Before Active Resurfacing Starts:
- A few days prior to the resurfacing project, signage will be placed in the neighborhood to alert residents that their streets will soon be resurfaced.
Step #1: Milling: Milling is the process of removing the existing asphalt from the roadway. During the milling process, approximately 1 ½ of the current pavement is ground away. This process typically takes a day, weather permitting.
Step #2: Deep Pavement Repair: After the initial milling of the pavement, crews may need to mill deeper to repair segments of the pavement several inches down under the old surface. This typically takes just a few hours for a subdivision road, while longer roads can take up to a day.
Step #3: Paving: Within 48 hours after milling and completing any deep repairs, crews will begin paving, which should take approximately a half day per standard roadway to cul-de-sac (weather permitting).
- Tack Coat Placement: Tack coat is a sticky, tar-like substance that is sprayed on the road to help asphalt adhere to the roadway. The City of Roswell requires the use of "trackless" tack which minimizes tracking of the material by the paving equipment. Any residue of this material typically washes off within a few weeks.
- Asphalt Placement: A new layer of hot-mix asphalt is laid down.
- Compaction: A variety of roller vehicles are used to compact and smooth the new asphalt.
Step #4: Striping and Clean-Up: Once the new road is ready, crews will perform any necessary cleanup and will paint pavement markings on the new road. Temporary striping is usually painted the same day paving is completed. Permanent striping can take up to 30 days to make sure the asphalt has cured.