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Top-Rated Foundation repair specialists in Windham - Updated Nov 2026

Avatar for Adirondack Basement Systems, Inc.
Adirondack Basement Systems, Inc.
4.6(
107
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RaiseConcrete Foundation - Repair+1 more

Serving Windham, NY and surrounding areas

Approved (Corporate)

In business since 1998

Free estimates

Warranties offered

"⭐⭐⭐⭐⭐ We had Adirondack Basement Systems come to our home to lift our foundation, and we could not have been happier with the experience. Mikey, the foreman, and Justin, the installer, were absolutely fabulous from start to finish. Both were professional, friendly, knowledgeable, and incredibly efficient. They took the time to make sure the job was done right, kept us informed throughout the process, and made what could have been a stressful home repair feel completely manageable. It is so refreshing to have a crew come into your home who clearly takes pride in their work and also genuinely cares about the customer experience. Mikey and Justin represented Adirondack Basement Systems exceptionally well. We would absolutely recommend both of them, as well as Adirondack Basement Systems, to anyone needing foundation or basement work. Five stars all around. Thank you, Mikey and Justin, for such a positive experience!"
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SaniDry Sedona Dehumidifer
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+9

Response time12 hrs
Response rate100%
17 neighbors recently requested a quote
Avatar for All Dry Basement
All Dry Basement
4.2(
22
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationFoundation Drainage - Install or ReplaceConcrete Foundation - Repair

Serving Windham, NY and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"It’s been 5 months since Todd and his crew encapsulated my crawl space but I wanted to wait to give a comprehensive review of their services and the outcome of their work. The short answer is: I’m thrilled! Here’s the story: Last summer I bought a small home which has a crawlspace. As soon as the weather turned humid I noticed a distinctly musty/earthy odor. When I had central air installed, all it did was exacerbate the situation by blowing the air from the crawlspace all over the house. To say I was distressed is an understatement. I wasn’t sure encapsulation was the answer but after calling around and doing some online research there didn’t seem to be any other obvious solutions. While I had built one new house (full basement) and gut renovated another (slab foundation) I found myself in new territory with an older home (60s) and a crawlspace. Doug came in and did a consultation. I had a lot of questions and deep dove the technical details. I’m sure it was trying for both Doug and Todd, but every question I had was answered promptly and thoroughly (something other companies failed to do). I decided to go for a full encapsulation solution with a commercial humidifier, drain, and some underlayment in particularly rough areas. Todd (and his assistant Kyle) did outstanding work and every unexpected issue they encountered was handled quickly and professionally. When they found rotting wood forms that were left from when the concrete supports were poured, they pulled them out. When they found some rough areas of construction debris around the perimeter, they cleaned that out. And when Todd found some minor seepage in the corner of the crawlspace that he traced it to the outside where a downpipe was punctured and draining too close to the house, he went and bought some new downpipe and repaired it--charging me just for the materials. To say that these guys went above and beyond is an understatement. Any homeowner knows that feeling of having made a horrible mistake and I wasn’t sure the crawlspace issue could be fixed. Not only did Todd and his crew do an amazing job but they put me at ease throughout the process. They were punctual, tidy, thorough and just generally great to work with. I couldn’t recommend them more highly! (Now if only I could find other contractors who are just as good…) P.S. The other reason I waited so long to write a review is that in my particular situation, there is little separation between the air of the crawl space and the rest of my small house. So after it was first encapsulated, there was a strong smell of… well kind of a mix between plastic and dryer sheets. It was not terribly unpleasant but distinct and noticeable (and I’m very sensitive to smells). If anyone else experiences this, I recommend buying a large fan for the crawlspace and using it periodically to move the air from the crawlspace out of the house and move fresh air in. (I bought a cheap contractor fan that pivots upwards and put it on a smart home remote). Over the course of a few months it dissipated and I’m thrilled to report that I don’t notice it at all now."
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+7

Response time1 day
Response rate100%
18 neighbors recently requested a quote
Avatar for Groundworks
Groundworks
5.0(
6
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RaiseConcrete Foundation - Repair

Serving Windham, NY and surrounding areas

Approved (Corporate)

