Foundation Slabs in Wilmington, NC
Reinforced, dead-level slabs for homes, additions, garages, sheds and workshops — the part you never see but everything sits on.
A slab foundation has one job: stay flat and strong for as long as the building stands. We pour slabs for new homes and room additions, garages, sheds, workshops and barns, and heavy-duty pads for RVs, boats and equipment across the Wilmington area.
Coastal Carolina soil is sandy and the water table is high in many neighborhoods, so the work underneath matters most. Every slab gets a graded and compacted base, vapor barrier where it is enclosed, thickened edges, rebar or wire mesh sized for the load, and anchor bolts or plumbing sleeves set exactly where your plans call for them.
What you get
Homes & additions
Monolithic slabs with thickened edges, poured to your plans and ready for inspection.
Garages, sheds & workshops
Smooth trowel finish, vapor barrier and proper slope to the door.
RV, boat & equipment pads
5–6" thick with rebar for heavy, concentrated loads.
Level and on schedule
Forms checked for level and a pour date your builder or shed company can count on.
Not the cheapest bid. The one you won’t have to redo.
A cheap slab costs less on day one and more every year after — cracks, sinking, fading color. Here is what every MJ project includes that a low bid usually skips.
| Typical low bid | The MJ standard | |
|---|---|---|
| Base | Poured on whatever dirt is there | Excavated, graveled and compacted in lifts |
| Thickness | 3–3.5" to save material | 4" patios, 5–6" with rebar for heavy vehicles |
| Reinforcement | None, or fiber only | Wire mesh or rebar + fiber, sized to the load |
| Concrete mix | Cheapest available | 3,500–4,000 PSI, air-entrained for the coast |
| Control joints | Too few, or cut too late | Planned into the layout and cut the same day |
| Sealer | Optional or watered down | UV-stable sealer with anti-slip grit included |
| Supervision | Crew without the owner | Juan on every pour |
| Quote | One number, extras later | Line-item and in writing, no surprises |
How a project runs
Free estimate
We visit, measure, talk design and leave you a written quote.
Design & schedule
Pattern, color and layout finalized; permits handled if needed.
Prep & pour
Excavation, base, forms, reinforcement — then the pour and finish.
Seal & walk-through
Cut joints, cure, seal and a final walk-through with you.
Common questions: Foundation Slabs
How much does a concrete slab cost in Wilmington, NC?
Garage, shed and workshop slabs usually run $10–$16 per square foot depending on thickness, reinforcement, site prep and finish. Slabs for homes and additions are quoted from your plans. Small pads have a minimum job charge.
How thick should a shed or garage slab be?
Sheds and garages for cars are usually 4 inches over a compacted base with thickened edges. Workshops, RV and boat pads get 5–6 inches with rebar for heavier loads.
Do I need a permit for a slab?
Slabs for homes, additions and many garages need a building permit and inspection from the county or town. Small shed pads often do not. We tell you upfront what applies to your address.
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