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Best basement waterproofing pros near Windham, NY

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

Avatar for Basement Systems Of New York
Basement Systems Of New York
4.3(
42
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Windham, NY and surrounding areas

Approved

In business since 1993

Free estimates

Warranties offered

"The entire team from estimate to completion were great! When an unforeseen problem arose they were responsive, punctual and thoroughly professional in taking care of the issue. What a pleasure to hire a company that takes pride in their work and making sure that the customer is completely satisfied. I highly recommend Basement Systems of New York."
Pouring A New Slab At Our Office - Bullville, NY
Calling A Last Minute Audible To Install A New Concrete Slab - Liberty, NY
Waterproofing A Walkout Basement With Our Patented Two-Stage Waterproofing System - Pine Bush, NY
Installing An Interior Waterproofing System With A Gravity Discharge - Holmes, NY
Knocking Down And Rebuilding A Foundation Wall - Kiamesha Lake,  NY

+7

Response time1 day
19 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for All Dry Basement
All Dry Basement
4.2(
22
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Windham, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"In all my years of hiring various contractors for work done on my own place, as well as for work done at some properites I managed for many years, (30)I have never had such excellent work done by any conractor. Not only did All Dry Basement honor their written estimate, they went beyond several times on other things not covered, but related. This was all done in Covid times. All workers were always unfailingly polite, respectful, neat, organized, prompt etc. Fill in the words of your choice for attributes that you would look for in a contactor, and you have a picture of All Dry basement people."
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+7

Response time1 day
Response rate100%
19 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
5.0(
6
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Windham, NY and surrounding areas

Approved (Corporate)

In business since 2019

Free estimates

Warranties offered

Groundworks is the North America's leading and fastest-growing foundation repair and water management solutions provider. Groundworks is a vertically integrated company with its own manufacturing operations and a world-class software solution, allowing us to serve our customers more effectively. From the first phone call to the annual maintenance offered, our customers have peace of mind knowing we're there with one mission to repair, protect and improve their home. For state licenses visit Groundworks.com/licensing

Foundation
Foundation
Foundation
Foundation
Foundation

+14

277 neighbors recently requested a quote
Avatar for SS Excavation
SS Excavation
New to Angi
Basement Drainage Channels - Install

Serving Windham, NY and surrounding areas

Approved

In business since 2021

Free estimates

Small jobs welcome

SS Excavation is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 8 years of experience serving Schoharie county, NY and surrounding areas. We offer all types of excavation,grading work, brush and land clearing. Call today and let us put our experience to work for you!

Response time2 days
Rimco Spray Foam Insulation and Weatherization
5.0(
4
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Windham, NY and surrounding areas

In business since 2020

Free estimates

Credit card accepted

"We have a basement that looks like new. The walls are all newly water-proofed, foundation cracks are sealed, and ceiling joist gaps are filled in to help increase energy efficiency. It is a huge relief to know that our water issues have been addressed."
Response time2 days
Response rate98%
Avatar for Clearwater Power Washing and Weatherization
Clearwater Power Washing and Weatherization
5.0(
4
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Windham, NY and surrounding areas

In business since 2020

Free estimates

Credit card accepted

I am a locally owned, and operated business that is committed to excellence in every aspect of word. I uphold a standard of integrity bound by fairness, honesty, and personal responsibility. My distinction is the quality of service that I bring to the customer, which would be the same way I would treat family, or a close friend. \n \n** WE ARE FULLY INSURED! ** \n \nCALL US TODAY AT: \n518-948-0465 \nTO LEARN MORE ABOUT OUR VETERAN DISCOUNT RATES!

Avatar for Basement Systems Of New York
Basement Systems Of New York
3.5(
20
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Windham, NY and surrounding areas

In business since 2002

Free estimates

Credit card accepted

"we are selling our home and had water in the crawlspace. bs of ny waterproofed and insulated the crawlspace. an expensive fix, but one that is working and will hopefully allow us to sell the house. they were very clean and professional. crew of at least 6 and foreman came and finished job in 2 days and came back to insulate week later with a crew of one. very happy with the work and the financeing they gave us access to."
Response time2 days
Recommended by84%of homeowners
Avatar for Expediant Environmental Solutions, LLC
Expediant Environmental Solutions, LLC
3.9(
438
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Windham, NY and surrounding areas

In business since 1995

Free estimates

Emergency services offered

"As a realtor, I found Rich from Expedient Environmental Solutions while searching for a client who needed mold remediation. He and his crew did an excellent job at a fair price. They finished on time and left the home clean. So, when I was looking personally to have basement waterproofing (interior french drains and sump pump) along with radon mitigation, I received 3 quotes, of which theirs was the most comprehensive plan, and again not the highest quote overall. They finished the work ahead of schedule by bringing four workers the second day, were respectful throughout and left the area reasonably clean. I'm confident that my days (and nights!) with the shopvac and flooded basement are finally over, and grateful they stand behind their work for a full year. Good contractors are hard to find. Glad I found them. Thanks and I highly recommend!"
Response time2 days
Response rate100%
Recommended by87%of homeowners
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Basement Waterproofing FAQs, answered by experts

It depends on what caused your basement flooding, the extent of the problem, and the risk of the flood continuing. If your flood is coming from a septic system or sewer line, breathing in the sewer gasses can be dangerous, so you should vacate. If the flood occurs from an ongoing natural disaster, relocating to a safe area might be wise. If you just have a plumbing leak or rainwater coming in, you can likely stay in the house if you don’t have electrical lines down there, but make sure you call in professionals to fix the issue immediately.

Installing a bathroom in a basement isn’t a project for most homeowners. Many parts—plumbing, electricity, and carpentry—go into this project, each requiring expert-level knowledge and tools. One miscalculation can lead to very expensive repairs. Plus, some homeowner’s insurance might not pay for damages caused by a homeowner DIYing this project. You can protect yourself by allowing the pros to complete this job for you. 

If you set up a dehumidifier, it will usually dry out your wet crawl space within 12 to 24 hours. Once the space is dry, it’s a good idea to take preventative measures to keep it dry. These include installing a French drain or other exterior foundation drainage system, installing a sump pump in the crawl space, and installing a vapor barrier in addition to leaving the dehumidifier running.

A plastic vapor barrier should completely cover your basement to prevent water from penetrating through the walls. This typically goes before installing insulation to prevent moisture from building up and becoming trapped on the inside of your insulation, where it can collect and lead to mold damage. Installing insulation after the vapor barrier allows for any moisture to exit the walls for better ventilation.

Plan on cleaning your crawl space at least once a year, though twice a year is ideal. During the cleaning, remove any debris or dust and check for potential issues like pest infestations or water damage. The sooner you catch these issues, the easier (and cheaper) it will be to fix them.

The Windham, NY homeowners’ guide to basement waterproofing services

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