In business since 2019

Free estimates

Warranties offered

"We cannot say enough good about Dylan, Seth and Tim. 3 very hard workers. Lifting heavy heavy loads of concrete and stone up my and down my cellar and porch steps. They never stopped for breaks. Great workers. Respectful and pleasant and knew their job requirements. Very careful with doors, floors etc It?s a messy job. ThankYou"
Foundation
Foundation
Foundation
Foundation
Foundation

+14

310 neighbors recently requested a quote
Grady's Painting Plastering/Construction
2.0(
174
)
Concrete Foundation - Repair

Serving Windham, NY and surrounding areas

Approved

In business since 1969

Free estimates

Emergency services offered

"I needed stucco repair work on an old chimney (and other spots). Grady was meticulous and thoughtful on what approaches and materials would work. Throughout the project they allocated sufficient time for each treatment to cure and inspected the work before proceeding to the next step. Grady started the project with no money down and only required ongoing payments for materials until the project was well underway. The final payment was due only after they did a final inspection. Total project cost was also below other bids."
Response time11 hrs
Response rate100%
Recommended by57%of homeowners
Avatar for SS Excavation
SS Excavation
New to Angi
Foundation Drainage - Install or Replace

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
Avatar for High Tech Construction Co
High Tech Construction Co
4.3(
43
)
Concrete Foundation - RaiseConcrete Foundation - RepairFoundation Drainage - Install or Replace+2 more

Serving Windham, NY and surrounding areas

In business since 1987

Free estimates

Emergency services offered

"My rear facade wall was falling apart, there was apparent deterioration, cracks falling apart. I was recommended to High Tech by our community board. Scaffold was used for this project. They chipped out the 4-story facade and applied wire-mash. First coat of cement was for curing and the second coat was  the finishing coat. The finishing coat was very finely re-finished. The back-wall was waterproofed with thoro-coat.  My roof was leaking as well at multiple places, bubbles had been formed with water seeping in, leaving into my kitchen. The weather was very rainy and stormy at that time and thanks to High Tech they repaired my roof by placing a new layer roof on top of the existing roof and stopped the leak. High Tech remains as one of the top recommended company in our community board."
Facade Restoration - High Tech Construction Co
stoop restoration -high tech construction co
Wood Stoop
Limestone Stoop
brownstone stoop and facade restoration

+20

Recommended by81%of homeowners
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Foundation Repair FAQs, answered by experts

Foundation settlement should be a concern if you notice it happening suddenly and years after construction, if the settlement results in signs of structural damage in your home, or if it happens after a flood, nearby sinkhole, or earthquake. Some signs of severe foundation settlement that should prompt you to call a repair specialist include sloping or uneven floors, large cracks in your foundation, moisture issues or pest infestation in your basement or crawl space, and an uneven roofline.

Tree roots don’t necessarily break through concrete on their own, but they can certainly take advantage of existing cracks, even very small ones. As roots grow, they expand the cracks, making them larger and leading to serious and costly foundation damage. It’s a good idea to have repairs on any foundation cracks you’re concerned about.

The best foundation repair method will depend on the issue you’re having, but usually, foundation instability is best fixed using supportive piers, like steel piers or helical piers. A professional foundation repair contractor or structural engineer should always decide what the best course of action is, and even then, it’s imperative that you also take measures to treat the underlying issue as well, like soil erosion or oversaturation from runoff.

There are many actions that specialists can take to repair a bad foundation. However, just like a car, a specialist will determine whether the cost of repairs is worth it in the long run. In many cases, repairs to the surrounding property—such as regrading your lawn or addressing lawn drainage issues—will also be necessary.

You can strengthen a weak foundation using a few different foundation repair methods, including underpinning, slab jacking, foam jacking, installing carbon fiber support strips, or using a sealant or epoxy crack injection. It’s worth noting that the best way to strengthen your foundation permanently is to fix the underlying issue first and then use a permanent solution to reinforce it. If you’re unsure who to call for foundation repairs, a foundation repair contractor or structural engineer can help find the best solution for your home.

The Windham, NY homeowners’ guide to foundation repairs

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