Place drain pipe atop fabric lining then add gravel covering pipe completely.
French drain around patio.
Fill the trench with topsoil and compact to completely cover the entire french drain system.
The old way of installing french drains is to do it without the gravel and the fabric.
To build a french drain choose a spot with a slight downhill slope then dig a trench that is about 6 inches wide and 18 to 24 inches deep.
Without the gravel and the fabric however the drain can clog up with sand and soil over time.
The most reliable way to eliminate undesirable free standing water is to install french drains with slotted pipes filter fabric and gravel.
If you need a french drain that can snake around trees or landscaping use corrugated pipe.
Make sure the corrugated pipe has slots so it can drain properly.
Corrugated pipe is usually easier to work with than pvc pipe as it is more flexible and bendable.
Fold over excess fabric lining fold excess fabric over gravel creating an overlap.
When filling the area around the inlet grate temporarily cover the grate to prevent any stones or soil from falling in.
Filling and piping a french drain after.
Use stakes to indicate the drain s path.
Line the trench with water permeable landscape fabric leaving at least 10 inches of excess fabric on either side of the trench.
The french drain should run from the patio area where the water pools to a lower spot on your property.
If you re installing a french drain around your foundation to prevent basement moisture take care to position the pipe below slab or finished floor level.