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Best basement waterproofing pros near Williamstown, NY

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Top-Rated Basement waterproofing pros in Williamstown - Updated Nov 2026

Avatar for Woodford Bros Inc
Woodford Bros Inc
4.0(
61
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Williamstown, NY and surrounding areas

Approved

In business since 1962

Free estimates

Emergency services offered

"Good salesmanship and promises up front , high prices. Apparently it's a crapshoot what work crew you get. The crew I got did extremely sloppy work, made lame excuses for shortcuts they took and damage they did, needed constant supervision to check on the work quality, took triple the estimated work time, (promised 2 days, took 6 and kept us and our kids up until 10:30 pm the on last day because they had another job scheduled), and finally needed the intervention of a supervisor in order to finish with barely acceptable job quality with a gravelly mess left around my sliding door. They used property without permission. It was overall an unpleasant experience having them in my living space, I ended up having to move out until they were finished. I hope never to have to repeat that experience. Hopefully the work they did will be effective in keeping water out of my basement during any upcoming monsoon."
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+4

Response time1 day
Response rate100%
9 neighbors recently requested a quote
Avatar for Woodford Bros., Inc.
Woodford Bros., Inc.
3.6(
36
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Williamstown, NY and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Great company to work with, very friendly knowledgeable people and customer satisfaction is their goal. Matt and his crew did a superb job restoring our finished basement after it got flooded when our sump pump had failed during heavy rains. Dual pumps were installed, along with waterproof and mold proof walls and flooring and a Sedona dehumidifier air purification system."
Company Photo 2018
Home of the Basement Bros
Wall cracks in bad shape
Wall fixed and safe
Before

+4

Response time2 hrs
45 neighbors recently requested a quote
Recommended by58%of homeowners
R Davies Construction
5.0(
17
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Williamstown, NY and surrounding areas

Approved

Super Service Award Winner

In business since 2015

Free estimates

Offers commercial services

"Rich and his team did a fantastic job on waterproofing my basement. I had many folks over for a quote and the vast majority of them spent hours of my time and quoted me very large prices on installing a waterproofing system. Rich came over, explained what work could be done, quoted a simple price, and left it at that. The crew was professional, timely, friendly, and thoughtful. They even provided sone minor fixes to some outside concrete items free of charge which saved from having to call out another crew for additional work. I highly recommend R. Davies if you want a professional crew who can get a job done efficiently and honestly."
Response time5 hrs
Response rate98%
13 neighbors recently requested a quote
Avatar for Highlander Waterproofing Inc
Highlander Waterproofing Inc
5.0(
1
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Williamstown, NY and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

At Highlander Waterproofing & Foundation Repair, we are the area's trusted experts specializing in basement and crawlspace waterproofing and encapsulation, along with foundation repair services for bowing and buckling walls, floor and wall cracks, and full foundation rebuilds to name a few. When you contact Highlander for a free inspection, you are choosing a BBB A+ Accredited, two-time Torch Award for Ethics Winner, with our most recent years 2021, 2022!

Response time1 day
Response rate100%
Avatar for Precision Grading
Precision Grading
5.0(
1
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Williamstown, NY and surrounding areas

Approved

Free estimates

Emergency services offered

Small jobs welcome

Precision grading,is a premier site-preparation contractor serving the north country region. We provide a comprehensive suite of earthmoving services designed to take your project from raw land to a construction-ready pad. We also specialize in land clearing and tree removal,landscaping and lawn maintenance \n\nOur Core Services Include:\n\nPrecision Grading: Ensuring optimal drainage and stable foundations.\n\nExcavation: Specialized digging for basements, footings, and utilities.\n\nLand Clearing: Professional removal of brush, trees, and debris.\n\nTrenching: Secure installation prep for water, sewer, and electrical lines.\n\nEquipped with a modern fleet and a crew of seasoned operators, we pride ourselves on solving complex site challenges while maintaining the highest safety standards in the industry.

