Slabs & Pads · New Castle County, DE
Concrete Slabs & Pads in New Castle, DE
From a 6×6 generator pad to a commercial loading dock, Tri-County Construction LLC pours concrete slabs and pads across New Castle County, DE. Sheds, detached garages, AC units, hot tubs, dumpster enclosures, equipment foundations — we build the slab to match the load it'll carry and the drainage your site needs.
- Shed, garage, & workshop foundations
- AC, heat pump, & generator equipment pads
- Hot tub & pool equipment pads (engineered for load)
- Dumpster, trash, & utility enclosures
- Commercial loading & equipment slabs
- Sub-grade prep, rebar, and vapor barrier where required
4.7· 18 Google reviews
Licensed & Insured
DE concrete contractor
18+ Years
Family-owned · father & son
4.7 / 5
18 Google reviews
Local Crew
Based in New Castle, DE
Why homeowners pick Tri-County
Built for Delaware weather, finished to last
Sized for the load
A 4-inch pad is fine under a shed; a 6-inch reinforced pad goes under a generator. We thicken the slab and step up the rebar based on what is actually sitting on it.
Compacted base, every time
Slabs fail because the base settles. We dig down, lay clean stone in lifts, and compact it before a single yard of mud touches the forms.
Set up for what comes next
Conduit sleeves for generators, anchor bolts for sheds, expansion joints where a slab meets a structure — we plan the slab around the install that follows it.
Residential & commercial
We pour weekend backyard pads and we pour 40-yard commercial slabs. Same crew, same standards, scaled to the project.
Details
The right slab for what's going on top of it
Not every pad needs the same slab. A shed foundation in a Bear, DE backyard can sit on a well-compacted 4-inch slab with wire mesh, with anchor bolts set in the wet pour for the manufacturer's base plate. A detached garage slab in New Castle needs a thickened perimeter and a sloped finish for drainage. A generator pad wants 6 inches of mix over a stone base with conduit sleeves cast in place so the electrician isn't core-drilling into your new concrete two weeks later.
We start every slab job by figuring out the answers to three questions: How much weight is going on it? How does water need to drain off it? What attaches to it later? Those answers drive the spec — thickness, reinforcement, joint layout, embedded hardware, and finish. We'd rather take ten minutes on that conversation than pour a thin pad that cracks under a hot tub three months later.
For commercial work in Wilmington and Middletown — equipment slabs, trash enclosure pads, generator and transformer pads, exterior loading aprons — we pour to engineered drawings and stake-and-string the elevations before the truck shows up. We've poured slabs for property managers, contractors, and small businesses across the county, and we're comfortable working around tenants, deliveries, and tight site access.
Every Tri-County slab gets tooled edges, sawn or hand-cut control joints on a grid that matches the panel size, and a finish appropriate to the use case: broom for traction, smooth steel-trowel where a generator or AC unit will sit. We cone the cure window, label it, and check back the next day to make sure nothing got walked through.
Our process
From the first estimate to the final cure
- 01
Free On-Site Estimate
We walk the site with you, measure square footage, review drainage and grading, and explain exactly what your project needs — no upsells, no surprises.
- 02
Excavation & Prep
We remove old surfaces, set the base to spec, install rebar or wire mesh, and form the pour to match your finished elevations.
- 03
Pour, Finish & Cure
Our crew pours, finishes, and details every joint by hand. We protect the cure window so your concrete reaches full strength.
FAQ
Common questions
Don't see your question? Call (302) 419-3232 or send a quick note through the contact form — we usually reply same-day.
How thick should my concrete pad be?
For a typical shed or AC unit, 4 inches over a compacted stone base is standard. For a generator, hot tub, or detached garage, we step up to 5–6 inches with rebar reinforcement. Commercial slabs are sized to the engineer's drawings. We will recommend the right thickness on the site visit and put it in writing on the estimate.
Do you handle the permit for my shed or garage slab?
New Castle County permitting varies by structure size and zoning. We can pull the concrete portion of the permit when needed; for the structure itself (shed kit, garage build) the homeowner or their builder typically pulls the permit. We will flag what you need before we mobilize.
Can you tie a new pad into an existing slab?
Yes. We use rebar dowels drilled and epoxied into the existing slab, with an expansion joint and bond breaker so the new pour can move independently. This is the cleanest way to extend a garage floor, expand a patio, or add a pad onto an existing apron.
How fast can you pour my pad?
Small residential pads (shed, AC, generator) we can usually schedule within 2–3 weeks of accepting the estimate, weather permitting. Larger pours we book further out. We give you a target start date in writing and update you if weather pushes it.
Do you set anchor bolts or sleeves in the pour?
Yes. Anchor bolts for shed and garage base plates, conduit sleeves for generators and EV chargers, drainage cores — anything that needs to be embedded gets cast into the wet pour at the right location, so nobody is drilling into your new slab later.
More from Tri-County
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Stamped Concrete Patios & Decorative Concrete
Learn moreBook a Free Concrete Estimate Today
We'll walk your site, scope the project, and give you a clear written estimate — no pressure, no upsells.