French Drains

Recommended Steps to Install a French Drain

1. Plan the Drainage Route: Identify where the water collects and determine the best route for the drain. The drain should slope away from your home (1% grade, or about 1 inch per 8 feet).
2. Gather Materials: Collect all the necessary materials and tools.
3. Excavate the Trench:
   • Dig a trench about 6 inches wide and 18-24 inches deep along the planned route. Ensure the bottom of the trench slopes away from your home.
4. Add Gravel Base:
   • Pour about 2-3 inches of gravel into the bottom of the trench. This will help with drainage.
5. Lay the Pipe:
   • Place the perforated drain pipe on top of the gravel, with the holes facing down. Ensure it’s positioned correctly to maintain the slope.
6. Cover with Gravel:
   • Add more gravel over the pipe, filling the trench about 3-4 inches above the pipe.
7. Install Landscape Fabric:
   • Lay landscape fabric over the gravel to prevent soil from clogging the drain. Fold the edges of the fabric over the gravel.
8. Backfill with Soil:
   • Fill the trench with soil, covering the landscape fabric. This can be the excess soil you dug out or additional soil.
9. Create an Outlet:
   • If needed, direct the water to a suitable outlet, like a dry well or storm drain.
10. Test the Drain:
    • Run water through the drain to ensure it flows properly.