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TRUSTED BY CORNWALL, PA HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon26
    Verified foundation repairs reviews

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

Avatar for Highlander Waterproofing, Inc
Highlander Waterproofing, Inc
4.2(
163
)
Foundation Drainage - Install or ReplaceFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornwall, PA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"I signed up to have a modular log home built on an existing foundation. The builder had a number of specifications that needed to be met to get the foundation ready for the new house. I contacted 8 other companies, but no one could help me with my long list of tasks. When I finally got ahold of Highlander Waterproofing, I started by telling them I was a problem child. I listed all the work that needed to be done and Mike told me that nothing on my list sounded sounded scary. I got a couple of visits from Mario, the manager, and Mike, the senior engineer, and one of their senior job bosses. They were all knowledgeable, helpful, positive, and suggested that I use steel supports instead of concrete to save space. Work started in August when Dewey and JT started knocking off the top 2 courses of block. "The Gents" - Dewey (the job boss) Devon, Jimmy, Matt, and Dave - did wonderful work. Because of Murphy's Law, we had to knock some walls down and rebuild them because of bowing, and we ended up adding an internal French Drain. They set rebar, poured tons of concrete, dug footers, put up steel support beams, installed glass block windows, put down sill plates, and rebuilt the front where the garage doors will be. I cannot even begin to say how pleased I am with the work they did. And they were a lot of fun to boot! They let me video them daily, tease them mercilessly, and they had the good grace to laugh when my dog made off with their breakfast jerky. There is still some work to do when the house actually gets here in April - insulating the outside wall, backfilling, putting the sump pumps in, rebuilding the center wall, and digging footers for the porch. I have absolute confidence in Highlander Waterproofing and "The Gents." I would recommend them highly and with no reservations to anyone who needs foundation work. I will add to this post with the final pictures in April."
Before and After
After Pic of Basement Wall Rebuild
After Pic of Basement Waterproofing Project
After Pic of Basement Waterproofing Project
After Pic of Basement Waterproofing Project

+18

Recommended by90%of homeowners
Avatar for Dry Tech Waterproofing Solutions
Dry Tech Waterproofing Solutions
4.4(
276
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornwall, PA and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Free estimates

Emergency services offered

"Excellent job repairing a crack in our poured concrete basement wall. Had to dig down to the bottom of the foundation, seal the crack, and back fill the hole - clean up was so good you didn't know work was even done. Very satisfied with the initial estimator, the job foreman, and the crew. The price was competitive with other estimates we received. Would recommend this company."
Digging out the area
Filling in the crack
During
Insulation board is placed over the Water Shield
Water Shield

+24

Response time8 hrs
Response rate99%
172 neighbors recently requested a quote
Basement Waterproofing Specialists
4.0(
597
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - RepairPoured Concrete Wall - Repair

Serving Cornwall, PA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"We had 2 foundation cracks running from corner of basement window to the floor. Their recommendation was not to just fill in the cracks, as others suggested, but to also reinforce the structural integrity of the foundation with a solid steel plate bolted over the repaired crack. That approach made much more sense to me than the other recommendations I'd received. I hired them and they were onsite within 2 days and completed all work in a single day. We've since had excessive rain and the repairs have held up and the basement is still dry."
Foundation Repair
 Before and After Stone Work
 Mirra Drain
 Mold Remediation
 Clean Work Areas

+67

Response time11 hrs
279 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for MALCO LANDSCAPE INC
MALCO LANDSCAPE INC
4.6(
9
)
Poured Concrete Wall - Repair

Serving Cornwall, PA and surrounding areas

Approved

In business since 1997

Free estimates

Credit card accepted

Landscaping is our specialty, and we know how to make your property look exceptional according to your specific design preferences. Don't hesitate on accentuating the uniqueness of your residential, commercial, or industrial landscape. Call now for your FREE design estimate!

Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+27

5 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Liberty Basement Systems
Liberty Basement Systems
5.0(
1
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationConcrete Foundation - Repair

Serving Cornwall, PA and surrounding areas

Approved

In business since 1987

Free estimates

Emergency services offered

"Seamless experience from start to finish. Todd was super knowledgeable and through on the consult/ sales end. The install team made quick work of the project. Their work was top notch and my basement is now completely dry. I would recommend their services to anyone with basement or foundation issues."
Stair-step cracks on your foundation wall are a common sign of foundation problems caused by settlement and soil issues.
During heavy rainfall, water leaked into the basement through the walls.
Bottom beam anchored to the floor.
SaniDry Sedona is the world's most efficient, high-performance dehumidifier and filtration system and is a crucial element in basement waterproofing and crawl space repair. As a result of its compact size, it occupies less space in a basement and can easily be tucked away in a crawl space. The unit eliminates damp, musty odors by drying and filtering the air, and it costs less to run than other dehumidifiers. It filters mold spores, dust mite droppings, dust and other particles, and it keeps hu
The wall height is measured to cut PowerBrace beam to its length and the bottom of the beam is anchored to the floor. The top bracket is installed and the beam is secured. This patented design can be straightened over time, eliminating future bowing, buckling, or inward tilting movements.

+18

34 neighbors recently requested a quote
Recommended by100%of homeowners
Hydro-Solutions, Inc.
3.2(
3
)
Foundation Drainage - Install or ReplaceFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Cornwall, PA 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 J Donisch Contracting LLC
J Donisch Contracting LLC
New to Angi
Foundation Drainage - Install or Replace

Serving Cornwall, PA and surrounding areas

Approved

In business since 2023

Free estimates

Emergency services offered

J Donisch Contracting 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.

1 neighbors recently requested a quote
Hutchinson Excavating, Inc.
New to Angi
Foundation Drainage - Install or Replace

Serving Cornwall, PA and surrounding areas

Approved

In business since 1999

Free estimates

Offers commercial services

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. \nIt is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. \nIn order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. \nOur reputation is based on service, safety, and quality, regardless of how large or small the job.

Response time3 hrs
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Foundation Repair FAQs, answered by experts

Yes, slab leaks are fairly common, especially in older homes and places that are prone to earthquakes which can move home foundations.

Cracks, shifting, or uneven floors indicate potential foundation issues.

Minor slab leaks normally take around three hours to access and fix, provided the leak is in an accessible location. However, a more extensive leak or a leak in a hard-to-reach location can take several days to fix, depending on the resulting damage. You might also want to consider the timeline for the build-back if the leak damages building materials like flooring or cabinets, which can take several weeks, including delivery of the materials.

Many horizontal cracks in home foundations result from water and soil pressure from outside of the building or from a footing that is shifting. Under those circumstances, horizontal cracks are a structural problem that requires repair before they become worse and more difficult to fix. However, in very specific cases, thin horizontal cracks may simply be a cosmetic blemish due to concrete shrinkage.

You could DIY the work, but unless you have plumber’s knowledge for identifying and fixing a slab leak and specialized equipment in your tool shed, attempting to DIY your slab leak repair isn’t a good idea. It’s simply not something that the average homeowner can take on themselves, regardless of how many successful DIY projects they’ve got under their belt. You could, however, do something simple like foundation waterproofing yourself to save some money on the post-repair work.

The Cornwall, PA homeowners’ guide to foundation repairs

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