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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%
177 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
284 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, sustainable mixes and sealants minimize environmental impact.

A sinking foundation can be lifted, most often by installing piers to re-level and support the weight of the house. Depending on the cause and extent of the sinking, other methods to lift a foundation include underpinning and mudjacking. Consult a foundation repair pro to determine the best way to lift your sinking foundation. 

You can seal a concrete slab by cleaning the surface, filling in any cracks, etching the surface, applying a sealer, and letting it dry. Concrete slabs don't typically need sealing, but you can use a topical concrete sealer if you notice signs of water damage. If you haven't already fixed the cause of the leak, then you'll want to repair the plumbing before you seal a concrete slab.

Cement companies offer a wide variety of services, including delivering and pouring concrete for home foundations, walkways, patios, driveways, concrete steps, pools, pool decks, and more, plus concrete repair and patching. Most companies also have the ability to demolish and haul away old concrete landscaping features. It’s a good idea to reach out to a few different companies before hiring to make sure you choose one that can tackle the entirety of the project you have from start to finish. This method will typically save you some money over hiring multiple contractors.

Concrete can crack from general wear, improper installation, or in response to uneven support from the soil underneath. Small, thin cracks on the surface of aging concrete are usually a result of normal wear and tear, while cracks on new concrete more likely indicate a problem with installation. Larger cracks or uneven steps can signify a much more severe issue. A concrete contractor should be able to diagnose the cause and repair concrete cracks for you.

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.