New home construction
New home construction
New home construction
New home construction
New home construction

+10

2 neighbors recently requested a quote
Over the Top Unlimited, Inc.
New to Angi
Basement Drainage Channels - Install

Serving Williamstown, NY and surrounding areas

Approved

In business since 2023

Free estimates

Credit card accepted

Over The Top Unlimited Inc. is a fully incorporated, licensed and insured excavation and proudly serving Parish, NY and the surrounding areas. Owned and operated by Michael Peters, the company brings over 20 years of hands-on industry experience to every residential and commercial project. \n \nWith a full fleet of heavy equipment and the expertise to handle projects of all sizes, Over The Top Unlimited Inc. specializes in excavation, septic system installation and replacement, foundations, basement and crawl space work, waterproofing, and encapsulation services. Whether preparing a site for new construction, replacing aging infrastructure, or solving drainage and foundation issues, Michael and his team deliver dependable workmanship built to last. \n \nFrom start to finish, clients can expect professionalism, efficiency, and quality results backed by decades of experience in the field. \n

5 neighbors recently requested a quote
Avatar for Highlander Waterproofing, Inc
Highlander Waterproofing, Inc
3.8(
225
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Williamstown, NY and surrounding areas

In business since 2011

Free estimates

Emergency services offered

"I called numerous companies to give me an estimate on waterproofing our basement. Brandon was quick to respond and was able to address the problem and find a solution that was directed at the specific issue. Highlander was easy to work with and actually enjoyed having the entire crew at the house. They went above and beyond answering any questions with a guarantee and cost that I could live with. I highly recommend Highlander to anyone looking to fix a damp basement."
After
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+11

Response time1 day
Response rate100%
Recommended by88%of homeowners
Avatar for Flawless Painting
Flawless Painting
3.9(
12
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Williamstown, NY and surrounding areas

Free estimates

Emergency services offered

Flawless Painting is a fully insured painting company that focuses on residential, commercial, and municipal projects. As a residential specialist homeowner satisfaction is our priority. Additionally, Flawless Painting projects include drywall finishing and basement parging. Flawless Painting’s goal is to serve all painting, drywall and parging needs for each company, municipality and resident we work with and take pride in our affordable services and customer satisfaction. Paul; owner of Flawless Painting is a hands on contractor that oversees and is involved personally with each project. He is on the jobsites efficiently and daily doing the work himself and communicating with the customers regarding the project. With over 15 years experience and an extensive satisfied client list, we look forward to offering your company a free estimate and to building a long term business relationship to assure you our very best always.

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+6

Recommended by88%of homeowners
Showing 1-10 of 45
Basement Waterproofing FAQs, answered by experts

The best ventilation for a crawl space is a fully encapsulated crawl space with its own separate ventilation system. If you go this route, ensure you have the proper crawl space code requirements done and dusted before encapsulating your crawl space with a moisture barrier and installing appliances that may not be up to the proper specs.

Several types of insulation are effective for crawl spaces, with spray foam and rigid foam boards being two of the best options. Closed-cell spray foam insulation is a strong choice because it effectively repels moisture, resists biological growth, seals the air, and provides excellent thermal protection, especially in hard-to-reach areas. Rigid foam insulation boards are another excellent material as they insulate well, resist water damage, and will not settle over time like fiberglass or cellulose.

When doing any type of project involving mold, it's important to wear the right protective gear. You'll want an N-95 or KN-95 mask to keep yourself from inhaling mold spores, which can be irritating or trigger an allergic reaction in people with weakened immune systems. You'll also want to wear protective eyewear and gloves to limit your contact with mold.

Venting the crawl space can be a good alternative to encapsulation if you live in a dry climate and the moisture problem isn’t severe. You could also try a dehumidifier or install a vapor barrier on the floor, leaving the walls exposed. A new drainage system may eliminate the moisture problem if it is not caused by humidity.

The best basement waterproofing method depends on the specific issue causing the water intrusion. For minor problems, simple solutions like installing a properly functioning gutter system to direct runoff away and grading the soil to slope away from your foundation can be effective.

If you have more significant water problems, the solution will need to be more robust:

  • For standing water on the basement floor, a floor drain or a sump pump system may be the best solution.

  • For water pooling around the foundation, installing an exterior French drain can intercept water before it reaches the basement walls.

Other effective waterproofing methods, which can be used depending on your home's specific needs, climate, and soil type, include sealing the interior walls, landscape alteration, installing interior drainage systems, and using a dehumidification system to control moisture levels.

The Williamstown, NY homeowners’ guide to basement waterproofing services

From average costs to expert advice, get all the answers you need to get your job done.