D&M Placentia Concrete Construction
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Garage floor concrete in Placentia CA - a solid floor for your car and your tools

Cracked, sinking or dusty garage slab? We dig out, pack the base and pour a new floor built to stay flat under your car.

A smooth gray concrete floor with control joints fills a large insulated building beneath exposed wooden roof trusses.

A garage floor is flatwork, the flat concrete we form, pour and finish right on the ground, and once it cures it gives you a floor that can take your car, a heavy workbench and everything else that ends up out there. When folks in Placentia call me about garage floor concrete, the old slab usually has cracks that keep spreading, a corner that's sunk, a dusty top or water pooling by the door.

The price mostly comes down to the size of the garage, how much old concrete comes out, whether the slab gets steel in it and the finish you pick, from plain gray to decorative concrete with color. The schedule turns on the weather and the cure. Your estimate puts your own numbers in writing.

What our garage floor concrete work covers

  • I come out myself. I come out to look at your garage and give the estimate, and our own crew does the work with me on site.
  • A packed base under the slab. We dig to the subgrade, the dirt under the slab, and pack it firm. It's hidden once we pour, but I won't skimp on it, since a soft base lets the floor sink.
  • Joints cut while it's fresh. We cut control joints, shallow grooves that give the slab a place to crack, while the concrete is still fresh, so cracks follow our lines instead of wandering across the floor.
  • Licensed in California and insured. We're licensed and insured. We've been working for homeowners since 2021, after the years I spent pouring slabs on new housing tracts.

What goes wrong with garage floors

ProblemWhat it looks likeUsual fix
A sunken sectionWhat it looks like: One area has dropped, and water or oil collects in the low spot.Usual fix: Dig out, pack the base and repour.
Wandering cracksWhat it looks like: Cracks run across the floor instead of along the cut lines.Usual fix: Replace the section with control joints cut on time.
Dusty, flaking topWhat it looks like: Gray dust on everything stored there and a surface that scales off.Usual fix: A new slab poured and cured out of the midday heat.
Water running insideWhat it looks like: Rain runs under the door and pools against the back wall.Usual fix: A new slab sloped to carry water out the door.

Fix part of it or pour new

  • Patch and seal. Suits a floor that's still solid with a few thin cracks and nothing sunk, since the base under it is clearly doing its job.
  • Replace a section. Makes sense when one spot has sunk or broken up, like the strip by the door, and the rest is sound. The new piece won't match the old color exactly.
  • A full new slab. The right call when cracks run all over or the whole floor has settled, because patching over a failing base just buys time. We break it out and start fresh.

How a garage floor job goes

  1. A visit to your garage. You call, and I come out to see the garage, measure it and ask how you use it, from parking to a workbench.
  2. A written estimate. You get a written estimate that spells out what we'll do, and we talk through the finish now, since coatings like epoxy can trap moisture and need redoing later.
  3. Permit and pour time. If the city must sign off, we handle that first. On hot days we may pour at a cooler hour, so we'll plan your garage access around it.
  4. Pour day and walk-through. On the day, our crew protects your yard and sprinklers and cleans up as we go, and I walk the finished floor with you.

Looking after your new garage floor

Most of what keeps a garage floor sound happens after we leave, so I go over it with you at the walk-through. Let the slab finish curing before the heaviest loads go on, keep water running out the door and re-coat any finish once it wears. Satisfaction guaranteed on every job.

We're based in Placentia and work across the city and the cities around it, including Fullerton and Yorba Linda, mostly for homeowners who want a careful crew at a lived-in house. We also build driveways, steps and concrete retaining walls around the same homes, so ask about those when you call for an estimate.

Tell us about your garage

Send your garage size, the finish you'd like and whether you're in an HOA, and we'll get back to you within one business day to set a visit.

(714) 798-2825
  • Free on-site estimate
  • Everything spelled out in writing
  • No pressure to book

Garage floor questions we hear

How much does a new garage slab cost in Orange County?

A concrete slab in Orange County usually costs about $7 to $14 per square foot, before any staining or stamping. Garage slabs sit on the thicker end of the range for home floors, and a slab with rebar, steel bars that help hold it together, costs more per square foot than a plain pad.

How soon can I park on a new garage floor in Placentia?

A new slab should be walkable within 48 hours, and waiting a week before parking or other heavy loads is a safe approach. Curing, the slow hardening that gives concrete its strength, takes a month to finish, so plan where the heaviest things go until then.

Is epoxy a good finish for a garage floor?

It can be, if you're ready to re-coat it every few years. One sealer maker says epoxy looks attractive and resists chemicals, but it traps moisture rising through the slab and can bubble or peel, and it puts the typical life at 3 to 7 years before wear or upkeep.

Will my new garage floor crack like the old one did?

It can still crack, but a firm base and control joints cut on time keep cracks small and in the lines we choose. Floor guidance says synthetic fibers in the mix can help limit shrinkage cracks while the concrete is soft and early in curing, though once it hardens most fibers at typical doses won't hold cracking back.

How do permits and inspections work for a garage floor in Placentia?

Permit applications in Placentia go in person to City Hall, and the Building Division reviews them after planning and zoning clearance. Only people named on the permit can request inspections, and HOA homes need a notarized letter from the association. If your floor needs one, we handle it and set up inspections, and the division answers project questions at 714-993-8124.

Call about your garage floor

Tell us what's going in the garage, from the car to a heavy workbench, and we'll set a time to come look at the floor.

Call(714) 798-2825