As it reaches the French drain, the water moves through the gravel and fills the trench. If the pipe at the bottom of the ...

Landscape staples; Drainage gravel; 4-inch diameter drain pipe with filter sleeve; Alternative: Prefabricated French drain pipe. How to Install a French Drain 1. Decide where you will install the ...

Once the drain tile is extended to daylight beyond the foundation, you can transition to solid pipe. Slope this pipe 1/4 inch per foot to promote rapid water to flow away from the foundation.