing pros in Kensington, MD
There are 58 highly-rated local basement waterproofing pros.
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209 Verified Reviews for Basement Waterproofing pros in Kensington, MD
*The Angi rating for Basement Waterproofing companies in Kensington, MD 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 Kensington, MD 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 May 11, 2025
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Basement waterproofing pros in Kensington
With over 30 years experience in Basement Waterproofing and Mold Remediation services, Andrew A. Altman, Sr. Is a top rated veteran with a proven record beyond belief! In fact the certified, professional Staff has a combined experience of over 60 years. When you hire Best Buy Waterproofing, you are hiring the very best in the industry! They have the WIT attitude ( Whatever It Takes ) and customer satisfaction is their #1 priority as they are "Comitted To Excellence!" Best Buy Waterproofing is licensed, bonded, insured, and certified. They have earned the reputation of standing behind their incredible work and customer satisfaction. They offer free estimates and the very best financing available. They even have No payments & No Interest for 18 months! Best Buy Waterproofing stands behind their lifetime of the structure warranty on their systems. Also on all sump pump systems and their intelligent battery back ups! Best Buy is the ONLY company who offers this kind of warranty on those services as Strength is their Foundation! If you need a dry basement certificate, call us immediately. We are operational 24/7 365!
"Dan was highly professional and offered an excellent evaluation of my needs. He actually went into the crawl space to better understand my needs. A good neighbor and a person to know. Thank you."
Arsalan S on November 2024
With over 30 years experience in Basement Waterproofing and Mold Remediation services, Andrew A. Altman, Sr. Is a top rated veteran with a proven record beyond belief! In fact the certified, professional Staff has a combined experience of over 60 years. When you hire Best Buy Waterproofing, you are hiring the very best in the industry! They have the WIT attitude ( Whatever It Takes ) and customer satisfaction is their #1 priority as they are "Comitted To Excellence!" Best Buy Waterproofing is licensed, bonded, insured, and certified. They have earned the reputation of standing behind their incredible work and customer satisfaction. They offer free estimates and the very best financing available. They even have No payments & No Interest for 18 months! Best Buy Waterproofing stands behind their lifetime of the structure warranty on their systems. Also on all sump pump systems and their intelligent battery back ups! Best Buy is the ONLY company who offers this kind of warranty on those services as Strength is their Foundation! If you need a dry basement certificate, call us immediately. We are operational 24/7 365!
"Dan was highly professional and offered an excellent evaluation of my needs. He actually went into the crawl space to better understand my needs. A good neighbor and a person to know. Thank you."
Arsalan S on November 2024
Green Future Construction and Tree Specialists is the area's premier full-service company for all your outdoor needs! With experts in construction, landscape design, and tree services all under one roof, we make scheduling your project easy and ensure it’s managed seamlessly from start to finish, exceeding expectations every step of the way.
"Absolutely recommend Green Future-they removed an enormous tree from our back yard, which we were extremely anxious about. They were fantastic; fair priced, very fast turnaround from estimate to completion."
Dyana Q on April 2025
Green Future Construction and Tree Specialists is the area's premier full-service company for all your outdoor needs! With experts in construction, landscape design, and tree services all under one roof, we make scheduling your project easy and ensure it’s managed seamlessly from start to finish, exceeding expectations every step of the way.
"Absolutely recommend Green Future-they removed an enormous tree from our back yard, which we were extremely anxious about. They were fantastic; fair priced, very fast turnaround from estimate to completion."
Dyana Q on April 2025
We strive to exceed your expectations in waterproofing, mold remediation and foundation repair. We take pride in our work, that’s why we don’t employ subcontractors. We understand there are a lot of choices out there when choosing a certified installer – we hope you choose us! Protect your home and health from mold and mildew invaders. In our 28 years of experience, we have never encountered a wet basement, crawlspace encapsulation or mold removal condition that we couldn’t handle. Give us a call today for a free, no obligation inspection and professional basement waterproofing system tailored for your home or commercial project. AA Action Waterproofing is licensed, insured and bonded with a A+ Rating with the BBB. Please call us and we’ll happily supply you with references.
"Our 25+ year-old French drain system in our 100-year-old basement was showing signs of failure, so we contacted several companies to get advice on what to do. Jason of AA Action was very professional and helpful when he performed his initial inspection of our basement, and had very good ideas on what needed to be done. The price he quoted for the work was also, based on what we had read, reasonable. We ended up going with another company recommended by Angi, but only because it brought up a couple of options that we had not thought of, and we felt comfortable with them doing the extra work. We were not at all unhappy with AA Action's suggestions or pricing - it's just that the other company's additional ideas made sense for our circumstances."
