How to Install Perforated Plastic Corrugated Drain Pipes

Perforated drainage pipes are used for a variety of jobs around the house where it's essential to manage moisture and storm water runoff and is especially suitable for subsurface drainage for large areas where cost is a factor. Corrugated drain pipe is flexible and simple to install. Covering the pipe with geotextile cloth protects the perforations from being clogged with debris and sediment. Consult a professional before installing the pipe to ensure the plan is appropriate for the site.

Shovel
Spirit level
Washed gravel, 1/2- or 1-inch size
Geotextile cloth
Perforated plastic corrugated pipe, 4 or 6 inches wide

Instructions

- 1
  Excavate the trench at least 5 to 6 inches wide and 8 to 12 inches deep. Slope the trench so water flows away from structures to the discharge point. Check the slope with the level.
- 2
  Line the bottom of the trench with 2 inches of washed gravel. Lay geotextile cloth on top of the gravel.
- 3
  Lay the pipe with perforations down, and wrap the geotextile cloth around it. Fill around the pipe with at least 1-inch gravel on all sides, to grade level.
- 4
  For grass cover, fill gravel to a few inches below the surface and top with 3 to 4 inches of coarse sand to grade level. Plant with grass seed or let adjoining grass grow in.

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