Base Settles & Cracks
Virginia clay soil shifts with moisture and freeze-thaw cycles. A sub-base that was not compacted to the correct depth cracks the surface within a few seasons, and no resurfacing job fixes the underlying movement.
Sub-Base Depth Confirmed On-Site
Soil type and drainage are assessed before sub-base depth is specified, so the compacted aggregate layer is thick enough to resist heave and settling from the start.