John A on June 2024
We strive to exceed your expectations in waterproofing, mold remediation and foundation repair. We take pride in our work, that’s why we don’t employ subcontractors. We understand there are a lot of choices out there when choosing a certified installer – we hope you choose us! Protect your home and health from mold and mildew invaders. In our 28 years of experience, we have never encountered a wet basement, crawlspace encapsulation or mold removal condition that we couldn’t handle. Give us a call today for a free, no obligation inspection and professional basement waterproofing system tailored for your home or commercial project. AA Action Waterproofing is licensed, insured and bonded with a A+ Rating with the BBB. Please call us and we’ll happily supply you with references.
"Our 25+ year-old French drain system in our 100-year-old basement was showing signs of failure, so we contacted several companies to get advice on what to do. Jason of AA Action was very professional and helpful when he performed his initial inspection of our basement, and had very good ideas on what needed to be done. The price he quoted for the work was also, based on what we had read, reasonable. We ended up going with another company recommended by Angi, but only because it brought up a couple of options that we had not thought of, and we felt comfortable with them doing the extra work. We were not at all unhappy with AA Action's suggestions or pricing - it's just that the other company's additional ideas made sense for our circumstances."
John A on June 2024
Here at Brothers Waterproofing, we provide foundation services such as waterproofing, structural repair, crawlspace encapsulation, piers, sump pump replacement, sub floor drain system, concrete work, and air ventilation systems. Founder John Enciu, has been in the industry for over 15 years. He has put together a team with over 50+ years of combined experience, that can strategically and effectively protect your BIGGEST investment, YOUR HOME. We offer FREE ESTIMATES, FHA/VA Certifications, and a NO PRESSURE approach! A TRANSFERABLE OWNERSHIP WARRANTY and a NO QUESTIONS ASKED service policy. We are committed to EXCELLENCE and HONESTY! CALL US NOW and see how we can help you. (888)362-4884
"I highly recommend Brother's Waterproofing for your waterproofing and remodeling needs. John, the owner, came to the house right away and provided a free estimate for the leaks in my rental property. From the first day to the last day, John stayed on top of the project to ensure his crew addressed and the leaks and repaired the damages in the basement and bathroom. I've dealt with a lot of contractors over the years, John and his staff are right up there in terms of expertise, reliability and quality."
Fong C on October 2024
Here at Brothers Waterproofing, we provide foundation services such as waterproofing, structural repair, crawlspace encapsulation, piers, sump pump replacement, sub floor drain system, concrete work, and air ventilation systems. Founder John Enciu, has been in the industry for over 15 years. He has put together a team with over 50+ years of combined experience, that can strategically and effectively protect your BIGGEST investment, YOUR HOME. We offer FREE ESTIMATES, FHA/VA Certifications, and a NO PRESSURE approach! A TRANSFERABLE OWNERSHIP WARRANTY and a NO QUESTIONS ASKED service policy. We are committed to EXCELLENCE and HONESTY! CALL US NOW and see how we can help you. (888)362-4884
"I highly recommend Brother's Waterproofing for your waterproofing and remodeling needs. John, the owner, came to the house right away and provided a free estimate for the leaks in my rental property. From the first day to the last day, John stayed on top of the project to ensure his crew addressed and the leaks and repaired the damages in the basement and bathroom. I've dealt with a lot of contractors over the years, John and his staff are right up there in terms of expertise, reliability and quality."
Fong C on October 2024
Almontes Demolition & Construction is a trusted construction and demolition company based in Clinton, MD. They specialize in residential and commercial projects, offering comprehensive services from demolition to complete renovations. With a focus on safety and efficiency, their experienced team utilizes state-of-the-art equipment to deliver high-quality results. Almontes is committed to sustainable practices, recycling materials whenever possible to minimize environmental impact. Known for their reliability and attention to detail, they strive to exceed client expectations on every project.
"David came over and graded my backyard. It looks great."
Jon R on May 2025
Almontes Demolition & Construction is a trusted construction and demolition company based in Clinton, MD. They specialize in residential and commercial projects, offering comprehensive services from demolition to complete renovations. With a focus on safety and efficiency, their experienced team utilizes state-of-the-art equipment to deliver high-quality results. Almontes is committed to sustainable practices, recycling materials whenever possible to minimize environmental impact. Known for their reliability and attention to detail, they strive to exceed client expectations on every project.
