Concrete Garage Foundations in Atlanta

A garage slab needs to hold up to vehicle weight, heavy equipment, and decades of use. Done right, a concrete garage foundation is virtually maintenance-free. Done poorly, it cracks, heaves, and becomes a liability. At Sudlow Concrete, we install concrete garage foundations throughout Atlanta built specifically for the demands of vehicle storage and workspace use.

We work with homeowners building new detached garages, adding attached garages to existing homes, and contractors who need a reliable subcontractor for the concrete scope. Whatever your project looks like, we bring the same attention to prep, reinforcement, and finishing that makes a garage slab last.

A garage foundation isn't just any concrete slab. Vehicle weight, fluid exposure, and the need for proper drainage all affect how a garage slab should be designed and poured. Key considerations include:

• Thickness and Reinforcement: Most residential garage slabs are poured at 4-6 inches thick. For heavier use—multiple vehicles, equipment, or trucks—we recommend 6 inches with proper rebar reinforcement throughout. Thickened edge beams are standard along the perimeter.

• Slope and Drainage: A garage slab should have a slight pitch toward the door or a floor drain to allow water and fluids to exit cleanly. Flat or improperly pitched slabs pool water, accelerate deterioration, and create a chronic moisture problem. We build proper pitch into every garage pour.

• Control Joints: Concrete shrinks as it cures, and without control joints, it will crack wherever it wants. We cut control joints at appropriate intervals to direct any cracking along clean, predictable lines—maintaining both the structural integrity and the appearance of the slab.

• Vapor Barrier: A polyethylene vapor barrier beneath the slab is standard practice for garage construction. It prevents ground moisture from migrating up through the concrete, which protects vehicles, stored items, and the slab itself from moisture-related damage.