Asphalt Milling / Asphalt Resurfacing
Asphalt milling /resurfacing is the process of removing and replacing the top layer of an asphalt pavement. Asphalt pavement for commercial properties is made up of two layers. It consist of one layer of binder course asphalt and a second layer of surface course asphalt. Binder asphalt, which contains a higher percentage of larger stone in the asphalt mix, is the bottom layer that provides the strength of the asphalt pavement. Surface asphalt, which contains smaller, fine stone in the asphalt mix, is less porous then binder asphalt which helps prevent water infiltration of the pavement. Because surface asphalt is not as strong as binder, it is usually the first layer to deteriorate. In this instance, asphalt resurfacing is a good option.
Asphalt Milling & Resurfacing Process
- A milling machine is used to grind down the top layer of asphalt pavement. Usually 1.5-2" for commercial lots.
After the milling procedure, the remaining binder asphalt should be checked to identify problem areas. All problem areas should be patched before the new installation of asphalt.
A tack coat is applied to the pavement to help provide adhesion of the new asphalt.
The top layer of surface asphalt is then applied and compacted. All pavement markings are installed.