"David came over and graded my backyard. It looks great."
Jon R on May 2025
Always Waterproofing has 35 years of experience in the industry. We are locally owned and operated. If you want the job right the first time, call James today!
"Steve was very upfront about what was needed for mitigation and cost. His crew came in on time, and the project was completed to my satisfaction!"
Paul H on May 2025
Always Waterproofing has 35 years of experience in the industry. We are locally owned and operated. If you want the job right the first time, call James today!
"Steve was very upfront about what was needed for mitigation and cost. His crew came in on time, and the project was completed to my satisfaction!"
Paul H on May 2025
With over 20+ years in business and a combined 100+ years in experience, we strive to be the best in our industry. We offer a variety of basement and crawlspace solutions including Interior Drain-Tile Sub-Floor Drainage Systems, Exterior Foundation Excavations, Sump Pumps, Battery Backup Systems, Crack Repairs, Landscaping Drainage Solutions, , Crawlspace waterproofing Encapsulation and much more. Call us today for a FREE ESTIMATE! "We are here to help you weather the storm". We Service all of Maryland and Delaware shore. we also specialize in foundation repair shifting walls foundation cracking house settling wall replacement carbon fiber and much more call today 1800-679-6513 inspection and estimate are free 0 down 100% financing available some of our customers have said they saved as much as 20% where here to solve big problems with simple solutions additional discounts during dry spells don't wait till heavy rains and flooding call now 1800-679-6513
"Travis and his team did an amazing job!"
brittany f on February 2022
With over 20+ years in business and a combined 100+ years in experience, we strive to be the best in our industry. We offer a variety of basement and crawlspace solutions including Interior Drain-Tile Sub-Floor Drainage Systems, Exterior Foundation Excavations, Sump Pumps, Battery Backup Systems, Crack Repairs, Landscaping Drainage Solutions, , Crawlspace waterproofing Encapsulation and much more. Call us today for a FREE ESTIMATE! "We are here to help you weather the storm". We Service all of Maryland and Delaware shore. we also specialize in foundation repair shifting walls foundation cracking house settling wall replacement carbon fiber and much more call today 1800-679-6513 inspection and estimate are free 0 down 100% financing available some of our customers have said they saved as much as 20% where here to solve big problems with simple solutions additional discounts during dry spells don't wait till heavy rains and flooding call now 1800-679-6513
"Travis and his team did an amazing job!"
brittany f on February 2022
With our EPA-registered, plant-based products, you can trust Green Home Solutions to address a range of indoor air quality needs: mold remediation, odor removal, allergen control, disinfection/sanitization, and air filtration. Our inspections detect indoor air quality issues, determine potential underlying causes, and help us create a customized and effective treatment plan that features our EPA-registered, plant-based products and IICRC protocols. We’re fast, affordable, and effective at eliminating mold, preventing regrowth, removing odors, and making air better. We uphold a standard of integrity with fairness, honesty, and personal responsibility. Accurate knowledge combined with a drive to serve our customers' interests and needs: these qualities make us true professionals you can rely on.
"Quick and painless."
Robert G on March 2025
With our EPA-registered, plant-based products, you can trust Green Home Solutions to address a range of indoor air quality needs: mold remediation, odor removal, allergen control, disinfection/sanitization, and air filtration. Our inspections detect indoor air quality issues, determine potential underlying causes, and help us create a customized and effective treatment plan that features our EPA-registered, plant-based products and IICRC protocols. We’re fast, affordable, and effective at eliminating mold, preventing regrowth, removing odors, and making air better. We uphold a standard of integrity with fairness, honesty, and personal responsibility. Accurate knowledge combined with a drive to serve our customers' interests and needs: these qualities make us true professionals you can rely on.
"Quick and painless."
Robert G on March 2025
Aquaguard has serviced the region for more than 30 years. Based in Beltsville, MD. Aquaguard has thousands of satisfied customers in Maryland, DC and Northern Virginia. Recently we were spotlighted on CNBC and PBS for an article on basement flooding - please visit our website to view it. Aquaguard's experience has shown that no two problems are the same. With a company-wide commitment to high quality workmanship and customer satisfaction, our primary goal is to solve your specific problem. Our inspection will involve a thorough examination of your foundation inside and out. We will explain the cause of your water problem, what can be done to correct it permanently and leave you with a free estimate. Also offering Egress Windows, Elevator Fit Pits & Steelway Doors We employ the most experienced construction professionals in the waterproofing business and utilize time tested methods to solve basement water problem. Credit Cards Accepted / Financing Available
"Very pleased with the work they did."
