7/30/2026 2:43 AM (PST)

Undercutting occurs when flowing runoff finds a path beneath the lower edge of the geotextile wall, carving channels through uncompacted soil. Once undercutting starts, unfiltered water and slurry bypass the barrier entirely, rendering site containment ineffective. Trenching the bottom six inches of fabric into an offset groove and thoroughly compacting backfill dirt seals the base securely against surface flow. Proper anchoring directs water to pool above ground where gravitational settling can take effect. A correctly entrenched silt fence establishes an impenetrable bottom seal, preserving structural integrity during severe weather and heavy runoff conditions. Read More - https://www.singhalglobal.com/products/silt-fence