Garage floor concrete in Walnut Creek CA - a slab that holds up under your car
Cracked, sinking or chipping garage floor? We'll tell you straight whether it needs a repair or a new slab, then do it right.
- Fully licensed and insured.
- Free in-person estimates.
- We reply within 1 business day.
Does your garage floor need a repair or a whole new slab?
Garage floor concrete in Walnut Creek is either fixing the slab you have or breaking it out and forming, pouring and finishing a new one, so your garage has a flat, solid floor again.
Most garage floor calls start with a crack that keeps getting longer, a corner that's dropped or a surface turning to dust under the tires. Some of those floors only need a repair and some need to come out, and that call decides most of the price. On a new floor, the cost moves with the size of the garage, whether the old slab has to be broken out and hauled away, and how thick and how reinforced the new one needs to be. The schedule turns on the tear-out, the pour day and how long the floor needs before the car goes back in. When I come out, the written estimate breaks out each part of the job so you can see where the money goes.
How can you tell your garage floor needs work?
Cracks that keep growing
Thin hairline cracks usually come from the concrete shrinking as it dried, and they often need nothing more than watching. A crack that widens, runs across the whole floor or has one side higher than the other usually means something under the slab moved, and the longer it sits, the more water and grit work in and break the edges down.
A corner that dropped
When part of the floor sits lower than the rest, the ground under it has usually shifted or washed out. Waiting lets that drop turn into a trip edge and a gap under the garage door where water and pests get in.
Dust, flaking or chipped spots
A top layer that powders, flakes or chips under the tires usually means the surface was weak from the start, often because it was finished in the heat or with too much water. It keeps spreading once it starts, and the sooner I see it, the better the chance the slab underneath is still worth keeping.
How we handle garage floor concrete
I start by looking at the cracks, because they tell me whether a repair will do or the slab has to come out, and I'll tell you honestly which it is even when the smaller job is the answer. If it's a new floor, we break out the old slab and haul it away, set the forms and pour early in the day, because concrete finished in the midday heat can end up with a weak, dusty top. Once it's finished, we cut control joints, shallow saw cuts that give the slab a straight line to crack along as it shrinks, and we cut them on time, since late joints leave the cracks to pick their own spots. Then comes curing, the wait while the concrete gains strength, and before we pour I'll go over when the joints get cut and how long the car has to stay out.
A garage floor is often only part of the job. Plenty of people redo the floor and then want the driveway or entry outside it to look like more than plain gray concrete, which is where decorative concrete comes in. On a lot cut into a hillside, the ground beside the garage sometimes needs holding back, and concrete retaining walls handle that.
Repair the slab you have
This suits a floor that's still sound, with small cracks or a worn top and no sign of the slab moving. It costs less than new concrete and keeps the garage in use.
Tear out and pour new
This suits a floor that has sunk, broken into pieces or cracked because something underneath moved. It's the bigger job and the garage sits empty while the slab cures, but you start over with a floor built for how you use it.
Get a written estimate for your garage floor
Send the form and we'll get back to you within one business day. I come out, look at your floor and give you a free written estimate, with no obligation to go ahead.
- Based in
- Walnut Creek, CA 94596
- Hours
- Mon–Fri: 7 AM–11 PM, Sat–Sun: 6 AM–10 PM
What happens after you call about your garage floor?
Here's how a garage floor job runs, from your first call to the day the car goes back in.
Call or send us a message
Call (925) 532-0140 or use the form and tell us what's going on with the floor. We set a time for me to come see the garage.
Walk the garage with me
I look at the floor, ask how you use the garage and tell you whether it's a repair or a new slab. You get a written estimate with each part of the job priced out, so the cost isn't a guess.
Line up permit and pour day
If a permit is part of the job, we get it lined up before we schedule. We aim for a weekday pour, because Walnut Creek requires an after-hours permit for construction on Saturdays and city holidays, and that adds a step.
Pour, finish and walk through
My crew and I do the work, then I walk the finished floor with you. Before we leave, you'll know what to keep off it and for how long.
