Asphalt Overlays in Rapid City, SD

Asphalt overlays are a new layer of hot-mix asphalt placed over existing pavement. They suit pavement that is faded, raveling and lightly cracked but still firm and flat. HomeGuide estimates an overlay saves 20 to 30 percent compared with tear-out and replacement. The trade-off: an overlay mirrors what is underneath, so cracks over a failed base come right back through.

Reading the pavement

We look for three warning signs. A web of connected cracks, often called alligator cracking, means the base has failed in that area. Heaves and dips mean the ground is moving, which is common on shale and clay. Ruts in the wheel paths mean the pavement is too thin for its load. If those are limited to a few spots, we cut them out and rebuild them, then overlay. If they cover most of the area, we will recommend replacement and show you why.

Preparation does most of the work

Cracks are cleaned and filled, failed sections are saw-cut and rebuilt, the surface is cleaned, and a tack coat is sprayed so the new layer bonds. Along garage floors, sidewalks and approaches, the old asphalt is ground or cut back so the new surface meets flush instead of leaving a lip for water and plow blades to catch.

Height and slope

An overlay adds height. If your driveway already sits close to the garage floor, adding an inch and a half can tip water toward the door. We check every transition and grind where needed. On lots, we keep curb reveals and inlets working so water still drains.

Rapid City timing

Thin lifts of asphalt cool fast, and ground temperature matters more than air temperature. We schedule overlays for the warm months and avoid cold mornings in spring and fall. With the first freeze typically around early October, late-season overlays need careful planning.

What it costs

HomeGuide lists driveway resurfacing at about $3 to $7 per square foot, and its repair guide lists asphalt overlays at $1 to $3 per square foot. The difference is mostly prep: how many patches, how much crack filling and how much grinding come first.

After an overlay

Treat an overlay like new asphalt. Give it a few months before sealcoating, seal cracks as they appear and keep heavy loads off the edges in hot weather.

Overlay on a lot

On commercial lots, overlays are usually done after milling the edges along curbs and gutters so the finished surface still drains into them. Failed areas in drive lanes and at dumpster pads are rebuilt first, since those take the heaviest loads. The new surface is then sealed and restriped once it cures.