Top-rated basement waterproofing pros.

Get matched with top basement waterproofing pros in Oswego, IL

Enter your zip and get matched with up to 5 pros

Need a pro for your basement waterproofing project in Oswego, IL?

Select your specific project to find the pro for you.

TRUSTED BY OSWEGO, IL HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon74
    Verified basement waterproofing services reviews

Verified Reviews for Basement Waterproofing pros in Oswego, IL

*The Angi rating for Basement Waterproofing companies in Oswego, 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 Oswego, 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 January 15, 2026

Find Basement waterproofing pros in Oswego

Avatar for Ulb-Dry Waterproofing Inc
Ulb-Dry Waterproofing Inc
4.9(
130
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Oswego, IL and surrounding areas

Approved

In business since 2011

Free estimates

Credit card accepted

"Prepared basement/stairs fore entering/leaving/working, determined site of blockage, broker concrete at blockage site, re-connected drain pipe, recemented area, clean-u."
Exposed Wall
After
Install Drainage mat over Stone
Additional Photos
Clean Wall crack

+2

Response time1 day
19 neighbors recently requested a quote
Recommended by95%of homeowners
Request Quote
Avatar for Everseal Basement, Inc.
Everseal Basement, Inc.
4.5(
130
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Oswego, IL and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

"Everseal handled our waterproofing issue very professionally. I would definitely use them again ... although I hope I never have to!"
Response time1 day
Response rate88%
4 neighbors recently requested a quote
Request Quote
Avatar for Perma-Seal Basement Systems
Perma-Seal Basement Systems
4.4(
1,531
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - InstallBasement Drainage Channels - Repair

Serving Oswego, IL and surrounding areas

Approved

Super Service Award Winner

In business since 1979

Free estimates

Emergency services offered

"We had our basement waterproofed last year and were very happy. This year's project was adding two support beams. Again, we were very happy with the quality of the work and the people we dealt with. Both Gunnar and his team and Perfecto were skilled, efficient, and very professional. Highly recommend."
Thermal imaging
Blower door test
Old insulation removal
New blown insulation
Perma-Seal Attic Insulation

+48

Response time1 day
Response rate100%
53 neighbors recently requested a quote
Request Quote
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 Oswego, 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
245 neighbors recently requested a quote
Recommended by98%of homeowners
Request Quote
Avatar for Best Solutions Basement Repairs & Waterproofing
Best Solutions Basement Repairs & Waterproofing
5.0(
5
)
Foundation, Basement or Crawlspace - Waterproofing / Encapsulation

Serving Oswego, IL and surrounding areas

Approved

In business since 2022

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In 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. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

before
after picture
Response time2 days
9 neighbors recently requested a quote
Request Quote
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 Oswego, IL and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"I had been having water leakage problems into my lower level family room for quite some time. Real Seal correctly diagnosed the problem, quoted a reasonable price, showed up to perform the work per agreed upon date and fixed it permanently. Even with the wet spring this year, I have not had any further water leakage problem. I highly recommend this company"
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
33 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 Oswego, 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
98 neighbors recently requested a quote
Request Quote
Avatar for Copper Sky Plumbing
Copper Sky Plumbing
4.8(
54
)
Basement Drainage Channels - Install

Serving Oswego, IL and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Emergency services offered

Family owned and operated. Owner, David Torres is a registered Master Plumber. Licensed, Bonded & Insured. 20 years of experience. Don't get flooded by plumbing problems! We can fix it. *FREE PLUMBING INSPECTION INCLUDED WITH ANY SERVICE*~ Just mention this ad!\nCopper Sky Plumbing addresses each job with attention to detail and excellent customer service. You can be confident in a company that is honest and fair with the experience to get the job done right the first time.\nAccepting cash, credit cards, check or PayPal. * FINANCING OPTIONS AVAILABLE*

Electric to Gas
Original bathtub before
Demolition has begun
Shower walls are removed, bathtub is sawed in half for removal.
Ready to begin installation of new shower.

+39

Response time11 hrs
Response rate100%
2 neighbors recently requested a quote
Request Quote
Avatar for AccuLevel, Inc. - Rochelle
AccuLevel, Inc. - Rochelle
3.9(
231
)
Foundation, Basement or Crawlspace - Waterproofing / EncapsulationBasement Drainage Channels - Install

Serving Oswego, IL and surrounding areas

Approved

In business since 1996

Free estimates

Warranties offered

"This is a great company to use in making a 141 year old basement waterproof. I look foreward to having a waterproo basemant. Craig was pleasant and went the extra mile to make the experience great."
Basement Waterproofing and Drainage Channels
Drainage Channel Install
Dimple Board and Drainage Channel Install
Dimple Board Closeup Example
Cross Section Example Waterproofing Installation

+19

11 neighbors recently requested a quote
Recommended by82%of homeowners
Request Quote
Avatar for Four Seasons Heating & Air Conditioning
Four Seasons Heating & Air Conditioning
4.3(
3,297
)
Basement Drainage Channels - Install

Serving Oswego, 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
35 neighbors recently requested a quote
Recommended by86%of homeowners
Request Quote
...
Showing 1-10 of 175
Basement Waterproofing questions, answered by experts

Water damage always poses a primary risk of mold and mildew, but growth is not guaranteed. The chances of mold developing depend on several factors, including the severity of the damage and how quickly the area is cleaned and dried. To prevent mold, you must act quickly—ideally within the first 24 hours. Clean up all water and thoroughly dry the affected area. If the damage is extensive, you were unable to address it immediately, or you suspect mold has already started to grow, it is best to assume it is present and hire a professional mold inspector or removal expert to assess the situation.

Sandbags are the most common and efficient way to create a flood barrier at home. Some local authorities pass them around to homes before the risk of a flood. Otherwise, you can use flood-proof house materials, like burlap or woven plastic bags, to make sandbags and fill them with sand or cat litter. Make sure that when you stack them, they’re tightly laid on top of each other, creating the effect of a firm wall against accumulating water.

The best way to ensure the ground next to your home’s foundation drains properly is to divert water away from it as much as possible. While a flood wall can stop water from entering the house, gutters and spouts can help direct rainwater and melting snow away from the foundation. Keep your gutters as clear as possible from dead leaves and other yard debris so they can effectively divert water from your house. Add extenders to the spouts so the water runs out and away from your home, not into the surrounding soil.

Crawl space foundation problems can stem from a few different issues, but the most common are moisture and water problems and soil instability. Moisture and water issues are often a result of poor drainage, which can lead to water intrusion and soil expansion and contraction, leaving your foundation under added stress. A few things can cause soil instability, including poor drainage, karst landscapes and resulting sinkholes, and poorly compacted soil during construction.

The foundation repair that will work best varies based on the extent of the damage, the underlying cause, soil conditions, weather conditions, and more. Permanent foundation solutions like underpinning and exterior drainage solutions are better than temporary fixes that don’t address the source of the issue. Some examples of more temporary solutions include mudjacking or slabjacking, waterproof paint, and dampproofing. The best course of action is to have a reliable foundation specialist inspect your issue, treat the underlying problem, and restabilize your foundation.

The Oswego, IL homeowners’ guide to basement waterproofing services

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

See all articles