What's the difference? Though they sound similar, trench drains and French drains are actually very different. Trench drains ...

French Drain. This drain is a perforated pipe buried adjacent to your homes foundation at about footing depth. The pipe ...

A French drain foundation system consists of perforated underground pipes wrapped in landscape fabric and surrounded by gravel, buried in a trench encircling the house foundation’s exterior.

Therefore the soil in the drainage area should not have large quantities of fine particles like silt and clay because they are likely to cause clogging in the filter. There are a few ways to pretreat ...