Many builders and laborers put the perforated drain pipe upside down ... is extended to daylight beyond the foundation, you can transition to solid pipe. Slope this pipe 1/4 inch per foot to ...

A French drain is a perforated pipe installed in a trench to collect ... An interior drain gets installed along the interior of the foundation walls of the basement or crawl space.

If you’re installing a French drain around your foundation to prevent basement ... “For maximum effectiveness, use 4-inch perforated PVC pipe,” says Lamprey. PVC lasts longer, and if you ...

If these flooded spots are close to your home’s foundation ... of the pipe, usually in a place where water naturally pools or floods. Water also flows into a French drain pipe along its length ...