buildin’ onto your house? addin’ a new room, porch, or maybe turnin’ that carport into somethin’ livable? before any of that can happen, you need concrete. and not just any concrete — you need the right kinda slab that ties into your home clean and don’t mess up later.
at JK Concrete Contractor, we do concrete work for home additions all over jacksonville. we pour it flat, thick, and ready to build on. whether it’s a tiny sunroom or a full second wing, we make sure your slab don’t crack, lean, or cause trouble down the road.
📐 Custom-poured slab to fit your addition
🧱 Rebar or wire mesh for reinforcement
🪵 Tie-ins to existing slab or block wall
🛠️ Clean transitions so your floor don’t feel off
💧 Vapor barrier to keep moisture out
🏠 Ready for framers, builders, or DIY heroes
this ain’t just a patch of concrete — it’s the start of your new space.
we did a job in southside where a family was addin’ a master suite off the back of their ranch. their builder said the old slab was weird and uneven — we formed a new pour that matched it just right. walls went up two days later, zero issues.
another homeowner in westside was addin’ a laundry room where there used to be a screened porch. ground was all soft and unlevel. we dug it out, laid a strong base, and poured a thick slab that passed inspection first shot.
✔️ On-site measurements + slab planning
✔️ Grading and base compaction
✔️ Forms and reinforcement
✔️ Concrete poured to match your house
✔️ Smooth or broom finish
✔️ Site cleanup after we’re done
we don’t just show up, pour, and leave. we work like we live there.
anytime you’re expandin’, we’re the first step.
ain’t nothin’ worse than spendin’ all your money on a room that squeaks, tilts, or floods. it all starts with the concrete. get that part wrong, and the rest of the build gets tricky.
get it right? everything else lines up smooth. tiles lay flat. doors shut clean. no weird low spots under the couch.
and when the city inspector comes by? they’ll nod and move on — no delays, no red tape.
we can’t build the whole room for ya, but we’ll pour the slab that makes it possible. clean, thick, level — and done fast.
call JK Concrete Contractor at (904) 822-1350 or come on by 1616 Jork Rd #402. we’ll take a look at your space and give you a real quote.
start your addition off right — with concrete work that don’t mess around.
“called JK to fix our cracked driveway in arlington. they showed up on time, explained everything in plain talk, and the new concrete looks way better than before. no more tripping over that big ol’ crack. would hire again.”
“they poured a slab for our shed out in westside. super solid job. the guy even helped level out a weird slope we didn’t know was gonna be a problem. these folks actually care how it turns out.”
“foundation was crackin’ bad on our rental house. jk concrete came out fast, gave a fair price, and got it fixed in two days. no nonsense, no mess left behind. just good work.”
“we had ‘em do a stamped patio in the backyard. looks amazing now — totally changed how the space feels. they even matched the color we wanted without makin’ it look fake. 10/10.”
“garage slab was all uneven. jk concrete came out, tore the old one, and poured it fresh. no more wobble when i roll in. solid crew. didn’t waste time.”
We take care of everything from start to finish.
Professional guidance for the best results.
Designs and finishes made just for you.
Quality work delivered on time, every time.