Concrete floor installation in Antioch CA - a level slab that wears well
Old floor cracked, uneven or holding water? We dig out, pack the base and pour a slab that sits level and drains where it should.
- Licensed and fully insured.
- Free on-site estimates.
- Replies within 1 business day.
What does a new concrete floor in Antioch involve?
Concrete floor installation in Antioch starts with building a level, well-packed base. Then the slab is poured, finished, jointed and cured, so you end up with a hard surface that stands up to wear and drains the way it was planned.
Maybe you're adding a shop, a shed or a room and need a floor under it, or the old slab has cracked and dropped until nothing sits flat on it anymore. The price moves with the floor's size, how much digging and base work the ground needs, whether the slab needs steel inside, how close we can get the truck and the finish you want. The schedule turns on the weather, anything the city or county needs and the curing time before you can use the floor. If it's a garage, our garage floor concrete page covers that job. Either way, I don't quote concrete off a phone call, so your own number comes from a written estimate after I've measured.
How can you tell a concrete floor needs replacing?
Cracks with a raised edge
A few thin cracks are normal, but when one side of a crack sits higher than the other or the gap keeps widening, the ground under that section has usually moved. Waiting lets water get underneath, and the edge turns into a trip hazard that flooring won't lie flat over.
Water sitting in low spots
Puddles that hang around after you hose the floor down usually mean part of the slab has sunk, or it was never poured to fall toward a drain or a door. The longer water sits there, the more it soaks the base under it and the deeper that dip gets.
Flooring that lifts or bubbles
Tile that pops loose, vinyl that bubbles or glue that lets go over a slab often points to moisture coming up through the concrete. Each new round of flooring will usually fail the same way until the problem underneath is fixed.
How our concrete floor installation works
We dig out to firm ground and pack the subgrade, the soil and base the slab sits on, because a base that's only raked level settles later and takes the floor down with it. Then we check where water will run, set the forms to that grade and add rebar where the floor will carry weight, since those steel bars hold the slab together if it cracks. If you're putting flooring on top, tell us up front, because we lay a vapor barrier, a plastic sheet that keeps ground moisture from coming up through the slab, and protect it through the pour. We pour before the midday heat when we can, since a slab that dries too fast ends up with a weak, dusty top. Then we time the finishing, the cutting of control joints, grooves that give the slab a straight line to crack along, and the curing, the slow wait while it gains strength, to the concrete and not to our day, because bad timing shows up in the surface. If the budget's tight, put the money into the base and keep the finish plain, because nobody sees the base on day one but everybody sees it when it fails.
A new floor often runs into other concrete work. Where the slab sits higher than the yard, we can pour concrete steps to match its height, and if the floor is part of an outdoor space around a pool, our concrete pool decks start with the same base work and get a finish that's made for wet feet.
Smooth troweled floor
A hard, smooth finish suits a shop, a storage room or any slab that's getting tile, vinyl or wood on top. Flooring needs a flat, even surface to sit on, and this is the finish that gives it one.
Broom-finished slab
A broom finish is a light brushed texture dragged across the wet surface so shoes grip, which suits a covered patio floor, a wash area or anywhere that gets wet. It's harder to sweep than a smooth floor, and that's the trade you make for the grip.
Reinforced slab for heavy loads
If the floor will carry a car, heavy shelving or equipment, we put rebar in it so the slab stays together under that weight. For light foot traffic, a plain slab usually does the job.
Get a written price for your concrete floor
Send the form and we'll get back to you within one business day to set a time. We come out, measure the floor and send a written price. The on-site visit is free, with no pressure to book.
Call (925) 503-1201- Based in
- Antioch, CA 94509
- Hours
- Mon–Sun: 6 AM–11 PM
What happens after you call about a concrete floor in Antioch?
Here's how a floor job runs from your first call to the final walk-through, and who you'll be dealing with at each step.
Call or send us a message
Call (925) 503-1201 or use the form and tell us the floor's size and what it's for. We get back to you and set a time to look at it.
I walk and measure the site
I look at the ground, what's around it and how we'll get concrete to it. Then you get a written price, so you know the number before anything gets dug.
