Foundation Repair & Basement Waterproofing in Southwestern Illinois
Foundation Repair & Basement Waterproofing in Southwestern Illinois
Honest Service. Affordable Solutions. Dependable Results.
Cracked foundations, bowing basement walls, and water seeping through block — these are problems Illinois homeowners know all too well. The clay-heavy soils and freeze-thaw cycles common across the Metro East put serious stress on basements and foundations, and the longer those problems sit, the more expensive they become to fix.
Stratum Structural Systems is a family-owned company with a dedicated Illinois location in Dupo, just minutes from St. Louis across the river. We work with homeowners throughout southwestern Illinois to solve a wide range of structural and water issues — from foundation crack repair to full wall replacement — and we do it without the high-pressure sales tactics that have become common in this industry.
Our Illinois Office
Stratum Structural Systems
331 Transpoint Drive
Dupo, IL 62239
Phone: (618) 590 -5068
Hours: Monday–Friday 7am–6pm | Saturday 9am–12pm
Our Dupo location puts our crews within easy reach of communities across the Metro East and southwestern Illinois — meaning faster scheduling, shorter response times, and a team that knows the soil conditions and building styles common in the area.
Services We Provide Across Illinois
Every home is different, and so is every foundation problem. We offer a complete range of services so you can get the right fix the first time.
Foundation Repair
Settling foundations, bowing or rotating walls, structural cracks, and uneven floors. We use engineered solutions — steel push piers, helical piers, wall anchors, and carbon fiber reinforcement — matched to the actual problem.
Basement Waterproofing
Interior drainage systems, exterior waterproofing, sump pump installation, and solutions for hydrostatic pressure.
Foundation Crack Repair
Targeted repairs for cracks in poured concrete and block foundations, sealed properly so they don't come back.
Egress Windows
Code-compliant egress windows that make basement bedrooms legal, safer, and brighter. Inswing, slider, and vertical styles available.
Concrete Leveling
Sunken driveways, sidewalks, patios, and garage floors raised back to level using polyurethane foam injection — without the mess and downtime of replacement.
Foundation Wall Replacement
When repair isn't enough, we do full wall replacements engineered to outlast the original.
Illinois Counties We Serve
Stratum Structural Systems is a family-owned company proudly serving Southwestern Illinois. From Madison County to Clinton County and the communities in between, we bring the same honest service and dependable results that built our reputation across the St. Louis region.
We are proud to partner with and support the Missouri USO, Knights of Columbus, the American Association of Civil Engineers and the Chesterfield Chamber of Commerce. Choose a local foundation repair and basement waterproofing contractor for reliable, knowledgeable service.
Southwestern Illinois
- Madison County — including Edwardsville, Granite City, Alton, Collinsville, Highland, Wood River, Bethalto, Glen Carbon, Troy, and Maryville
- Clair County — including Belleville, O'Fallon, Fairview Heights, Swansea, Shiloh, Mascoutah, Lebanon, Millstadt, Cahokia Heights, and Dupo
- Monroe County — including Waterloo, Columbia, and Valmeyer
- Randolph County — including Sparta, Chester, Red Bud, and Steeleville
- Washington County — including Nashville, Okawville, and Hoyleton
- Clinton County — including Breese, Carlyle, Trenton, Aviston, and New Baden
Why Metro East Homes Need Specialized Foundation Care
Southwestern Illinois sits on a mix of floodplain alluvium near the Mississippi and clay-rich soils further inland. Both create real challenges for foundations:
- Expansive clay soils swell when wet and shrink when dry, creating constant pressure cycles on foundation walls
- High water tables in low-lying areas of the American Bottom and along the Kaskaskia River put steady hydrostatic pressure on basements
- Freeze-thaw cycles each winter widen small cracks into structural ones if left unrepaired
- Many older Metro East homes were built with cinder block or limestone foundations that need different repair approaches than newer poured-concrete construction
Working with a contractor who understands these local conditions is the difference between a repair that lasts decades and one that fails in a few years.
Why Illinois Homeowners Choose Stratum
- Family-owned, with deep roots in the bi-state region
- All employees must pass a criminal background check before stepping onto your property
- Industry experience and ongoing continuing education by certified manufacturers as well as OSHA and government agencies
- We diagnose what's actually wrong — we don't recommend unnecessary repairs to line our pockets
- 0% financing options available through trusted lending partners (subject to credit approval)
- Proud partners of the Missouri USO, Knights of Columbus, the American Association of Civil Engineers, and the Chesterfield Chamber of Commerce
Schedule Your Free Inspection
If you're seeing cracks in your foundation, water in your basement, doors that won't close right, or floors that have started to slope, don't wait. Small problems become expensive problems quickly.
Call us today at (314) 620-8153 or contact us online to schedule a free home inspection and quote. We'll give you an honest assessment and a clear path forward — no pressure, no scare tactics.
WHAT OUR CUSTOMERS SAY
Writing this as the concrete is still drying on new basement waterproofing/sump pump. Brett came out for the initial bid and extremely knowledgeable and professional. The system was of good quality, and at a competitive price. But what really blew me away was the install crew and what a great job they did! Courteous and professional, finished right on schedule too.
First class all the way, from Brett selling to Todd and Brad doing the install. They cleaned up, they even put down grass seed! Who does that? Apparently, Stratum! Best of all, they didn’t try to gouge me on the price for my egress windows! Highly recommend and would use for ANY project at ANY time!
Stratum put in an egress window for our home. They were very conscientious of how they performed the work and kept us informed about our job’s progress. We would use them again and had a pleasant experience with all who helped.
Had structural issues with a basement wall. Spent a year getting quotes and info on a fix. Stratum were the first company I went to, since I seen they had good reviews, that’s what initially drew me to them. After getting more information from structural engineers, and also other bids, I went back to them to do the work. After a year of collecting data, it was obvious to me, that they were selling me a solution and not just a product like the other contractors I approached. I’ve been really impressed with them from working with their office personnel to the men working in the field. I can say without doubt, they derseve their 5 star rating. If you have work to be done on your house in a structural sense, you should definitely give this company a call.
After receiving 3 bids, I decided to hire Stratum Structural Systems. I hired them for two jobs. a minor crack repair for one property and then a complete drain tile system and extend the downspouts away from the foundation for another property. Their pricing was competitive, and Matt is extremely knowledgeable and professional. The crews who completed the work were on time and finished the work as promised. They were great, and we will definitely be referring them and using them again!
I used this company to install an egress window and they did a wonderful job! I would highly recommend this company! Tyler and crew were AWSOME !!! Thanks!
The guys from Stratum were awesome. Very professional, personable and did a great job. Thanks for the great job.
0% Financing Available *Multiple programs available subject to credit approval
Structural repairs can be expensive and often need to be financed. We partner with some of the best lending institutions who can often source zero or low interest financing options.
