Slab Foundation Home Termite Treatment — Subterranean Access Through Concrete

Subterranean termites can enter slab foundation homes through cracks in the concrete slab (common in older construction and in areas with clay soil movement), around plumbing pipes that penetrate the slab, and through the gap between the exterior slab edge and adjacent soil.

The first indication of subterranean activity in a slab home is often mud tubes on the interior wall near a plumbing penetration, or on the exterior foundation wall where soil meets the structure. These are access point indicators.

Termidor treatment for slab foundations involves trenching along the exterior foundation perimeter and drilling through any interior concrete areas where termites are accessing from below. Drill holes are filled after treatment.

Modern slab construction with properly sealed plumbing penetrations and maintained concrete integrity provides good subterranean protection — but older slab homes (pre-1980) may have degraded concrete, failed plumbing seals, and long-term settlement cracks that create access.