French Drains

Tomorrows project….

• Excavating 8” below top of foundation footing allows clearance for applying a 4” gravel bed layer and positioning the 4” diameter french drain level with top of footing.
• Additional gravel is applied 6” above top of french drain filtering the below grade ground water prior to percolating into french drains perforations.
• French drain perforations “weep holes” are positioned downward in gravel bed allowing water percolation into perforations.
• Reducing the volume of standing water at base of footing prevents hydrostatic pressure and water migration under footing and slab locations.