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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

"Gregg and his team were amazing. They work fast but efficient and very neat. His team is very polite and courteous. Gregg also made suggestions for utilizing and improving my basement. I cannot say how pleased I am with his work."
30 YEAR OLD BASEMENT
AFTER WATERPROOFING
Vapor Barrier
Why Your Basement is Wet and Damp
Thies Is How We fix

+1

Response time8 hrs
12 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 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
21 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for The A Team Waterproofing LLC
The A Team Waterproofing LLC
5.0(
5
)

Serving Cornwall, NY and surrounding areas

Approved

In business since 1999

Free estimates

Credit card accepted

Waterproofing, Retaining Walls, Pavers and Concrete. The A Team Waterproofing in Harriman, New York specializes in high-quality interior and exterior waterproofing for residential and commercial properties. In every project, I use only the best products available on the market. These include PolyDrain, perforated PVC piping, filter fabric, and Thoroseal items. Additionally, I am able to match the price offered by other contractors in my area.

Project Photos
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Project Photos
Project Photos

+14

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

"When it rained my basement would get 2-3 inches of water. Tim and his team redirected all of the drain pipes (5 in all), reshaped the slope of the land surrounding my house, planted grass seed, and left the yard spotless. Now my basement is drier than Arizona in mid-July. These guys are pros, they finished in a day. It was a pleasure to see these men work! Their price was more than fair. You can't go wrong with DIGGS! Thank you, Tim!"
Newburgh
Newburgh
Montgomery
Liberty
Saugerties

+1

Response time1 day
12 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."
13 neighbors recently requested a quote
Avatar for Expediant Environmental Solutions, LLC
Expediant Environmental Solutions, LLC
3.9(
438
)

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
225 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
15 neighbors recently requested a quote
Recommended by83%of homeowners
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Basement Waterproofing questions, answered by experts

When considering finishing your basement, take into account a few pros and cons:

Pros

  • Can increase the value of your home

  • Separate space from the rest of the house 

  • Customize and personalize the basement to suit your needs and style

  • Increase the amount of living space in your home

Cons

  • May not regain enough value to cover the cost of finishing

  • Lack of natural light if it’s below ground level

  • Moisture or flooding can cause costly damage

  • Installing plumbing and electrical can be messy and costly

You should take care of any sign of water in your basement, whether it’s dampness after heavy rain or puddles of water on the floor. Besides potentially causing a health hazard, the moisture can damage your home’s structure and foundation. Furthermore, mold can grow quickly and spread throughout the rest of your home. With mold remediation costs ranging between $1,200 and $3,400, it’s best to avoid mold issues by fixing the leak.

It’s not the number of weep holes that should be of concern to builders but rather their spacing. Weep holes are usually spaced anywhere between 16 inches on center when using round tubes or wicking materials and 24 inches on center when using open-head joints. This is a more conservative spacing than the 33-inch maximum spacing on center that’s mentioned in the International Residential Code. All in all, the total number of weep holes a brick exterior should have will depend on the size of the structure.

A leak under your foundation from a water supply line or sewage line is likely to lead to water pooling on certain areas of your property during rainfall, abnormally fast-growing or green grass in certain sections of your lawn, and differential settlement of your foundation, which can result in large foundation cracks, windows and doors failing to operate properly, a wavy or sloping roofline, or damages or irregularities in your interior walls, including cracks and bulging. If it’s a plumbing line embedded in your slab, you’ll also likely notice above-average water bills.

Yes, water and water vapor can seep through cracks in your basement floor, which means you should address all basement floor cracks, even if they don’t indicate structural issues. Sealing settling cracks and shrinkage cracks is a good idea to keep water and moisture outside where it belongs. Doing so can improve your indoor air quality, reduce the risk of mold growth, make your home more comfortable, and help prevent pest infestation.

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.