Flatwork

When it’s time to install a new basement floor, sidewalk, or driveway for your property, Unerstall Foundations & Flatwork Inc is ready to help.

Based in Franklin County, MO, we proudly serve as a premier concrete contractor in the Greater St. Louis metro area, providing affordable and high-quality flatwork services and concrete work for residential and commercial clients. We also provide foundation installation, foundation repairs, and sump pump installation.

No flatwork project is too big or too small. Schedule a free estimate today!

Call 636-584-1052

Insulated concrete foundation by Unerstall Foundations & Flatwork

Residential & Commercial Flatwork

Let Unerstall Foundations help you lay out an affordable, smooth, and durable concrete slab for your home or commercial property. We provide the following flatwork services:

Basement floors
Garage floors
Sidewalks
Patios
Porches
Steps
Driveways

Does your foundation need repairing? We can help!

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What are the signs you need professional flatwork?

Despite the strength and durability of concrete, it is especially prone to degrading in a harsh winter climate like Missouri’s.

How do you know when it’s time to repair and replace your indoor or outdoor concrete work?

Telltale signs you should look out for

Cracking, chipping, or flaking concrete
Uneven surface/concrete settling
Broken or cracked edges
Dirty concrete & excessive stains

Our concrete estimators are happy to provide a free estimate and help you go over all of your options for concrete work.

Flatwork FAQs

What types of flatwork services do you offer?

We handle everything from garage and basement floors, driveways, sidewalks, patios, porches, to steps for both residential and commercial properties. No job is too big or too small—we bring quality to every slab.

How can I tell when my concrete needs repairs or replacement?

Common warning signs include cracking, chipping, flaking, noticeable settling or uneven surfaces, broken edges, and stubborn stains or discoloration. If you spot any of these, reach out—we offer free estimates and expert advice.

What do your free flatwork estimates include?

We provide a no-cost site assessment, discuss your goals (new pour or repair), review material and finishing options, and present a transparent estimate—so you know what to expect before we begin.

What makes concrete flatwork durable and long-lasting?

Flatwork withstands high load pressure—industrial-grade concrete can support ~6,000 psi. With proper subgrade prep, reinforcement (rebar/mesh), quality mix, and finishing, your slab can last 20–30 years or more.

What’s involved in the flatwork process?

We start by excavating and preparing the base, then install forms and reinforcement. Next we pour and level the concrete, edge and finish the surface, cut control joints to prevent cracks, and seal the slab for protection.

Can flatwork be customized—for example, stamped or colored finishes?

Absolutely. Flatwork can be customized with textures like broom, stamped patterns, or exposed aggregate, and tinted to match your design aesthetic. Ask us for decorative options suited to patios, porch slabs, or walkways.

Do you offer waterproofing or drainage with flatwork?

Yes. We can integrate interior or exterior drain tile systems, damp-proof coatings, and even sump pumps where needed, to protect slabs and foundations from water damage.

How does winter weather affect concrete flatwork in Missouri?

Harsh winters can cause freeze-thaw stress, leading to cracking, spalling, or settling. Proper installation—solid base, reinforced concrete, drain tiles, and sealants—is vital to extend flatwork longevity in Missouri).

Can I rent concrete forms or equipment for DIY projects?

Yes! Through U-Rent Inc. (established 2001), we rent concrete forms, boom trucks, conveyor trucks, and more. Call 636‑584‑1065 for details on rentals and availability.