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Certified Consultants, Technicians, and Installers Who are Ready to Help

Free, No Obligation
Inspection & Estimate

Dependable Solutions
at the Best Value

Local Service for
Projects Big and Small

The Oldest Family Owned and Operated Basement Waterproofing and Foundation Repair Company in Chicago & NW Indiana

Perma-Seal is 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.

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.

Over 45 Years of 5 Star Service

Whether your job is big or small, our team at Perma-Seal won’t stop until the job is done right. No upsells, no high pressure sales, just solutions for your home that do the job. That’s what sets us apart.

Our team has over 45 years of experience working with Chicago area and NW Indiana homeowners to keep their homes safe and dry. We are committed to providing each customer with the solutions they need and work that meets our quality standards.

Their Willingness to Put in the Extra Effort on my Foundation Repair Project was Unmatched


I would like to recognize the hard work and dedication of Lisa Kapoun and John Ferguson. Their willingness to put in the extra effort to assist with my foundation repair project was unmatched. Lisa had to complete a ton of paperwork to satisfy the lender needs for this real estate deal. John would return phone calls on Sundays, even respond on Father’s Day…

Danette A. – Roselle, IL

Celebrating Making the World a Better Place

Since we began helping homeowners in the Chicagoland area, we have worked on over 500,000 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 find a way.
  • We act with integrity.
  • We strive to be better.
  • We are compassionate.
  • We inspire creativity, optimism, and fun!
Roy Spencer - President and Founder of Perma-Seal
Roy Spencer - President and Founder of Perma-Seal

Perma-Seal is the Recognized Industry Leader

Chicago Tribune Top Workplaces 2022
Chicago Tribune Top Workplaces USA 2021
Angi Super Service Award 2023 - Perma-Seal Basement Systems
BBB Torch Award for Ethics

Awards & Accreditations

2018, 2020, 2021, 2022 Chicago Tribune Top Workplaces

2021, 2022, & 2023 Angi Super Service Award Winner

2016 & 2003 Better Business Bureau Torch Award For Marketplace Ethics

A+ Rating With The Better business Bureau Since 1985

2021 Top Workplaces USA Winner

2011 Philanthropic Community Award From Downers Grove Chamber of Commerce