Driveway Repair near you

The base is the usual culprit. A driveway is a thin layer resting on compacted stone and soil, and if that layer was too thin, poorly compacted or laid on soft ground, the surface flexes under every vehicle until it cracks. Once it cracks, water reaches the base and starts carrying fines away, which makes the soft spot bigger. That feedback loop explains why the same patch keeps failing however many times it is filled.

Water is the accelerator. EPA describes how paved and compacted surfaces do not allow rain and snowmelt to soak into the ground, which greatly increases the volume and velocity of stormwater runoff, and a driveway is one of the larger impervious surfaces on a residential lot. Runoff that concentrates at one edge, a downspout discharging onto the slab, or a low spot that ponds will all undermine the edges and the base, and in freezing climates the trapped water expands.

Then there are loads and roots. Driveways are commonly built for cars, not for a loaded delivery truck, a dumpster, a concrete truck during a renovation or a recreational vehicle parked in one spot all season. Tree roots lift and crack slabs from beneath, and removing the visible damage without addressing the root leaves the same lift returning. In snow country, plow blades catch edges and de-icing chemicals attack a concrete surface that was not sealed or was placed in poor conditions.

Patching and crack filling are the right answer when the structure is sound and the damage is local and recent. Cleaning and filling cracks keeps water out of the base, which is the single cheapest thing you can do to extend the life of a driveway that is otherwise in good shape.

Resurfacing, an overlay of new asphalt over the old, or a concrete overlay, is a middle option that works only when what is underneath is stable. Over a base that is moving or a surface with interconnected cracking, an overlay reflects those cracks back through within a season or two, which is why a contractor who proposes one should be able to say why they believe the base is sound.

Full replacement earns its cost when the base has failed over a large area, when the driveway has been patched repeatedly in the same places, when drainage has to be corrected or the grade changed, or when settlement has left sections at different levels. Replacement is also the opportunity to fix the things a repair cannot: the slope away from the garage, the edge support, and how the driveway sheds water. For a settled but otherwise intact concrete slab, slab lifting, where material is injected underneath to fill the void and raise the panel, can be a targeted alternative to demolition.

The part of the driveway between the sidewalk or curb and the street usually is not yours to rebuild as you please. It sits in the public right-of-way, and the transportation or public works department controls work there. Seattle is a clear example: it requires a curb cut permit when you make a new driveway in an existing sidewalk curb, issued by the Seattle Department of Transportation because curbs are on the City right-of-way, with the construction department coordinating on code compliance. Widening a driveway, adding a second approach or changing where it meets the street are all likely to require that kind of permit in any city.

On the private side, permits usually turn on how much surface you add rather than on repairs. Seattle requires a grading permit if you add or replace 750 square feet or more of paving, notes that resurfacing existing pavement does not require a permit, and requires a licensed civil engineer for projects involving more than 5,000 square feet of new or replaced paving. Those figures are Seattle's; the pattern of a square-footage threshold with an exemption for resurfacing is common, but you need your own city's numbers.

There are two more local questions worth asking in the same call: whether your jurisdiction limits impervious surface on a residential lot, which can affect a wider driveway, and whether stormwater rules apply. Repairs that keep the same footprint rarely trigger any of this, but nobody minds the question, and the cost of asking is a phone call rather than a stop-work notice.

Where the ground freezes, the driveway repair season is defined by it. Water in cracks and in a saturated base expands as it freezes and lifts what is above, then leaves a slightly larger void behind when it thaws. That cycle is why northern driveways look worst in early spring and why a crack ignored in the fall is a wider one by April. Frost reaches deep in the north: Minnesota's rules set a minimum footing depth due to freezing of five feet in northern Zone I and three and a half feet in Zone II to the south, which gives a sense of how far below a driveway the frozen ground extends there.

That points to a practical rule: get water out of the driveway before winter rather than after. Sealing cracks, clearing the low spots that pond, and making sure downspouts and gutters discharge away from the slab are fall jobs in cold states. Patching and paving want reasonable temperatures and dry conditions, so asphalt work bunches into the warmer months and books out, while spring is when everyone calls at once.

Warm and dry regions have a different calendar. There the driveway fights ultraviolet exposure, heat and soil that shrinks and swells with moisture, so the repair season is longer but the problems of a dried-out asphalt surface and a moving subgrade take the place of frost.

Almost all driveway maintenance is water management. Fill cracks while they are narrow, keep the edges supported with soil or a proper edge rather than letting them erode, clear leaves and debris from the low side so water can run off, and point downspouts and sump discharges somewhere other than the slab. Removing snow and ice mechanically where you can, rather than relying on chemical de-icers on concrete, spares the surface.

Runoff is worth thinking about at the same time, because a driveway is one of the biggest impervious areas most homes have. EPA's Soak Up the Rain program promotes permeable pavement among the practices that let rain soak into the ground, describing materials that allow rain and snowmelt to seep through the surface down to underlying layers of soil and gravel, and listing pervious asphalt, pervious concrete, interlocking pavers and plastic grid pavers as the options. It also points homeowners to related steps such as disconnecting downspouts, rain gardens and planting trees.

Sealing is where people over-invest. A sealer protects a sound asphalt surface from oxidation and keeps water out of small cracks; it does nothing for a failed base, and a thick coat applied over a driveway that is already breaking up mainly hides what a contractor should be looking at. Ask for the reasoning behind any sealing recommendation, and be wary of an unsolicited crew offering to seal a driveway with material left over from another job.