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Best basement waterproofing pros near Saint Thomas, PA

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Top-Rated Basement waterproofing pros in Saint Thomas - Updated Nov 2026

Basement Waterproofing Specialists
4.0(
597
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Saint Thomas, PA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"I had a serious basement flooding problem. I had my basement waterproofed 2 times. it didn't work! Basement Waterproofing Specialists installed a commercial drain system and after 2 years I have never had a drop of water they are AMAZING, thank you Basement Waterproofing specialists YOU ARE THE BEST!"
Foundation Repair
 Before and After Stone Work
 Mirra Drain
 Mold Remediation
 Clean Work Areas

+67

Response time11 hrs
248 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Groundworks
Groundworks
3.7(
362
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Saint Thomas, PA and surrounding areas

Approved (Corporate)

In business since 1975

Free estimates

Warranties offered

"This is the second time we have hired Groundworks (formerly Bakers Waterproofing) to perform work at our house. The first project was in 2017 when we had the waterproofing system installed. We called Groundworks a few weeks ago to get an estimate on lifting our front sidewalk and stairs that have sunk a lot over the past year. The steps had sunk to the point that the railings were not connected to the house, making it very unsafe for anyone coming into the front of our home. Aaron Lenker & Corbin Gillichbover were very professional and knowledgeable when they arrived to assess our sidewalk and steps to lift them. They left our sidewalk and the surrounding area better than when they arrived. Our steps and sidewalk are now level, and the railings are securely attached to the house again. We are thrilled! I would highly recommend Groundworks if you need a basement waterproofing system or any concrete lifted."
Basement
Basement
Basement
Basement
Foundation

+16

Response time11 hrs
558 neighbors recently requested a quote
Recommended by85%of homeowners
Avatar for Liberty Basement Systems
Liberty Basement Systems
5.0(
1
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Saint Thomas, 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
Avatar for Trim-Tek Plumbing
Trim-Tek Plumbing
4.1(
9
)
Basement Drainage Channels - Install

Serving Saint Thomas, PA and surrounding areas

Approved

In business since 2002

Free estimates

Emergency services offered

"We were fortunate to employ Trim-Tek Plumbing to repair a leaking supply line in an upstairs bathroom. Although this project was not a dire emergency, there were visible water stains on the ceiling in the lower level. Eli arrived exactly on time, diagnosed the problem quickly, and repaired the leak in a short time. Eli was both professional and personable. If we encounter any future plumbing problems, we will contact Trim-Tek. Martin C."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+5

Response time1 day
Response rate100%
8 neighbors recently requested a quote
Avatar for MD Waterproofing & Radon Reduction, Inc.
MD Waterproofing & Radon Reduction, Inc.
3.9(
115
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Saint Thomas, PA and surrounding areas

In business since 1991

Free estimates

Emergency services offered

"I would recommend MD Waterproofing to everyone I know. I can't praise them enough. They were so professional and sensitive to my every need. They had a supervisor who was so knowledgeable about this labor sensitive job, and the workers were courteous and hard working. When the job was completed in two days, everything was put back in place and the basement was cleaner than when they started! I am so pleased I used this company!"
Excavation
Finished Product
PVC pipe installation
Finished Product
Draintile Installation

+4

Response time3 days
Response rate94%
Recommended by87%of homeowners
Avatar for Thompson's Basement Waterproofing
Thompson's Basement Waterproofing
4.1(
226
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Saint Thomas, PA and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"The work was messy but The crew was very hard working. The jackhammer hit a pipe under our sink. They came back to fix that. While the amount of water was drastically reduced in our basement, I will never feel secure enough to finish it. They have returned 4-5 times to troubleshoot the problem because their service has a lifetime guarantee. The last time they came (2 years after original job) they added another sump pump and redug one of the ditches. It seems to have helped but I still see a very small amount of water seeping through a few cracks in the floor. With two small kids in the house, it's exhausting to keep having service people in and out of your house. I'm not happy it took so many visits, but I think overall that they were fairly quick in responding to my calls and getting out to our house."
SUMP PUMPS
CRAWL SPACE AND REPAIR
FOUNDATION REPAIR
MOLD REMOVAL
Recommended by82%of homeowners
Avatar for Egress Windows by Cottrell
Egress Windows by Cottrell
3.8(
107
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Saint Thomas, PA and surrounding areas