Why Walnut Creek homeowners call us about garage floors
I look at every floor myself
I come out to see every job, and my crew does the work with me on site. The person who told you what your floor needs is standing there when it's poured.
Building in Walnut Creek since 2023
I started this business here in 2023 after teaching myself on small jobs and learning the rest on crews around the East Bay. That's three years of answering for our own work under our own name.
Licensed and insured for your floor
We're fully licensed and insured. California's Contractors State License Board has a concrete contractor class that covers flat concrete work like garage floors, so it's fair to ask anyone who bids your floor about their licence.
We handle the permit application
In Walnut Creek, a permit is issued with the signature of the legal property owner or a California licensed contractor. When your floor needs one, we handle the application so you're not the one sorting it out.
On a garage floor, what decides how it holds up is what you stop seeing after the pour, like where the joints go and when they're cut. Get in touch and I'll come take a look at yours.
Garage floors and the concrete around them in Walnut Creek
Walnut Creek requires building permits for added structures or physical changes to a property. The city's list of work that doesn't need one names patios, driveway replacements and paths, and garage floors aren't on it, so that list doesn't settle your job either way. I'll tell you at the estimate whether yours needs a permit, and if you'd rather ask yourself, the City of Walnut Creek building permit office is the place to check.
Most of the soil in Contra Costa County is rated high for shrink and swell, which means clay that swells when it's wet and shrinks back when it dries, and that keeps working on a garage floor year after year. We plan joints and reinforcement with that in mind, and we see the same soil on jobs in Concord and Pleasant Hill and across the East Bay cities around Walnut Creek where we work.
Questions about garage floor concrete in Walnut Creek
Can my cracked garage floor be repaired instead of replaced?
Often it can, if the cracks are small and the damage is minor, because epoxy crack fillers or a resurfacing product can fix that. Larger cracks that come from a structural problem usually mean the whole slab needs replacing. I'll look at yours and tell you which it is.
How much does a new concrete garage floor cost in the Bay Area?
Pouring a concrete slab or pad in the Bay Area usually costs about $8 to $16 per square foot, before any staining or stamping. If the old slab has to come out first, the cost of breaking it out is added on top of that. Your written estimate shows each of those parts for your garage.
How long does a new garage floor take to cure before I can park on it?
A new slab should be walkable within 48 hours, and you may want to wait a week before putting heavier loads like the car on it. Full cure takes a month, so plan on lighter use of the garage until then.
Will a new garage floor crack like the old one did?
Probably some, because a little cracking and curling is normal to expect on any concrete slab. What you can control is where the cracks form, which is the job of the control joints, so ask anyone bidding your floor when they'll cut them.
What is the best way to compare quotes for a new garage floor?
Make sure every quote is for the same floor, starting with thickness, since Bay Area garage slabs usually sit at the thicker end of the range for home floors. Ask each contractor what thickness their price is based on, and whether it includes breaking out the old slab.
Does a garage floor need rebar in Walnut Creek?
Not always, and it's worth deciding on purpose, because a reinforced slab costs more per square foot than a plain pad. Rebar is steel set inside the slab to hold it together if it cracks, which counts for more on the clay soil around here. I'll tell you at the estimate whether I'd put it in your floor and why.
Related concrete work around your garage
Decorative concrete
Once the garage floor is new, a colored or patterned finish on the driveway or entry outside can make the whole front of the house look put together.
Concrete retaining walls
If your garage or driveway sits below a slope, a retaining wall holds the soil back so it isn't crowding or pushing against the new concrete.
Where we pour garage floors in the East Bay
Walnut Creek Concrete Works is based in Walnut Creek, CA, and we do garage floor work in the cities around it, including Lafayette and Danville. The 12 cities below have their own pages, and they aren't the only places we work.
Send us photos of your garage floor
Call (925) 532-0140 or send the form with photos of the cracks and the floor's size in square feet, so I've got a head start on whether it looks like a repair or a new slab.