Latest · Foundation Basics
Serious crack or cosmetic? How to tell before you panic
Not every crack means trouble. Here is how to read the direction, width, and pattern of a crack, and when it is worth an inspection.
Read the guide →
From wet basements and foundation movement to concrete, plumbing and insulation, Perma-Seal finds the cause, fixes it properly and stands behind the work.
Takes 30 seconds. We call you back within 2 business hours.
We never share your information. No obligation, no pressure, no sales pitch.
Foundation problems rarely fix themselves. Caught early, they cost far less to repair. Here is what to watch for.
Stair-step, horizontal, or widening cracks are the most common first sign of movement.
When frames shift out of square, doors jam and windows stop closing cleanly.
A floor that dips or slopes points to settlement under the foundation.
Standing water, damp walls, or a musty smell mean water is finding a way in.
Walls that lean or bulge inward are under soil pressure and need attention.
Moisture below the house drives mold, wood rot, and poor air quality upstairs.
From a single crack to a full waterproofing system, we diagnose the root cause and fix it once, with a written warranty.
We seal and stabilise cracks at the source, so they do not come back.
Learn more →Interior drainage, sump systems, and wall sealing to keep the basement dry for good.
Learn more →Steel piers and settlement repair that lift and hold the home where it belongs.
Learn more →Carbon fibre and wall anchors that counter soil pressure and straighten walls.
Learn more →Encapsulation and humidity control that protect the home from the ground up.
Learn more →Driveways, patios, and floors raised back to level without a full replacement.
Learn more →Founded in 1979 and still family run, with more than 500,000 homes behind us. We are here for the warranty, not just the sale.
The people who inspect your home are the people who fix it. That is how quality and accountability stay in one pair of hands.
Every repair is guaranteed in writing, and our Basement Defender monitoring watches your system so problems get caught early.
Roy founded Perma-Seal in the Chicago suburbs in 1979 on one idea: permanent repairs at a fair price, and standing behind the work without equivocation. More than 45 years and 500,000 homes later, it is still family owned and run on the same promise.
Every job is documented before and after. These are the kinds of transformations we deliver across Chicagoland.
Chicagoland · sealed at the source
Chicagoland · lifted and stabilised
Chicagoland · sealed and dry
"Honest and fair. They fixed the crack two other companies had misdiagnosed, and explained every step."
"Two companies wanted to rebuild the whole wall. Perma-Seal stabilised it with carbon fibre in a day, half the price."
"No pressure at the inspection. They found the root cause, gave a fixed price, and the basement has been dry ever since."
"They showed up on time, respected the house, and the sump system has handled every storm since."
"Same crew from start to finish, all in writing. After 40 years in business, you can tell they know foundations."
"Straight answers and no upsell. The written warranty gave us real peace of mind. Worth every penny."
These are earned marks. Their real Google standing is 4.9 stars across 13,144 reviews.
If a product or scope of work carries a warranty, we service it free of charge for the entire warranty period. That is the difference between a fix and a promise you can hold us to.
Confirmed foundation problems only get worse and more expensive with time. Flexible financing lets you fix the root cause now and pay over time.
See Financing OptionsWe diagnose the root cause on site and explain it in plain language.
A fixed price up front, no hourly billing and no pressure to decide.
Our own trained crews complete the work cleanly and on schedule.
You get it in writing, and we stand behind it for the full term.
Chicago winters mean freeze-thaw cycles and heavy clay soil that push and pull on foundations year after year. We know these homes because we have repaired them for over 45 years, from the city to the far suburbs.
Plain-language guides written for homeowners, not contractors.
Not every crack means trouble. Here is how to read the direction, width, and pattern of a crack, and when it is worth an inspection.
Read the guide →Our Home Foundation Inspection Checklist walks you through what to look for, room by room, before you spend a dollar.
Tell us what you are seeing. We will call you within 2 business hours to schedule your free, no-pressure inspection.
We call you back within 2 business hours.
We never share your information. No obligation, no pressure, no sales pitch.