Retaining Wall Water Seepage: Normal or Defect?

The Question

Should a Versa-Lok mosaic stone retaining wall seep water?

Expert Answer

Sean Murphy: Properly built walls (gravel backfill, French drain at base, unclogged pipe) should not seep under normal conditions. Seepage indicates contaminated backfill, missing/clogged drain, or excessive hydrostatic pressure. It’s fairly common but signals a construction flaw.

Remediation Steps

1. Inspect drain pipe outlet for flow.
2. Check backfill: should be clean gravel, not soil-contaminated.
3. Verify filter fabric prevents soil migration into gravel.
4. If seepage persists, excavate behind wall to repair drainage.

For detailed construction guides, visit seanjmurphy.com or amenityarchitects.com.