How to Drill Holes in a Pipe for a French Drain
Drilling holes in a plastic PVC pipe to create a French drain is quite simple. Remember that the pipe for the French drain is only one part of the drainage system. To construct a proper French drain trench, you will also need filter fabric, washed stone, gravel and other components.
Clamp the PVC pipe to a workbench or table.
Snap chalklines the length of the pipe at 10 o'clock, 11 o'clock, 12 o'clock, 1 o'clock and 2 o'clock.
Drill 3/8-inch holes approximately 3 inches apart down each chalk line.
Things You Will Need
- 4-inch diameter Schedule 40 PVC pipe
- 3/8-inch diameter drill bit
- The holes in the French drain pipe typically are placed down in the trench to allow for maximum water penetration.
- Always use construction-grade filter fabric when constructing a French drain to keep fine dirt particles from clogging the drain pipe.