What is a French drain?

Question

Hi there. May I ask, what is a French drain? What are the pros and cons of these specific drains?

Sean · Accepted Answer

Hi, there are different types of French drain but most are basically a trench dug about 1m deep a drainage pipe with slits laid in the bottom and covered with railway stone about 30mm thick to allow water to drain away from an area like a field.
Pros. Easy to install and cheaper.
Cons I don't see any

Kevin · Answer

It’s the old fashioned name for a land drain. Same principals draining land they aren’t any cons really if they are installed properly

Kevin · Answer

A French drain is a simple soak away trench with an agriculture drain then filled with gravel

Jordan · Answer

A French drain is a storm drain usually fitted as a threshold drain to control surface water in patios/driveways and direct it into either a sewer or a soakaway.

David · Answer

A French drain is a trench filled with clean gravel containing a perforated pipe typically  200mm to 600mm deep which diverts surface water ( soggy ground) to a man-made outlet or existing stream or such like.

Russell · Answer

French drains, aco drains catch surface water. Taking it to underground pipework and dispatching it into soakaways, manholes or catch pits.
Regards Russell Bulling

What is a French drain?

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