Perforated pipe with filter sock.

[Clarence Martin]

Has anyone seen and used this stuff ? Does it really work ?NDS 4-in x 10-ft Corrugated Drain with Filter Sock Pipe

[Chris Damm]

Yes it works very well for keeping sand out of the pipe.

[Dan Hintz]

Just about every french drain system for houses uses similar stock...

[Lee Schierer]

I wish my french drains had it.

[Ryan Baker]

Yes i've used it and yes it works well.

[Dan Hintz]

I wish my french drains had it.

If they don't, then I'd suggest it's not actually a french drain ;)

[Lee Schierer]

Actually , some of the French drains I have are the clay tile laid end to end type with tar paper over the joints. They still work, but I'm sure there is a lot of sediment in them.

[Mel Fulks]

We had a retaining wall put up about ten years ago.It has a gravel lining about a foot wide separated from the dirt by landscape cloth. Water drains to perforated sock covered pipe at wall bottom and then through solid underground pipe to a stream. It worked right off and has not clogged .