• Bowed Wall Repair Solutions
  • New Financing Options Available!
  • Perma-Seal Named Chicago Tribune 2020 Top Workplace

Basement Waterproofing and Foundation Repair Chicago & NW Indiana

Perma-Seal has been the most trusted basement waterproofing contractor and foundation repair specialist serving Chicago and Northwest Indiana since 1979.

We have a variety of services available for homeowners to control, repair, and even prevent problems with your foundation, basement, crawl space, sagging concrete and sewer related concerns.

Basement Waterproofing Services

Basement Waterproofing

Water seepage, leaking wall cracks, and flooded basement repair and prevention services.

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Foundation Repair Services

Foundation Repair

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

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Crawl Space Services

Crawl Space Solutions

Control humidity, improve indoor air quality, and create a gas/insect barrier.

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Sump Pump Solutions

Sump Pump Solutions

Primary sump pump installation, best battery backup sump pump systems on the market.

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Air Quality Services

Air Quality

Improve the quality of your air with a dehumidifier and air filter.

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Concrete Lifting Services

Concrete Lifting & Leveling

We can raise, lift, and level any concrete slab on your property to make it safer and more attractive.

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Yard and Drainage Solutions

Yard & Drainage Solutions

Standing water after rain, underground downspout & sump pump discharge extensions.

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Basement Pre-Finishing Services

Basement Pre-Finishing

Waterproof, mold resistant wall finishing systems and total air quality improvement solutions.

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Plumbing Services

Plumbing Services

Water heater replacement, ejector pumps, basement plumbing, & utility sinks.

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Sewer Services


Sewer backup prevention, line replacement, and inspection services.

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Basement Window Services

Basement Windows

Basement windows including window wells, egress windows, window covers, and drains.

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Preventive Maintenance Services

Preventive Maintenance Service

We offer a service that will help keep your basement or crawl space dry all year round.

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New Construction Waterproofing Services

Construction Waterproofing

Effective, dependable solutions to help prevent basement and crawl space seepage in your home.

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Financing Options Available


Financing options through our SmartBuy program to help you get the services and peace of mind you need.

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Basement Defender

Basement Defender

The only device that will test sump pumps every day and alert you to any mechanical problems before an emergency situation.

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Celebrating Over 40 Years of Making the World a Better Place

Since we began helping homeowners in the Chicagoland area, we have worked on over 450,000 homes to ensure they are protected from basement and crawl space flooding and unstable foundations. Using products and methods that we have tested and know work for the problems you face in your home, we will provide you with the best available repairs and preventive services in the industry. Perma-Seal guarantees that any product or scope of work that carries a warranty will be serviced free of charge for the entire warranty time frame.

Our Purpose is:

To Make the World a Better Place!

Our Mission is:

To build a sustainable organization.

Our Value Statement:

We accomplish our mission with passion, honesty and integrity.

We Live Our Values:

  • We work hard…Seriously!
  • We act with urgency.
  • We do what we say we will do.
  • We strive to be better.
  • We are compassionate.
  • We inspire creativity, optimism, and fun!
Roy Spencer, Owner and President of Perma-Seal

Why Choose Perma-Seal?

We are an industry leader that provides exceptional products installed by expertly trained professionals. Because many of our teammates are from the area and have been working here their entire lives, we know what type of problems to expect and how to appropriately assess and provide the best type of repair for each situation we come across. We treat every job as if we were performing the work on our own home.

Our informative video featuring Perma-Seal Basement Systems 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.

Customer Reviews and Testimonials

Outstanding tech installed the system explaining the process every step of the way. Very professional, skilled and well trained employee. Made sure I understood the operation of the system before he left the property.
Charles McColgin - Sugar Grove, IL 60554
My patience paid off. The first technician Perma-Seal sent out for service didn't seem to have a clue of what he was doing. Nothing got done, in part because I felt it best to have another technician do the work. Trusting in the reputation Perma-Seal has established for themselves, I waited it out for another technician at a later date. I was so right!!! I haven't had a drop of leakage in ...
James Mikolaitis - Chicago, IL 60707
BBB Trophy 2021 Angie Super Service Award

Perma-Seal is The Recognized Industry Leader!

  • 2021 Angi Super Service Award Winner
  • 2018, 2020, 2021 Chicago Tribune Top Workplaces
  • 2016 & 2003 Better Business Bureau Torch Award For Marketplace Ethics
  • A+ Rating With The Better Business Bureau
  • 2021 Top Workplaces USA
  • 2011 Philanthropic Community Award From Downers Grove Chamber Of Commerce
  • 98.4% Customer Satisfaction (Based On Customer Surveys)
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