Garage floor concrete in Antioch CA - a solid floor you can park and work on
Cracked or sinking garage floor? We'll tell you if it can be resurfaced or needs a new slab, then do whichever one your floor needs.
- Licensed and fully insured.
- Free on-site estimates.
- Replies within 1 business day.
Should you resurface your garage floor or pour a new one?
Garage floor concrete in Antioch is either a new slab poured for your garage or a resurfacing layer over the old one. Which one fits depends on whether your current floor is sound or still moving, and that one call decides most of the price and how long you're without the garage.
You park on it, store things on it and maybe work on it, and lately it doesn't look or feel right. What moves the price is the size of the garage, whether the old slab has to come out, how much work the ground under it needs and how easy it is to get the concrete truck to your door. The schedule turns on the same things, plus any permit check and the curing time, the wait while new concrete hardens before you can drive on it. California's licensing board counts forming, pouring and finishing flat concrete as concrete contractor work, so a garage slab is a job for a licensed concrete crew. I measure all of it on site and send you a written price, so you know the real number before anything starts.
How do you know your garage floor needs work?
Cracks that keep widening
A hairline crack that stays put is usually just shrinkage, and it's normal. A crack that gets wider, or one side of it rising above the other, means the slab is still moving, and waiting lets it grow until resurfacing is no longer an option.
A corner sinking or tilting
A dropped corner, or water pooling toward the back wall instead of running out the door, usually means the ground under the slab settled. The longer it goes, the further it drops and the more water and dirt collect where you don't want them.
Chipping, pitting or dusting
A top that flakes or turns to powder under a broom usually started with a weak surface at the pour. If the slab under it is sound, this is often the best case for resurfacing, as long as you catch it before the wear gets deep.
How we handle garage floor concrete
The first thing I look at is whether your old slab is sound or still moving, because an overlay laid over a moving crack just cracks again. If it's sound, we clean and prep the surface and put the new layer down. If it needs to come out, I say so and the removal goes in the estimate, then we break out the old floor, dig down to the subgrade, which is the ground the slab sits on, and pack it hard so the new floor doesn't settle with loose dirt. We set the forms, lay rebar where the job calls for it, which is steel that holds the slab together if it cracks, and check that the floor falls toward the door and not toward the back wall. Then we pour, finish the surface and cut control joints, shallow grooves that give the concrete a planned place to crack. If the budget gets tight, I'd rather go with a plainer finish than skimp on the base, because nobody sees the base on day one and it's the part that decides whether your floor stays flat.
A garage floor often sits next to other work. If you want more than plain gray on the driveway apron or a finished workshop floor, decorative concrete can add color or a pattern. On a lot that slopes, the garage pad sometimes needs a concrete retaining wall beside it to keep the hillside where it is, and it makes sense to plan both at once.
Resurfacing a sound slab
This suits a floor that's worn, stained or pitted but still flat and not moving. You keep the old slab, so there's less mess and less time without the garage than a full tear-out.
Tear-out and new slab
This is for floors that are sinking, tilting or have cracks that keep opening. It's more work up front, but it's the only fix that deals with the ground under the floor.
New slab for a new garage
This is for a garage being built or extended, where there's no old floor to deal with. Starting from bare ground is the best chance to get the base and the slope right the first time.
Get a written price for your garage floor
Send the form and we'll reply within one business day to set up a free on-site estimate. There's no pressure to book, and after I walk and measure the garage, you get a written price.
Call (925) 503-1201- Based in
- Antioch, CA 94509
- Hours
- Mon–Sun: 6 AM–11 PM
What happens when you call about a garage floor in Antioch?
Here's how a garage floor job goes with us, from your first call to the walk-through at the end.
Call or send us a message
Call (925) 503-1201 or use the form, and have your garage size, photos of any cracks and notes on settling or a planned coating handy. We get back to you and set a time to come out.
I measure and price it
I check whether the slab is moving, look at what's around the garage and how we'll get concrete to it. You get a written estimate that says whether we'd resurface or repour, with any removal priced in, so it doesn't surprise you later.
