French Drain Installation

We parallel our downspouts inside our French drain system as its own line, but never put that water directly into the drain system. Here we are running dual 4” pipes side by side with a 4” pvc downspout pipe next to those. The system is filtered by 4oz non-woven geotextile fabric and wrapped like a burrito. On top of the pipes will be 1-1/2” river rock. Smooth, round rock has more void space for air and water than angular rock. The trench is flat, but pitches about 1/4” per foot. We put the pipe

Build your French drain like this, We build long lasting low maintenance French drain systems