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
The builder assesses soil type and drainage before specifying sub-base depth, so the compacted aggregate layer is thick enough to resist heave and settling from the start.