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TRUSTED BY THORNTON, IL HOMEOWNERS

  • Average homeowner rating star icon4.3
    Average homeowner rating
  • Verified reviews icon139
    Verified basement waterproofing services reviews

Verified Reviews for Basement Waterproofing pros in Thornton, IL

*The Angi rating for Basement Waterproofing companies in Thornton, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

*The HomeAdvisor rating for Basement Waterproofing companies in Thornton, IL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Basement Waterproofing needs.

Last update on August 18, 2026

Find Basement waterproofing pros in Thornton

Avatar for U.S. Waterproofing
U.S. Waterproofing
4.2(
597
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Thornton, IL and surrounding areas

Approved

In business since 1957

Free estimates

Warranties offered

"Called company on Monday and got an appointment for an inspection on Wednesday. That following Monday, the technician arrived and went through each step is sealing off the concrete foundation to the water leak. The fix worked well and was put to the test with the recent record rains. Not one drop of water came into the basement."
Radon Mitigation
Radon Mitigation
Basement Waterproofing
Basement Waterproofing
Response time1 day
Response rate100%
31 neighbors recently requested a quote
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Avatar for Perma-Seal Basement Systems
Perma-Seal Basement Systems
4.4(
1,520
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Thornton, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1979

Free estimates

Emergency services offered

"I must say Victor and his team of professionals from Perma Seal did an emaculent job, explained every little detail to my understanding and l didn't have to keep asking questions..l would definitely recommend him and his team to anyone who needs their home waterproofed, and l will request him and his team if l ever need similar work again..5 STARS TO VICTOR AND HIS TEAM*****"
Thermal imaging
Blower door test
Old insulation removal
New blown insulation
Perma-Seal Attic Insulation

+48

Response time1 day
Response rate100%
55 neighbors recently requested a quote
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Avatar for The Real Seal LLC
The Real Seal LLC
5.0(
252
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - RepairBasement Drainage Channels - Install

Serving Thornton, IL and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"My husband and I had a wonderful experience with The Real Seal in July 2024. They fixed a bowing foundation and waterproofed the basement for future finishing. Their team was prompt, respectful, organized and thoroughly educated us on the drainage tile system, installation process and prevention. Thank you, Real Seal for being the flawless first step to our dream basement/family space!"
Before and After Crack Repair
I Beam Supports
Polyjacking in Darien
Our Carbon Fiber Straps Repair Before, During, and After
Crack repaired with Carbon Fiber Staples

+39

Response time10 hrs
350 neighbors recently requested a quote
Recommended by98%of homeowners
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Avatar for The Real Seal, LLC
The Real Seal, LLC
4.5(
38
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Thornton, IL and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"I am extremely pleased with the work that Real Seal Performed. They were right on time, curtious, performed everything as agreed and did a good quality work. The quality was tested quickly, since it rained real hard that same day, and we have stayed dry."
Interior Foundation Crack Repair
Exterior Drain Tile System
PHCC 1730 Battery Backup System w/ 1033 sump pump
Interior Foundation Crack Repair
Cut-out of Interior Drain Tile System

+74

Response time10 hrs
31 neighbors recently requested a quote
Recommended by94%of homeowners
Request Quote
Avatar for Chicago Basement Systems
Chicago Basement Systems
5.0(
8
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Thornton, IL and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

"Devin Rhoades was excellent at explaining in detail about our needs and possibilities in fixing our support wall and encapsulating our crawl space and draining the water away from our house. He was well informed on all aspects of our situation. I would recommend Devin and Chicago Basement Systems to anyone needing help with basements or crawlspace issues."
Crack Repair Before
Crack Repair After
83 neighbors recently requested a quote
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Avatar for Best Price Sewer and Plumbing
Best Price Sewer and Plumbing
4.9(
137
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Thornton, IL and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

Welcome to Best Price Sewer and Plumbing, your number one plumbing contractor. We pride ourselves on our excellent customer service and the attention to detail we put into every job we do. Serving all of the CHICAGOLAND area!

Response time5 hrs
12 neighbors recently requested a quote
Recommended by96%of homeowners
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Avatar for A-1 Patrick's Sewer & Pipe Services
A-1 Patrick's Sewer & Pipe Services
4.6(
188
)
Basement Drainage Channels - Install

Serving Thornton, IL and surrounding areas

Approved

In business since 2010

Free estimates

Emergency services offered

"We called Patrick to fix a sewer smell in our basement. After digging out a section of the floor, he found a pipe installed by the previous owner that had never been correctly attached to the sewer main. He and his crew worked on a Friday and Saturday to fix the issue. They jackhammered out the floor, dug up the old pipe and replaced it. Patrick was very attentive and showed me all the steps he was taking, carefully explaining everything that needed to be done. Cleaned up afterward and finished the job without issue. Highly recommended."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+1

Response time2 days
Response rate100%
Recommended by94%of homeowners
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All Service Calls, LLC
4.5(
41
)
Basement Drainage Channels - Install

Serving Thornton, IL and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

Here at All Service Calls LLC, we pride our company on reliability, great communication, integrity and quality work. We strongly believe in giving our absolute best in all of our projects, no matter how big or small. We are experts in our trade and will always keep you educated on your particular task or project. We look forward to earning your business!

Response time3 hrs
Response rate99%
6 neighbors recently requested a quote
Request Quote
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,290
)
Basement Drainage Channels - Install

Serving Thornton, IL and surrounding areas

Approved (Corporate)

In business since 1971

Free estimates

Emergency services offered

"Had a flood in basement when sump pump failed..  They installed new sump pump."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time9 hrs
23 neighbors recently requested a quote
Recommended by86%of homeowners
Request Quote
Avatar for Flatley Plumbing Express
Flatley Plumbing Express
4.8(
8
)
Basement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Thornton, IL and surrounding areas

Approved

In business since 1960

Free estimates

Emergency services offered

At Flatley's Plumbing Express, experts work around the clock to make sure your plumbing and sewer systems are up and working as expected. If you have any issues with your sewer system, or need general plumbing service work - don't hesitate to call us for help.

Response time10 hrs
Response rate93%
23 neighbors recently requested a quote
Request Quote
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Basement Waterproofing questions, answered by experts

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.

No, you don’t want your crawl space to be wet because water and even moisture in the air under your home can attract insects and rodents, decrease your indoor air quality, increase your energy bills, promote mold growth, and even lead to structural damage. If you notice any signs of water or humidity in your crawl space, you should get the issues addressed immediately by contacting a professional. They can remove moisture and will know how to waterproof your basement to prevent ongoing problems.

Flooded basement cleanup can take anywhere from a few days to several weeks, depending on the extent of water damage, the type of water involved, and the need for repairs or mold remediation. Severe cases with structural damage or extensive mold may require longer timelines. Quick action and professional help can speed up the process and reduce overall damage.

The primary reason homes have crawl spaces is so the foundation can reach down below the frost line to avoid dangerous soil movement and structural damage when the ground freezes. They’re more popular in colder climates where the ground freezes down to a few feet, and slabs are most popular in warmer areas where there is no frost line. Crawl spaces also provide a space for utility lines to run where they’re at less of a risk of freezing.

Yes, you can add a bathroom to an unfinished basement, but you’ll want to take proper precautions if doing so. As with any bathroom addition, you’ll need to make sure that it’s approved by local building authorities first. With unfinished basements, you especially need to keep an eye on proper ventilation practices.

The Thornton, IL homeowners’ guide to basement waterproofing services

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

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