Concrete Contractor in Doral, FL

What does a concrete contractor do for a homeowner here?

A concrete contractor tears out the old surface, rebuilds the base underneath it, sets the forms and the steel, pours the mix, finishes it by hand, cuts the control joints, and comes back to seal it. Most of the work that decides whether a slab lasts twenty years or five happens before the truck ever shows up. On a lot built over fill, a well-compacted base and the right joint spacing matter more than the strength of the concrete itself.

The jobs we get called for most are a cracked driveway that has started to rock under the car, a pool deck that's too hot and too slick, a back yard where the grass never recovers from standing water, and a slab that has sunk enough to catch a toe. All four are fixable. Which fix makes sense depends on the base under the slab, not the look of the surface.

What concrete work do we do?

Five things, all of them residential and light commercial flatwork. Most homeowners start by pouring a new driveway, because it's the surface that takes the most weight and shows the most wear. From there the common jobs are the back patio slab, the deck around a pool, a pressed stone or plank pattern on top of any of them, and older concrete that just needs to be patched and resurfaced rather than torn out.

Why does concrete crack and sink on lots in this part of Florida?

Three reasons, and they stack. First, the ground. Most of this city was low, wet ground before anyone platted a subdivision on it, and the lots were built up with hauled-in fill over limestone rock. Fill settles. It settles unevenly, it settles most where it was deepest, and a slab poured over a soft pocket eventually bridges the gap and snaps. That's why one bay of a two-car driveway drops while the other stays put.

Second, water. The water table sits close to the surface here, and in a wet August it comes up higher still. Rain running off a roof gets under the slab edge and pulls the sand out from underneath it a grain at a time. Give that five or six seasons and there's a void under the concrete you can hear when you walk across it.

Third, steel and salt. Groundwater in this area carries enough chloride to corrode reinforcing bar that wasn't set with proper cover. Rusting steel swells to several times its original size, and that pressure pushes the concrete off in flakes from underneath. When you see rust stains bleeding through a slab or edges spalling off in sheets, the problem is below the surface and a patch on top won't hold it.

Tree roots are the fourth one on older streets. Black olive and ficus planted in the swales through the 1980s throw shallow, aggressive roots that lift a driveway apron cleanly off its base.

How does the weather change the way a slab gets poured?

A pour here is a race against the sun. On a July afternoon the surface of fresh concrete can lose water faster than the mix can bleed it back, and the top skins over while the slab underneath is still soft. That gives you crazing and plastic shrinkage cracks within hours, before the concrete has held any weight at all. The fix is scheduling. We pour early, we keep the forms and the base damp, and on the hottest weeks we use an evaporation retarder and start curing the second the finish is closed.

The other half of it is the afternoon storm. From May through October a cell can build over this side of town and drop half an inch in twenty minutes with almost no warning. Rain landing on a slab that hasn't set washes the cement paste out of the surface and leaves a weak, dusty finish that never hardens properly. We watch the radar on pour days and we'd rather move you to the next morning than put concrete down under a sky we don't trust. A rescheduled pour costs you a day. A ruined pour costs you the whole slab.

Hurricane season matters too. Between June and the end of November we keep room in the schedule for storm work, because after a blow we get calls about aprons cracked by fallen limbs and slabs undermined by flooding.

Do you need a permit to redo a driveway in Doral?

Yes. The city requires a building permit to replace or extend a residential driveway, and the application goes through the city's online portal with drawings, a survey or site plan, proof of ownership, and your HOA or condo association's written approval if you're in a community that has one. Plenty of neighborhoods here do.

We handle the permit paperwork as part of the job and we draw the plan to the coverage limit before you approve anything, so you don't find out at inspection that the slab is four feet too wide. One more thing worth knowing: the property owner is responsible for fixing any damage to the sidewalk or the swale caused by the new driveway. We protect both during demolition, which is cheaper than restoring them afterward.

What affects the cost of a concrete job?

Square footage is the starting point and almost never the whole story. These are the things that actually move a number up or down:

• Demolition and haul-off. Breaking out an existing 4-inch slab and trucking the rubble away is real labor. A fresh pour over bare ground skips it.
• What's under the slab. If we open it up and find soft fill or a washed-out pocket, that base has to be dug out, replaced and compacted before anything gets poured.
• Access. A truck that can back straight to the forms is cheap. A back yard behind a narrow side gate means wheelbarrows or a pump, and that's hours.
• Thickness and steel. A walkway and a driveway that parks a loaded pickup are not the same slab. Thickness, mesh or bar, and fiber all factor in.
• Finish. A broom finish is the baseline. Stamping, coloring, exposed aggregate and sealing each add material and a second day of labor.
• Drainage work. If water has to be routed somewhere specific, the slope, a trench drain or a channel drain gets designed in.

We don't quote by phone off a guess. Somebody comes out, measures, looks at where the water goes, and gives you a written fixed price that covers demolition, disposal, permit, base, steel, concrete, finish and cleanup. No allowances that balloon later.

Should you repair the concrete you have or replace it?

The test isn't how bad it looks. It's whether the base underneath is still supporting the slab. Hairline cracks, surface spalling, stains and a tired-looking finish are all surface problems on concrete that's still sitting flat and solid, and that's a repair job. Resurfacing is far cheaper than replacement and it buys a lot of years.

Replace it when the slab has moved. Sections at different heights, a crack wider than about a quarter inch that keeps opening, concrete that rocks or thumps when you step on it, or pieces that have broken clean through and separated all mean the support is gone. You can grind a lip flat and it'll be back next season, because nothing under there changed. We'll tell you honestly which one you're looking at, including when the honest answer is that it can wait another year.

What happens on the day we pour?

We show up early, protect the swale, the sidewalk and anything of yours near the work, and start demolition. Old concrete goes straight into the truck rather than sitting on your lawn. The base gets graded and compacted, forms go in, steel gets tied and chaired up off the ground so it sits in the middle of the slab where it does some good.

The pour itself is usually a few hours. Finishing takes longer, because we work the surface as it sets and cut the control joints at the right spacing to decide where the concrete cracks instead of letting it choose. Then we clean the site, wash the tools out away from your landscaping, and walk you through when you can use it. Foot traffic in about a day. Vehicles in about seven, and we leave the barricades so nobody forgets.

Pricing is a flat written number agreed in advance, cleanup is included rather than an extra line, and the estimate is free whether you hire us or not.

Questions we get asked most

Get a price on your concrete

Call (786) 686-2124 and tell us what you're looking at, or send the form and we'll come measure. We're open Mon–Sat 8am–6pm, estimates are free, and the price we write down is the price you pay.

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