Concrete Slab & Foundation Work

Your foundation is the most critical part of any building project. It supports the entire weight of the structure above it and transfers that load safely to the ground below. Whether you are building a new home, adding a garage or shop, or constructing a commercial building, the quality of your foundation work directly affects the long-term stability and safety of your project.

A properly designed and installed concrete slab or foundation stays level, resists cracking, and performs well for the life of the building. Poor foundation work leads to serious problems like uneven floors, cracked walls, sticking doors, and structural damage that costs far more to fix than doing it right the first time. That is why choosing experienced contractors who understand foundation engineering and proper construction techniques matters so much.

At STC St George Concrete, we specialize in concrete foundation and slab work for residential and commercial projects throughout the St. George area. We follow engineering specifications, use quality materials, and pay close attention to details like soil preparation, reinforcement placement, and proper curing. Our goal is to give you a foundation that provides solid, stable support for decades to come.

Slab-on-Grade Foundations

Slab-on-grade foundations are the most common type used in St. George for residential construction. The concrete slab sits directly on prepared ground, often with thickened edges that extend below the frost line to support exterior walls. This design works well in areas without basements and provides a solid, level floor for the building. We handle all aspects including site grading, forming, reinforcement installation, concrete placement, and finishing.

Stem Wall Foundations

Stem wall foundations use concrete footings below ground connected to vertical stem walls that support the building. The floor slab is then poured inside the stem walls, creating a crawl space or raised floor area. This type works well on sloped lots or where you need ventilation beneath the floor. We pour the footings first, build and pour the stem walls, then complete the interior slab once the walls are in place.

Garage and Shop Slabs

Garage and shop slabs need to be thicker and stronger than typical residential slabs to handle vehicle weight and heavy equipment. We install extra reinforcement and use higher-strength concrete mixes designed for these demanding applications. Proper slope for drainage and smooth finishing for easy cleaning are important considerations we address during installation. Many customers also add epoxy coatings after the concrete cures for a durable, professional finish.

Common Foundation Applications

• New home construction foundations
• Garage and workshop floor slabs
• Shed and storage building foundations
• Commercial building foundations and slabs
• Addition and room expansion foundations
• Equipment pads and heavy-duty slabs
• Agricultural building foundations
• Foundation repairs and replacements

Site Preparation and Excavation

Foundation work starts with proper site preparation. We excavate to the depth specified in your building plans, removing topsoil and unstable material until we reach firm, undisturbed ground. The excavation must be level and properly graded for drainage. Poor site prep leads to settling problems later, so we take time to do this step correctly even if it means extra excavation or bringing in fill material.

Next, we compact the subgrade and add a gravel base layer that provides stable support and helps with drainage. This base material needs to be spread evenly and thoroughly compacted using proper equipment. Skipping or rushing this step is one of the most common mistakes that leads to foundation problems. We also install any necessary plumbing or electrical conduits before pouring concrete, since going back to add them later damages your new foundation.

Forming, Reinforcement, and Pouring

We build strong forms that hold the concrete in the correct shape while it cures. Form placement must be precise because any errors here show up in the finished foundation. We install steel reinforcement according to engineering specifications, typically using rebar for footings and stem walls, and wire mesh or rebar for slabs. Proper reinforcement placement and support is critical for the concrete to achieve its designed strength.

On pour day, we coordinate concrete delivery to ensure continuous placement without cold joints that can create weak spots. We carefully consolidate the concrete to eliminate air pockets, especially around reinforcement and edges. Surface finishing depends on the application. Foundation walls get a smooth finish, while floor slabs receive the appropriate texture for their intended use. After placement, we protect the concrete and ensure proper curing conditions for maximum strength development.