We handle permits and pour
Once you say go, we sort out anything the city or county needs. Then we set the forms, pour and finish your floor.
Walk the finished floor together
I walk the job with you before we leave, so you can see the surface and the joints up close. I'll also tell you when the floor is ready for foot traffic and when it can take heavier loads.
Why Antioch homeowners hire us for concrete floors
I estimate it, we pour it
I come out myself to look at the job and give the estimate, and then my crew and I do the work. The person who measured your floor is the one standing there on pour day.
Taught by my dad, here since 2023
I learned concrete on my dad's jobs and started this business in Antioch in 2023, after years of pouring and finishing beside him. He taught me to get the ground and the layout right before the truck shows up, because you can't fix them once the concrete is down.
Licensed and fully insured, every job
California requires a licensed contractor even on work under $1,000 when the job needs any kind of permit or the person doing it hires workers. We're licensed and fully insured, so you don't have to wonder about that before we start.
Have the floor's size, what it'll carry and any flooring plans handy, then call (925) 503-1201 or send us your project.
Concrete floors, steps and pool decks in Antioch
Before we start, we check with the city or county office that handles your address. If a permit is needed, we apply for it as your contractor, or we help you through it if you'd rather file it yourself. In Antioch, the City of Antioch Building Division answers questions by phone or email about what your project needs to submit before you apply, so that's where the permit question for your floor gets settled. If any part of the job reaches the public right-of-way, the public land along the street, such as a curb cut or a change to the driveway, the city's Engineering Division issues its own Encroachment Permit for that work.
Soil is the other thing that changes the job here. Contra Costa County's soils carry a High shrink-swell rating, which means the ground swells when it's wet and shrinks when it dries, and that seasonal movement can flex a slab enough to crack drywall, stick doors and windows and pull brick veneer loose. That's why the base work and joint layout matter so much here, and the same county rating covers our floor jobs in Pittsburg and Oakley, so we prepare the ground the same way there.
Questions about concrete floors in Antioch
Call (925) 503-1201A concrete slab in the Bay Area usually costs about $9 to $18 per square foot. A slab with steel in it costs more per square foot than a plain pad, and that usual price leaves out staining or stamping. For your own floor, I'll come out, measure it and send you a written price.
Probably a little, because even a well-designed, well-built floor almost never comes out completely free of cracks or curling, which is the edges lifting slightly as the slab dries. Good joints keep cracking under control and in the places we chose, so ask any contractor you're considering how they'll lay their joints out.
No, wire mesh won't stop a slab from cracking, but it tends to keep cracks and joints from opening up wider. The joints still decide where the slab cracks.
You can usually walk on a new slab within 48 hours, but to be safe, give it about a week before heavier loads like furniture, appliances or a loaded dolly. Concrete takes about a month, 28 to 30 days, to fully cure, so plan moves and deliveries around that.
Tell your contractor before the pour, so a vapor barrier goes down under the slab and stays whole. One barrier maker reports that even small holes in that film can sharply raise the moisture coming up through the slab, which can lead to flooring failures and delays in putting the flooring down. Another maker's install guide says to clear out large rocks, debris and anything sharp that could puncture the film before it goes down.
Bad timing is usually the cause, because finishing, joint cutting and curing each have to happen when the concrete is ready for them. Get the timing wrong and you can end up with cracks, a surface that wears quickly, high and low spots, and water that doesn't drain the way it should. Before you hire anyone, ask how they schedule each of those steps.
Related concrete work around a new floor
Concrete steps construction
When a new floor sits higher than the yard, poured steps built to an even height get you in and out without an awkward drop at the door.
Concrete pool decks
A pool deck takes wet feet, splashing and sun every day, so it needs a surface with grip and a slope that sends water away from the pool.
Service areas for concrete floors around Antioch
Excel Antioch Concrete Company is based in Antioch, CA, and pours floors in the cities around it, from Concord out to Discovery Bay. These 12 cities have their own pages, and we work in plenty of places in between.
Antioch, CA
Get your concrete floor measured and priced
Getting the site measured now means the base, the grade and anything the city needs are sorted before you need the room.