Foundations
Concrete Foundations
Structural concrete foundations built to engineering specifications — reinforced, precisely graded, and designed for Durham's soil conditions and your project's load requirements.
Typical Range
$6 – $15 / sq ft
Service Area
Durham & the Triangle, NC
Experience
3 Generations
Why Choose Us
Why Foundations by L.D. Williams
Structural Stability You Can Trust
A properly engineered concrete foundation distributes loads evenly across the soil, preventing settling, shifting, and structural failure for the life of the building.
Reinforced for Maximum Strength
Every foundation we pour includes proper rebar reinforcement sized and spaced to engineering specifications — not guesswork. Steel and concrete working together carry far more load than concrete alone.
Precision Grading & Leveling
Grade errors compound into major structural issues over time. Our crews laser-level every pour to ensure a perfectly flat, properly drained foundation from day one.
Moisture & Drainage Management
We integrate proper drainage solutions and vapor barriers into every foundation to prevent moisture intrusion, efflorescence, and long-term soil erosion beneath the slab.
Built for Durham's Soil Conditions
The Triangle's red clay soil requires experience to work with. We assess soil compaction and bearing capacity before designing your foundation to match actual site conditions.
Adds Long-Term Property Value
A quality foundation is one of the few investments that pays back indefinitely. Homes and structures built on properly engineered foundations hold their value and avoid costly remediation.
FOUNDATION TYPES WE BUILD
From simple shed pads to full residential slab foundations, we have the equipment and expertise to handle any foundation scope.
- Slab-on-grade foundations for homes and additions
- Monolithic slabs — thickened edge poured in one pour
- Crawl space foundations with stem walls and footings
- Garage and workshop slab foundations
- Pier and beam footings
- Basement foundation walls
- Retaining wall footings
- Shed and detached structure pads
- Outdoor kitchen and hardscape footings
- Commercial building foundations
THE FOUNDATION PROCESS
A quality foundation begins long before any concrete is poured. Site preparation, engineering, and staging are what separate a lasting foundation from one that fails.
- Site assessment and soil evaluation
- Grading and excavation to proper depth
- Compacted gravel base for drainage and stability
- Vapor barrier installation where required
- Rebar layout to engineering or code specifications
- Form setting with laser-verified level
- Concrete pour with proper mix design for load requirements
- Finishing and curing for maximum strength gain
REINFORCEMENT & ENGINEERING
Structural foundations require the right reinforcement strategy based on load, soil type, and use. We size rebar and spacing to match the actual demands of your project.
- #4 and #5 rebar for residential slabs
- Rebar chairs to maintain proper cover depth
- Wire mesh for non-structural and light-duty pads
- Post-tension cable systems for challenging soil sites
- Thickened edges and turn-downs for load-bearing walls
- Anchor bolt placement for structural framing connections
SITE CONDITIONS & DRAINAGE
Durham's clay-heavy soils and seasonal rainfall make drainage planning a critical part of every foundation design. Poor drainage is the number-one cause of premature foundation failure.
- French drain and perimeter drainage integration
- Proper slope grading to direct water away
- Crushed stone base for moisture dissipation
- Vapor barrier systems for enclosed crawl spaces
- Downspout and gutter connection planning
- Sump pit preparation where soil saturation is a risk
Serving Durham, Chapel Hill, Raleigh & beyond
Ready to start your foundations project?
Common Questions
Foundations FAQs
Ready to Get Started?
Schedule Your Free Estimate
Serving Durham, Raleigh, Chapel Hill & the Triangle since 1964.