Concrete Driveways near you

Almost all of the performance of a driveway is decided before the truck arrives. The existing surface and any soft material come out, the subgrade is proof-rolled and brought to a firm, even grade, and soft spots are dug out and replaced with compacted aggregate rather than filled with extra concrete. Berkeley's specification puts the general rule in one line: subgrades shall be firm to displacement and of an even grade, and soft spots shall be removed and backfilled with aggregate baserock.

Forms then set the line and the fall, reinforcement goes in where the design calls for it, and the concrete is placed, screeded, floated and jointed. The finish matters for traction: Berkeley requires sidewalks and driveways to be finished with a wood float followed by a medium soft broom stroke, and prohibits a steel trowel or slick finish outright. Curing is the last controlled step and the one most often shortchanged; where a membrane compound is used, that city requires it to conform to ASTM C309 and to be sprayed on within one hour after finishing.

Jointing is not decoration; it is where you decide the concrete will crack. Berkeley requires control joints approximately one fifth of the thickness of the concrete in depth, placed transversely about every 10 to 12 feet in sidewalks, at the line between sidewalk and driveway where the thickness changes, and at projecting corners of existing work where contraction cracks are likely to occur. Longitudinal joints are required in driveways in alignment with the front and back edges of the sidewalk. A driveway laid as one unbroken sheet will still crack; it just gets to choose where.

Thickness follows load. The same city sets driveway approaches at 6 inches minimum and ordinary sidewalk at three and a half inches, and where pavers are used it requires a 3 inch concrete base in the sidewalk but a 6 inch concrete base in driveways. Your own city's standard drawing is the number that governs the apron in front of your house, and it is worth having in hand before you compare bids, because a contractor pricing four inches where the city requires six is not cheaper, only wrong.

Air entrainment is the single biggest regional difference in residential concrete in the United States, and it is invisible once the slab is poured. FHWA describes air-entraining admixtures as facilitating the development of a system of microscopic air bubbles within concrete during mixing, and says they increase the freeze-thaw durability of concrete, increase resistance to scaling caused by deicing chemicals, and improve workability. Entrained bubbles are deliberately small, between four ten-thousandths and four hundredths of an inch across, which is what gives the freezing water somewhere close to go.

It is not free. FHWA also notes that air entrainment will reduce concrete strength, and gives the working rule that a 1 percent increase in the concrete air content will decrease the 28-day compressive strength by about 3 to 5 percent. In the frost belt the durability is worth the strength, and a driveway without it is a slab that will scale. In the desert Southwest, where freezing is rare, the trade-off runs the other way. Ask what air content is specified for your delivery and why, and ask whether it will be verified on site.

Before excavation, call 811. Indiana's utility consumer counselor states that Indiana law requires all property owners to make that call before doing any digging on their land, at least two business days in advance, and that the service is free. Oregon's Public Utility Commission tells excavators to call at least two business days before starting any digging project, explains that the state notification center coordinates with utility providers to mark the location of electric, natural gas, communications and water utilities, and takes enforcement actions against excavators who do not use the one-call system. Notice periods are set state by state, so confirm yours.

The apron usually needs a permit of its own. Where the work sits between the gutter and the front property line, cities treat it as work in the public right of way, done under permit and inspection to the city's own specification, and Berkeley goes as far as making the permittee responsible for replacing work that fails within six months where the failure results from non-compliance with those specifications.

Finally, adding hard surface can trigger stormwater rules. Raleigh, North Carolina, counts driveways, patios, decks, roofs and parking areas as impervious surface, treats asphalt and concrete as 100 percent impervious, applies maximum impervious limitations to residential lots and requires an as-built impervious survey when a proposal comes within 10 percent or 400 square feet, whichever is greater, of the maximum allowed. EPA's own guidance points the other direction, noting that pervious concrete, pervious asphalt, interlocking pavers and plastic grid pavers allow rain and snowmelt to seep through the surface. Ask your city which of those it counts and how.

The two maintenance jobs that pay for themselves are keeping the joints sealed and keeping the drive from staying saturated. Grit and water in an open joint work the subbase loose from below, and a slab that goes into a freezing night soaked is the one that scales. Extending downspouts past the edge, clearing the low spot that holds meltwater and resealing joints on a schedule do more for a driveway than any topical product.

Sealers are useful and oversold. They reduce absorption and make stains easier to lift, but they do not add strength, do not fix drainage and do not substitute for entrained air in a cold climate. Whatever you use, follow the label for surface temperature and cure time, and reapply on the manufacturer's schedule rather than when the driveway stops looking new.

Driveway bids separate on what is underneath and on what the city requires, not on the finish photographs. The variables are the area and shape, the specified thickness and whether reinforcement is included, removal and disposal of an existing surface, subgrade correction and imported base, the air content and mix specified for your climate, the jointing plan, the apron and whatever standard your city applies to it, permit and inspection handling, site access for a truck and a pump, and any drainage or stormwater work the project triggers. Ask each contractor to show thickness, base depth and joint layout on the same sketch.

The searching part happens on LokalMatch. Lay the job out one time, covering the rough size, what is on the ground now, how steep the approach is, whether the apron at the street is in scope and the finish you have in mind. Concrete companies working in your area see it, and the ones who want the job get in touch with you. Contractors are charged for the leads; using the site costs a homeowner nothing. LokalMatch does not pour driveways, quote them or rank the firms that do, which leaves the license check, the certificate of insurance and the permit question in your hands.