Asphalt overlays typically add a layer of new asphalt 1.5 to 2.5 inches thick over the existing pavement. Overlays
add strength to the pavement and improve its curb appeal, as a new smooth surface is applied to your existing
parking lot or roadway. Before the overlay is installed, distressed areas must be repaired, otherwise existing
cracks, holes or weak areas will reflect up into the new surface.
The mill and overlay process
- This process entails milling off the edges or the entire pavement surface. Milling also allows the opportunity
to correct any drainage issues.
- Once the process is complete, the portion of asphalt removed (called the millings) are taken away for recycling
at one of our own asphalt plants.
- Next, the area to be overlaid is swept clean of all debris, and coated with a special oil mixture called a tack
coat. The tack coat allows the new asphalt to adhere directly to the underlying pavement.
- Once the tack coat is applied, the asphalt overlay is paved directly over the old pavement.