In business since 2002

Free estimates

Emergency services offered

"Denny recommended coating the walls with epoxy to seal the blocks and also an E•Z Breathe® Air Ventilation System. He and his coworker did a fine job, even going out of the way to coat the wall behind the oil tank. Due to the new ventilation system, we've already seen an improvement in the air quality in our home and notice that the basement smells fresh now. And we no longer have to run a dehumidifier! We'll certainly call them again if any further work is needed."
Handymen Project
Windows - Egress Project
Handymen Project
Windows - Egress Project
Windows - Egress Project

+18

Recommended by76%of homeowners
Avatar for Mid Atlantic Waterproofing
Mid Atlantic Waterproofing
3.5(
45
)
Basement Drainage Channels - InstallBasement Drainage Channels - RepairFoundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Saint Thomas, PA and surrounding areas

In business since 1999

Free estimates

Warranties offered

"Don't be pressured into having the work done on their schedule. I had way too much "stuff: in my basement, that is now pushed to the center of the basement and even though is was covered with plastic, everything is covered with white dust. As far as the finished drainage work, I'm very pleased."
 Before
Before
Before
  After
After

+30

Recommended by57%of homeowners
Showing 1-10 of 32
Basement Waterproofing FAQs, answered by experts

In most cases, it is safe to live in a home with minor foundation problems, but you should not let the issues persist. Virtually all foundations have small cracks from normal settlement, which are not a structural concern but should be sealed to prevent water intrusion. However, major damage—such as large structural cracks, sinking foundations, or bulging walls—can make a home unsafe. Other issues that can pose safety and health risks include poor indoor air quality from mold or pests, uneven floors, and rotten beams or joists. It is always best to have a foundation repair expert or structural engineer inspect any issues to determine if your home is safe to live in.

Damp proofing and waterproofing are both methods to help keep your basement dry. Damp proofing keeps soil moisture from entering your basement, which is helpful since your basement is underground. Waterproofing, however, keeps both soil moisture and liquid water out of the basement, which is essential, especially if you live in a wet environment. Because it’s more protective, waterproofing typically costs more than damp proofing.

If foundation problems are not fixed, they will likely worsen over time, leading to more complex and expensive repairs. Neglecting a damaged foundation can cause a range of issues, including:

  • Structural Damage: Minor problems like small cracks can escalate into major structural issues. This can damage the house above the foundation and, in severe cases, lead to foundation walls caving in or a total collapse.

  • Water Damage and Pests: Moisture and water intrusion can cause flooding, mold growth, and pest infestations.

  • Health and Safety Risks: Mold can lead to poor indoor air quality and other health risks, while structural instability poses a significant safety hazard.

  • Reduced Home Efficiency: A compromised foundation can negatively impact your home's energy efficiency.

To avoid these escalating problems and costs, it's best to hire a foundation repair company to address any issues as soon as you become aware of them. The earlier problems are discovered and fixed, the lower the repair cost will likely be.

A moisture or vapor barrier helps separate the warm air inside your home from the cold air outside of it. Without it, your walls could collect condensation, mold, or other damage. Check your local building codes to see if including an interior vapor barrier is necessary for your building project or renovation, especially for rooms that are likely to be humid, like bathrooms.

You should plan on waiting at least a year and ideally two to three years after construction before finishing your basement. This will give the foundation time to settle in response to the weight of your home and the expansion of the surrounding soil. You can then repair your foundation and seal any cracks as needed before finishing it to reduce your risk of future leaks or other issues.

The Saint Thomas, PA homeowners’ guide to basement waterproofing services

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