Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Cornwall, NY

Enter your zip and get matched with up to 5 pros

TRUSTED BY CORNWALL, NY HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon21
    Verified basement waterproofing services reviews

Find Basement waterproofing pros in Cornwall

Avatar for Contractors' Waterproofing
Contractors' Waterproofing
4.8(
62
)

Serving Cornwall, NY and surrounding areas

Approved

Super Service Award Winner

In business since 1985

Free estimates

Credit card accepted

"Question above did not allow me to specify the nature of the waterproofing that was done. He stopped water from seeping through the floor of the den. Gregg is old school, a man of his word, not primarily out for profit and truly committed to getting the job done even if repeat visits make it not cost effective for him."
30 YEAR OLD BASEMENT
AFTER WATERPROOFING
Vapor Barrier
Why Your Basement is Wet and Damp
Thies Is How We fix

+1

Response time8 hrs
16 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Basement Systems Of New York
Basement Systems Of New York
4.3(
42
)

Serving Cornwall, NY and surrounding areas

Approved

In business since 1993

Free estimates

Warranties offered

"The foundation was shifting. They drilled holes, put anchors. They put in a moisture barrier. They totally remedied it. They were professional. They have a whole team of architects. They were great! I recommend them to anyone who has basement problems. Very timely, professional."
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
16 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Diggs Building Technologies Corp.
Diggs Building Technologies Corp.
4.9(
40
)

Serving Cornwall, NY and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Guys came in and worked. No lollygagging or long breaks or any of that just plowed through on a dirty two-day job and their work made me feel a heck of a lot better about the structure of our home. Did great work. The only complaint is that they did not repair a small basement window casing that they pried open to get materials to the basement. I am sure had I contacted them they would have come back and fixed it, but it was not anything nice to begin with and I was able to repair myself pretty easily so I never even brought it to their attention."
Newburgh
Newburgh
Montgomery
Liberty
Saugerties

+1

Response time1 day
9 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Tigasi Home Improvement LLC
Tigasi Home Improvement LLC
5.0(
10
)

Serving Cornwall, NY and surrounding areas

Approved

In business since 2020

Free estimates

Credit card accepted

"Fausto and his team were great! I would have no hesitation in using them again. I had the attic space of a two-family building insulated with blown-in cellulose. I had already used Tigasi Home Improvement for a smaller Rockwool basement ceiling job and they were very reasonable in price, thorough and clean so I turned to them for this project. Again they gave me what I thought was a reasonable quote for removing old insulation, sealing gaps and then insulation, and Fausto explained the process well. He was very patient and understanding with my tenants' concerns, as access was via a drop down ladder in one unit's hallway. I also wanted an extended platform for storage in the attic and they were able to sort this out for a reasonable price.The team kept the job site extremely tidy and they were pleasant throughout. I would not hesitate to use Tigasi gain for another project. Plus I found them to be just really, really nice guys! A before pic and some after here."
11 neighbors recently requested a quote
Avatar for Expediant Environmental Solutions, LLC
Expediant Environmental Solutions, LLC
3.9(
437
)

Serving Cornwall, NY and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Was able to schedule a free consultation immediately and they looked through the basement to talk through possible mold issues. Turned out we didn’t have a mold problem but he answered all of our questions and was very kind!"
Response time2 days
250 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for The Basement Transformer
The Basement Transformer
3.3(
8
)

Serving Cornwall, NY and surrounding areas

Approved

In business since 2016

Free estimates

Warranties offered

The Basement Transformer is proud to provide innovative basement waterproofing, basement finishing, crawl space, and foundation repair services to improve the comfort and safety of your home. We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We pride ourselves on the quality of our work as well as our commitment to outstanding results. We look forward to building lasting relationships and guarantee your satisfaction!\n

Basement Transformation
Unfinished Basement
Response time1 day
14 neighbors recently requested a quote
Recommended by83%of homeowners
Hydro-Solutions, Inc.
3.2(
3
)

Serving Cornwall, NY and surrounding areas

Approved

In business since 2013

Free estimates

Emergency services offered

Hydro-Solutions, Inc., are experts in Basement Waterproofing and Foundation Repair. We are a locally owned and operated company, that values honesty and integrity in all aspects of our business. Our dedicated team of professionals, have many years of hands on experience, to provide innovative ideas and suggestions tailored to your projects. Our services are customized to your individual needs, paying close attention to the details of each project that we are involved with. Please feel free to contact us today!

Response time5 hrs
Recommended by100%of homeowners
Avatar for DeBella Seal Coating
DeBella Seal Coating
3.8(
3
)

Serving Cornwall, NY and surrounding areas

Approved

In business since 2015

Free estimates

Offers commercial services

"The owner is very courteous, walked us through every step, no surprises and it was a big job. Fifty percent cheaper than other estimates, and the workman he had on the team were a pleasure. From step one to completion everything was as he had said it would be, great guy and a great company. They were fantastic."
Response time1 day
6 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Valley Roofing and Construction, LLC
Valley Roofing and Construction, LLC
5.0(
1
)

Serving Cornwall, NY and surrounding areas

Approved

In business since 2012

Free estimates

Valley Roofing and Construction, LLC is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

Response time1 day
Response rate95%
5 neighbors recently requested a quote
...
Showing 1-10 of 115
Basement Waterproofing questions, answered by experts

Most people consider a French drain to be one of the most effective solutions for foundation leaks, but it’s not always a standalone solution. French drains will help keep water away from your foundation to reduce the risk of leaking and structural damage from soil expansion, but depending on your foundation type and location, you might need other systems or techniques—like soil gradation and gutter and leader installation—to resolve the underlying problem.

Crawl space encapsulation typically lasts between 10 to 20 years. If you experience a catastrophic event, like a flood, or poorly encapsulate your space with low-quality materials, it may only last a decade. Otherwise, as long as you properly maintain your crawl space, a high-quality encapsulation can last more than 20 years.

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.

In some circumstances, foundation refacing or repair may be a better option for your home than sealing a foundation. It’s always a good idea to take steps to prevent moisture problems in your foundation, but if there are any structural concerns, those will usually need to be fixed first. When dealing with foundation issues, it’s a good idea to get a professional opinion so you can avoid bigger problems down the road. 

External pressure on the basement wall can cause it to bow inward. Soil, heavy with water saturation, is commonly the main culprit. The soil exerts immense pressure on the wall, causing it to fail, at least partially. This is known as hydrostatic pressure—these situations can occur after rainfall or simply due to regular groundwater presence and may be temporary or more permanent.  

The Cornwall, NY homeowners’ guide to basement waterproofing services

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

What do you need done? We’ll find top pros.
  • 🌱 "Mow a small front yard"
  • 🛠 "Fix a leaking pipe under the sink"
  • 🏠 "Repair shingles on an asphalt roof"