Once your parking lot has reached its life expectancy (15-25 years) it will be time to start looking at an asphalt overlay. An asphalt overlay is installing 1.5 - 2 inches of surface asphalt over your existing parking lot. This is a viable option as long as the sub-base of your pavement is still stable. The longer you wait to get an overlay the more likely the sub-base will be compromised and the cost will be substantially higher to repair the lot.
