Garage floor concrete in Fontana CA - a slab built for the way you use your garage

A 4-inch concrete slab, installed, usually runs about $10 to $14 per square foot in the Inland Empire, and that's the going rate for the area, not a quote. Tearing out an old floor, extra base work, a moisture barrier or thickened edges at the door can push a job toward the top of that or past it, so the written estimate after my visit is where you'll see your own number.

One cost guide says a new slab should be walkable within about 48 hours, suggests waiting a week before heavier loads and puts full curing at about a month. So plan on keeping the car and anything heavy off the floor for that first week, and park in the driveway or on the street until then.

A new garage floor isn't ready for a coating just because it looks dry. A young or dirty slab can still hold moisture, curing compound, oil or tire plasticizers, the chemicals that rub off tires, and any of them can weaken how a coating bonds. If you plan to coat it, I'll tell you when the floor is truly ready, and if you'd rather have color or a finished look, ask about our decorative concrete work.

You shouldn't have to, and the City of Fontana warns that if your contractor asks you to get the permit, you take on liability for the project, including taxes and personal injury. When a job needs a permit, we pull it under our license and work with the city ourselves. If you want to ask about your own garage, the city's Building & Safety office is the place that takes permit applications.

Make sure they're licensed for concrete, which the state contractors board defines as forming, pouring, placing and finishing flat and other concrete work. Watch the down payment too, because on a California home improvement job a contractor can't ask for or take more than $1,000 or 10 percent of the contract price, whichever is less, and later payments have to be listed in the contract and tied to work done or materials delivered to your home.

Most cracks in a newer garage floor come from a base that wasn't packed, joints cut late or skipped, too much water in the mix or concrete that dried too fast in the heat. Shrinkage rises right along with the water in the mix, so it's fair to ask any crew how they control it. National hot-weather guidance calls for pouring when the day or night is cooler and keeping the concrete from drying out while it cures, since hot, dry, windy days, mostly in summer, are hard on fresh concrete.