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Due to the recent severe weather in the Chicagoland area, we are experiencing an extreme number of requests. Rest assured that the Perma-Seal team is working tirelessly to return all inquiries.
At times like these, it is tempting to choose the first contractor who can respond and offer a quick fix. Unfortunately, waterproofing is not a commodity and there is a great disparity in the quality of repair methods, warranties and pricing. Perma-Seal has worked very hard over the last 35 years to provide the BEST VALUE, combining the most permanent repairs and simple transferable warranties at a fair price (which is why we are in greater demand than others right now). You can have confidence with our company that you'll only pay for a repair once; I can assure you that your patience will be rewarded!

Your Basement Solution in Chicago

Perma-Seal has been the most trusted basement waterproofing contractor and foundation repair specialist serving Chicago and Northwest Indiana for over 35 years. Our informative video featuring Perma-Seal Founder, Roy Spencer and National Home Improvement Expert, Lou Manfredini will help you understand how and why Perma-Seal is dedicated to providing you with a superior customer experience and the greatest value for your home.

We’re the experts when it comes to wet basements, water seepage, leaking wall cracks, structural foundation problems, damp, moldy crawl spaces and municipal sewer backup. We are pleased to now offer plumbing services to serve the needs of our valued clients.

Browse through our site to find information as to why basements leak, causes of foundation settlement, why sewers back up, and much more. Perma-Seal can provide you with permanent solutions for all of these issues and we stand behind our work with integrity. Call or click today to schedule your free professional evaluation by one of our certified consultants.

Basement Waterproofing

basement waterproofing
Water seepage & leaking wall cracks services for Northwest Indiana & Chicagoland.

Crawl Space Solutions

Perma-Seal Crawl Space Solutions
Crawl Space Encapsulation Systems rid dampness, insulate, improve air quality & create a gas/insect barrier.

Foundation Repair

structural foundation repair
Settling foundations, bowed walls and slanted floors. We can solve your problem.

Sump Pump Solutions

Sump Pump Solutions
Primary Sump Pump installation, best Battery Backup Pump Systems on the market.

Sewer Services

Perma-Seal plumbing services
Sewer Line Repair & Replacement, Municipal Sewer Backup Solutions, Sewer Camera Inspection & Rodding.

Plumbing Services

Perma-Seal plumbing and sewer services
Water Heater Replacement, Ejector Pumps, Basement Plumbing Rough-ins, & Utility Sinks.

Basement Windows

Basement Windows
New Basement Vinyl Windows, Window Wells, Covers & Drains, Escape Windows, Glass Block Windows.

Yard & Drainage Solutions

Yard Drainage Solutions
Standing water after rain, Underground Downspout & Sump Pump Discharge Extensions.

Basement Pre-Finishing

ThermalDry Underlayment
Waterproof, mold resistant Wall Finishing Systems, Basement Windows, Air Quality Solutions.