Paving is the installation of new asphalt to the required thickness and compacted to standards. When regular preventative maintenance is performed on your new asphalt, it will last for 20-30 years before resurfacing is required.
Overlays are the process of creating a new surface by placing a new layer of asphalt over the existing asphalt. Overlays are a more cost-effective solution to completely removing and replacing the existing asphalt. Overlays, with regular preventative maintenance, will last as long as the remove and replace process.