
Stamped Concrete Patios in New Castle, DE
Want the look of slate, brick, or stone — without the joints, the weeds, and the settling? Tri-County Construction LLC installs stamped concrete patios across New Castle, Wilmington, Newark, and Bear, DE. One continuous pour, integral color, and a stamped texture that holds up to Delaware freeze-thaw and pool deck traffic.
- Slate, ashlar, herringbone, and cobblestone patterns
- Wood-plank and large-format stone looks
- Integral color with antiquing release for depth
- Sealed for stain and freeze-thaw resistance
- Tied into existing patio doors & step-down landings
- Custom borders, banding, and accent inlays

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
A pattern that fits your house
We walk pattern and color samples in your actual backyard light before pouring. Slate next to a brick colonial reads different than slate next to a vinyl-sided ranch — we pick the combo that flatters the house.
Stamped by hand, every panel
No skin-deep texture rolls. Each stamp gets seated by a crew member with a tamper so the grout lines are crisp and the texture is consistent across the whole patio.
Sealed for Delaware weather
We finish with a breathable sealer that resists freeze-thaw, repels stains from grill drips and pool splashes, and re-coats easily down the road.
One slab, no settling
Pavers move. Stones heave. A monolithic stamped slab on a compacted base stays flat — and the grout lines you see are texture, not a place for ants and weeds to set up shop.
Details
What a stamped patio actually looks like — and how we build one
Stamped concrete is real concrete — not an overlay, not a stencil, not a paint job. We pour a structural 4–5 inch slab over a compacted stone base, color the mix with integral pigment so the color goes all the way through, and then while the slab is in the right window of set we press in deep texture mats with the pattern you picked. A second antiquing release powder sits in the low spots and pulls out the depth — that's what makes a stamped slate patio look like real slate instead of a flat concrete pad with lines on it.
Patterns we install most often in New Castle County: random slate, ashlar slate, herringbone brick, running bond cobblestone, seamless texture, and large-format flagstone. We also do wood-plank patterns where the patio reads as a hardwood deck — popular for screened-porch replacements where homeowners are tired of staining boards every other year. For border treatments we'll often run a soldier-course brick or a contrasting ashlar around the perimeter, which frames the field pattern and gives the patio a finished edge.
We start every stamped project the same way: a sample board on site, in your actual sunlight, so you see what the color and pattern look like next to your house and landscaping — not under a showroom fluorescent. Once we have a pick, we lock the order in writing and schedule the pour around weather. Stamped concrete needs a cooperative day to set right — too hot and the pour skins over before we can stamp; too cold and the colors muddy. That's a judgment call our crew makes the morning of, and we'll push the date if conditions aren't there.
After the stamp comes a 24-hour set, a saw-cut joint pattern that follows the stamp lines so the cuts are nearly invisible, and a wash and seal a few days later once the slab has lost its initial moisture. The result is a patio that looks like a high-end natural stone install but doesn't shift, doesn't weed, and doesn't cost what real flagstone costs.
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 long does stamped concrete last in Delaware?
Can I install a stamped patio over my existing concrete?
How is stamped concrete different from pavers?
Will my stamped patio crack?
How slippery is stamped concrete when wet?
How many stamp patterns do you offer?
Book a Free Concrete Estimate Today
We'll walk your site, scope the project, and give you a clear written estimate — no pressure, no upsells.






