Concrete floor installation in Sierra Madre CA - a floor that stays flat and solid
Floor cracked, sinking or chipping? We pour a new one on dug-out, packed ground, with the joint lines planned before the concrete arrives.
What does it take to put in a new concrete floor?
Concrete floor installation in Sierra Madre is flatwork, our word for flat concrete like floors, patios and driveways. We dig out the soft ground, pack a firm base, then form, pour and finish a level slab for your garage, workshop, shed or room, with joint lines placed where cracks are meant to go.
Most people who call me about a floor are looking at bare dirt, broken old concrete or a slab that's sunk and cracked, and they want to know what a new one will take. The price mostly moves with the size in square feet, how much soft ground has to come out before we build the base, whether the slab gets rebar, the steel bars inside that hold it together, and what finish it needs. The schedule turns on the ground work, the weather, any permit the job needs and curing, the days the concrete needs to harden before you use it. I'll give you your own figure when I come out to look, and before any work starts I look into what your floor needs from the city or county. We're based in Sierra Madre and work in Pasadena, Arcadia, Monrovia and many other cities around them, and if your space is a garage, our garage floor concrete page covers that job in more detail.
What our concrete floor installation includes
First I check where water runs around the space, because a floor that falls toward the house or traps water starts its trouble on day one. Then we dig out the topsoil and soft spots and compact the subgrade, the ground the slab sits on, the same way you'd tamp around a fence post so it doesn't lean later. Before the pour I show you on the plan where the control joints go, the straight lines we cut so the slab cracks along them instead of wherever it wants, so you know where cracks are meant to land. We pour in the cooler part of the day, since midday heat can leave a weak, dusty top, then finish the surface smooth for flooring or with a broom finish, a light brushed texture that gives your feet some grip. We cut the joints on time and protect the slab while it cures, and before we leave you get a plan for when you can walk on the floor and when it's ready for heavier use.
A new floor often sits next to other concrete work. If it opens toward a pool, we can pour concrete pool decks on the same kind of packed base, and if there's a drop at the door, our concrete steps construction matches the steps to the floor level so nobody trips on an uneven lip.
Why Sierra Madre homeowners call Cornerstone Sierra Madre Concrete for a concrete floor
I write your estimate myself
I come out to look at the space and write the estimate, then our crew does the work while I'm on site running it. The person who told you how the base would be built is the one standing there when it gets packed.
In business here since 2020
I first mixed concrete for barn floors on our family farm, then spent years on crews around the San Gabriel Valley before starting this business in Sierra Madre in 2020. In those 6 years we've made a habit of explaining each step as we go, so you understand your own floor.
Licensed and insured for concrete work
We're fully licensed and insured. In California, the Contractors State License Board licenses the contractors who form, pour and finish flat concrete like floors, so that's the license to ask about from anyone you hire.
Sierra Madre permits and hours checked
Sierra Madre has no all-in-one permit, so each trade on a project needs its own when one is required. When a permit applies, we handle the application as the licensed contractor and walk you through each step. We also plan the pour inside the city's construction hours, Monday to Saturday 7 a.m. to 7 p.m. and Sundays and holidays 10 a.m. to 6 p.m., so the finishing and joint cutting don't run past the cutoff.
On a floor, the part that matters most is the one you'll never see again, the base. If the budget gets tight, I'd rather you pick a plainer finish than skimp on the ground work, because a nice surface sitting on settling dirt cracks anyway. When you're ready, send us your project or call (626) 828-0332.
Get a free on-site estimate for your concrete floor
We get back to you within one business day, and the estimate comes with no obligation. After you send the form, I'll come out myself to look at the space and write the estimate. It helps to have the floor's rough size in square feet and what you plan to use it for.
Examples of finished concrete floors
Questions before you book concrete floor installation
How much does a concrete floor cost near Sierra Madre?
Concrete slabs in the Los Angeles area usually cost about $7 to $14 per square foot for the slab, and that's the going rate around here, not our quote. A reinforced slab costs more per square foot than a plain, unreinforced pad, and the amount of soft ground that has to come out moves the price too. I'll give you your own number when I come out to look. Satisfaction guaranteed on every job.
How long does a new concrete floor take before I can walk on it?
A new slab should be walkable within 48 hours, and waiting a week before heavier loads is the safe choice. Concrete takes a month to fully cure, which is why those dates go on the plan we hand you. Trade guidance suggests a sprayed curing compound or damp burlap early on, with the surface kept moist for at least 3 days.
What causes cracks in a new concrete floor, and will mine crack?
Some cracking in concrete can't be prevented entirely, but properly designed joints control it and keep it to a minimum. The cracks that cause real trouble usually come from a base that was raked level instead of dug out and packed, or from joints cut late or skipped. That's why the base and the joint lines get so much of our attention.
Who can apply for a Building & Safety permit in Sierra Madre?
Sierra Madre issues Building & Safety permits only to a State of California licensed contractor or the property owner. The city requires permits for all projects that alter a structure, and its list names work like wall coverings, partition walls and fences but not concrete floors, so ask the city's Planning & Community Preservation Department at (626) 355-7138 or Permits@sierramadreca.gov whether your floor needs one. If it does, we'll take care of the application.
Where should the vapor barrier go under a concrete floor if I'm adding tile or a coating?
One concrete floor guide says floor coverings and coatings get the most protection when the vapor barrier, the sheet that slows ground moisture coming up through the slab, sits in direct contact with the slab. If you're planning a covering or coating, ask your installer where the barrier will sit, and tell me at the estimate so we can talk it through.
How do I choose a contractor for a concrete floor in Sierra Madre?
Ask each one four things: how they'll prepare the ground, where the joints will go, where the vapor barrier will sit and who applies for the permit. Their answers tell you whether they're thinking about the parts you can't see after the pour. Ask us the same questions, because we'd rather you hire knowing exactly what you're getting.
Concrete work that often goes with a new floor
- Concrete pool decks
If the new floor opens toward a pool, a deck poured on the same packed base gives you a firm walking surface that sheds water away from the house.
- Concrete steps construction
When the new floor sits higher or lower than the yard or the door, poured steps built to match its level give everyone a safe, even way in and out.