Pipe Lining (CIPP)
Cured-in-place pipe builds a new pipe inside the old one. Nothing is pulled out; the old pipe becomes the mold.
- 01
Clean it out. Roots are cut and cast iron is descaled, because a liner seals over whatever is left on the wall.
- 02
Film the clean pipe. A camera run confirms the pipe is a good candidate and measures it for the liner.
- 03
Put the liner in. A felt or fiberglass tube soaked in resin, usually epoxy, is inverted or pulled into the old pipe and pressed against its walls.
- 04
Cure it. Hot water, steam or UV light hardens the resin into a new pipe with no joints.
- 05
Reopen and film. Any branch line that joins the sewer is reopened from inside with a cutter, and a final camera run shows the result.
A short sectional liner can patch just one bad joint. Ask which standard the liner is installed to; ASTM F1216 covers the inverted kind.
