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DeKalb Foundation Repair & Basement Waterproofing

Our team at Perma-Seal offers expert basement waterproofing and foundation repair services for homeowners in DeKalb and the surrounding communities.

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If you’re a homeowner in DeKalb, you understand the toll that northern Illinois weather can take on your property. From spring snowmelt and Kishwaukee River flooding to summer downpours that soak Route 38 and Annie Glidden Road, water intrusion and soil shifting are real concerns.

That’s why Perma-Seal has been the trusted choice for homeowners in DeKalb, Sycamore, Cortland, and surrounding areas since 1979. Whether you live near Northern Illinois University, in the Tilton Park neighborhood, or along South 4th Street, we understand the local terrain, home styles, and common foundation and drainage challenges in DeKalb County.

Our Services in DeKalb

Basement Waterproofing

Whether you use your basement for storage or as a finished living space, a dry basement is essential. We handle common water issues like:

  • Wall CracksSealing cracks in poured or block walls to prevent seepage.

  • Cove Joint Leaks – Installing perimeter drainage systems at the base of foundation walls.

  • Window Well Problems – Ensuring proper sealing and drainage to prevent leaks.

Foundation Repair

Expanding and contracting soil in DeKalb, especially clay-heavy soils, can lead to serious foundation settlement problems. We offer long-term solutions for:

  • Stair-Step Cracks – An early warning sign of foundation movement.

  • Bowing WallsBowed foundation walls are caused by hydrostatic pressure from saturated soil.

  • Uneven Floors – Indicating differential settlement or structural imbalance.

Crawl Space Solutions

If your home has a vented or unfinished crawl space—common in older DeKalb homes—you may be dealing with musty odors, drafts, or even pests. Our encapsulation system includes:

  • Vapor Barriers – Heavy-duty liners to block ground moisture.

  • Dehumidifiers – Reduce humidity levels to prevent mold growth.

  • Vent Sealing – Keeps unconditioned air and outdoor contaminants out.

Concrete Repair & Protection

Avoid the cost and hassle of full concrete replacement. Our concrete services restore and preserve your existing concrete:

  • Concrete Lifting – Level uneven sidewalks, porches, and driveways.

  • Concrete Sealing – Protects from water intrusion, freeze-thaw cycles, and salt damage.

  • Commercial Concrete Leveling – For large-scale needs like retail lots and municipal sidewalks.

Additional Services

In addition to our waterproofing & foundation repair services, we also offer a variety of services designed to help you keep your home comfortable and dry year-round:

  • Egress Window Installation – Add emergency escape routes and daylight to basement spaces with an egress window.
  • Attic & Basement Insulation – Improve energy efficiency and comfort throughout your home.
  • Basement Plumbing – Water heaters, sump pump systems, laundry tubs, and more.
  • Sewer Line Services – Video inspections, sewer repair, and backup prevention systems.

Why Choose Perma-Seal in DeKalb?

When it comes to keeping your home safe and dry, you have plenty of options. But not all companies provide the same level of experience, quality, and personal service. So why should you choose Perma-Seal?

First off, we’re a family-owned business with over 46 years of experience serving homeowners in the Chicagoland area. Our track record speaks for itself, and we pride ourselves on building long-term relationships with our customers.

We specialize in everything from basement waterproofing and foundation repair to concrete lifting and leveling. No matter what issues you’re facing, we have a solution tailored to your needs.

Plus, we offer an industry-leading warranty to give you peace of mind. Our skilled technicians have thousands of hours of training, ensuring top-notch service and high-quality work every time.

Check out our reviews online to see what our customers have to say. We’re known for our friendly, knowledgeable service, and we’re committed to getting the job done right.

If you need expert help with your home, give us a call today for a free consultation. We’ll take care of your home like it’s our own!

Contact Our Team To Schedule Your Free Estimate and Appointment

Since 1979, Perma-Seal has helped homeowners across DeKalb stay safe, dry, and structurally sound. If you would like to talk to someone about the solutions above, feel free to fill out the form on our contact us page or call our team at 800-421-7325 to schedule your free estimate. 

Trusted By Thousands of Homeowners

Foundation Repair

Tom is very knowledgeable and informative.

Bill

Sump pump battery replacement and inspection

Gene Krukowski did a great job inspecting my basement and replacing my battery backup batteries. Thank you for sending him!

David Cole

Basement Waterproofing

Being at a low spot in my neighborhood, the heavy rains we get periodically through the year, and the amount of water I was seeing getting pumped out during those… Read more “Basement Waterproofing”

Rudolph C.

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Schedule a Free Consultation & Estimate

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