Tim: A very common question I receive is about delaminating seal coat. This refers to the chip rock coating (approximately ½ inch thick) that we frequently see peeling off road surfaces. This issue is widespread and important to fix each season but presents a different hazard to motorists than the potholes, etc. I generally think of our asphalt maintenance operations as two phased each season. First priority is to fill the actual holes in the asphalt (potholes, large cracks and other degraded areas are a greater hazard) and the second phase is to fill in areas of missing seal coat. It is often necessary, however, to sweep sand and debris from delaminating areas more frequently than other areas until they can be repaired.