Joanne O on September 2024
Aquaguard has serviced the region for more than 30 years. Based in Beltsville, MD. Aquaguard has thousands of satisfied customers in Maryland, DC and Northern Virginia. Recently we were spotlighted on CNBC and PBS for an article on basement flooding - please visit our website to view it. Aquaguard's experience has shown that no two problems are the same. With a company-wide commitment to high quality workmanship and customer satisfaction, our primary goal is to solve your specific problem. Our inspection will involve a thorough examination of your foundation inside and out. We will explain the cause of your water problem, what can be done to correct it permanently and leave you with a free estimate. Also offering Egress Windows, Elevator Fit Pits & Steelway Doors We employ the most experienced construction professionals in the waterproofing business and utilize time tested methods to solve basement water problem. Credit Cards Accepted / Financing Available
"Very pleased with the work they did."
Joanne O on September 2024
For over 66 years, '58 Foundations & Waterproofing has provided the highest-quality basement waterproofing, crawl space encapsulation, foundation repair, and mold removal. We lead with a promise of Trusted Five-Star Service, which means the customer experience is at the center of everything we do. Since 1958, we have been steadfast in keeping this promise and upholding the values upon which '58 Foundations & Waterproofing was built: trust, teamwork, integrity, respect, and communication. From the initial call to job completion, our customers are met with knowledgeable, caring, and professional staff prepared to offer a five-star experience that is unmatched in the home repair industry. What’s more, you can enjoy the peace of mind that comes with our lifetime warranty and our industry-unique money-back guarantee!
"If you’re considering 58 Foundations, do yourself a favor and stop right now. I cannot, in good conscience, recommend this company to anyone. Their complete disregard for accountability is infuriating. At first, things appeared to go smoothly, but the illusion of competence quickly disintegrated when it came time for the building inspection. The city inspector requires a letter from the project engineer verifying that the work is safe, sound, and compliant with code. 58 Foundations flat-out refuses to provide this basic validation of their work. Why won’t they stand behind their project? Are they hiding shoddy, substandard work? As a homeowner, I’m now saddled with the mess of an open permit and no resolution in sight. This is unacceptable. If a company won’t back their work with a simple letter, what does that say about their integrity—or lack thereof? Didn't expect this kind of run around from a well established professional firm, save yourself the headache."
Warrick S on December 2024
For over 66 years, '58 Foundations & Waterproofing has provided the highest-quality basement waterproofing, crawl space encapsulation, foundation repair, and mold removal. We lead with a promise of Trusted Five-Star Service, which means the customer experience is at the center of everything we do. Since 1958, we have been steadfast in keeping this promise and upholding the values upon which '58 Foundations & Waterproofing was built: trust, teamwork, integrity, respect, and communication. From the initial call to job completion, our customers are met with knowledgeable, caring, and professional staff prepared to offer a five-star experience that is unmatched in the home repair industry. What’s more, you can enjoy the peace of mind that comes with our lifetime warranty and our industry-unique money-back guarantee!
"If you’re considering 58 Foundations, do yourself a favor and stop right now. I cannot, in good conscience, recommend this company to anyone. Their complete disregard for accountability is infuriating. At first, things appeared to go smoothly, but the illusion of competence quickly disintegrated when it came time for the building inspection. The city inspector requires a letter from the project engineer verifying that the work is safe, sound, and compliant with code. 58 Foundations flat-out refuses to provide this basic validation of their work. Why won’t they stand behind their project? Are they hiding shoddy, substandard work? As a homeowner, I’m now saddled with the mess of an open permit and no resolution in sight. This is unacceptable. If a company won’t back their work with a simple letter, what does that say about their integrity—or lack thereof? Didn't expect this kind of run around from a well established professional firm, save yourself the headache."
Warrick S on December 2024
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.
- Garrett Park
- Glenmont
- Wheaton
- Forest Glenn
- Kemp Mill
- Chevy Chase
- North Bethesda
- Silver Spring
- Somerset
- Bethesda
- Aspen Hill
- White Oak
- Takoma Park
- Glen Echo
- Hillandale
- Cabin John
- Adelphi
- Colesville
- Langley Park
- Rockville
- Fairland
- Chillum
- University Park
- Travilha
- Calverton
- College Park
- Cloverly
- Potomac
- Berwyn Heights
- Mount Rainier
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