I need to install a french drain long enough to absorb the water from a little less than half of my 1200 square foot homes room so approximately 600 sq. ft of roof. The soil where I live in just like beach sand. It absorbs water very quickly.
1. If I am taking the water off of about of my homes roof how long must the drain be in order to adequately drain the soil.
2. How deep should I bury the french drain? My guess is that I need to dig a 3ft trench then do the layers etc that go along with the french drain.