We check permits and pour
Once you say go, we sort out anything the city or county needs, and if there's a permit, the city reviews the plans and inspects the work. Then we set forms, pour and finish.
We walk the floor together
I walk the finished job with you before we leave. I'll tell you when it's safe to walk on and when you can bring the car back in.
Why Antioch homeowners call Excel Antioch Concrete Company for garage floors
The same person quotes and pours
I come out myself to look at the job and give the estimate, and my crew and I do the work. What I see in your garage on the visit is what we plan for on pour day, with no handoff in between.
Learned on my dad's crews
I started this business in Antioch in 2023 after years of pouring and finishing next to my dad. He taught me the ground and the layout come first, because you can't fix them once the concrete is down.
Licensed and fully insured in California
We're licensed and fully insured. That matters when a loaded concrete truck and a crew are working at your house.
Based in Antioch, working nearby
We're based in Antioch and work in the cities around it, from Concord and Walnut Creek out to Rio Vista and Discovery Bay. Being close means I can come look at your garage, because I don't quote concrete off a phone call.
On a garage floor, the call on the old slab comes before everything else. Ask for an estimate and I'll tell you straight whether yours can stay.
Garage floors and the work around them in Antioch
Before we start a garage floor in Antioch, we check with the city's Building Division, which issues building permits. Its list of work exempt from permits includes concrete flatwork, but a garage floor is sometimes part of a bigger project, so we don't assume and we confirm it for your address. If you'd like to ask the city yourself, it asks people with project questions to call (925) 779-7065 or email before applying. If a permit is needed, we apply for it as your contractor, or help you through it if you'd rather file it yourself.
A lot of what we see here is garages that have done years of duty, with a car, a freezer and a workbench all on one slab, and summer afternoons hot enough that we pour early so the top doesn't dry out weak and dusty. We see the same worn garage floors on jobs in Pittsburg and Oakley, and we start them the same way, by finding out whether the slab is still moving.
Questions about garage floor concrete in Antioch
Call (925) 503-1201A new concrete slab in the Bay Area usually runs about $8 to $16 per square foot, reinforced or unreinforced. If your old floor has to come out first, the cost of breaking it out and hauling it away is added on top. I measure your garage and send a written price, so you're not working from a guess.
Yes, if the slab is intact, reasonably level and not settling, and on that kind of floor an overlay can give about 10 to 15 years of renewed surface. If the cracks are still growing or changing width, they usually come right through an overlay within one season, so a floor that's moving is a poor fit.
Not always, since concrete flatwork is on the city's list of work exempt from permits, but we don't assume your job fits it. We confirm it with the city for your address before we start, and if a permit is needed, we take care of it as described above.
Plan on about a week before heavier loads like your car, though you can usually walk on a new slab within 48 hours. The concrete keeps curing for 28 to 30 days to reach full strength, so plan on the garage being out of heavy use for that first week.
Some cracking is normal, because concrete shrinks as it dries and a completely crack-free garage floor isn't realistic even with the best design and proper construction. The control joints we cut give those cracks a planned line to follow, so what you usually see is a crack in a joint, not one wandering across the floor. Joint timing depends on the temperature and the mix, so we watch both on pour day.
Tell us about the coating before we pour, because water vapor moving up through a slab can make moisture-sensitive coatings and adhesives fail and peel off. We'll talk through the slab with you, and the coating maker's instructions decide when and how it goes on.
Related concrete work around your garage
Decorative concrete
Color, a stamped pattern or a textured surface can give your driveway apron or patio a look that fits the house instead of plain gray.
Concrete retaining walls
When your garage sits on a slope or the yard drops off beside the driveway, a concrete retaining wall holds the ground back so it stays put.
Service areas for garage floor work
Excel Antioch Concrete Company is based in Antioch, California, and we pour and resurface garage floors in the cities around it, including Brentwood and Martinez. Below are the 12 cities with their own page, and we work in plenty of places in between.
Antioch, CA
Find out if your floor can stay
One visit settles whether your old floor can be resurfaced or has to come out, and that's the biggest thing moving your price.