Cured-in-place pipe is the workhorse of trenchless rehabilitation: a resin-saturated liner installed through existing access and cured into a new structural pipe inside the old one.
How CIPP works
A flexible felt or fibreglass liner is saturated with resin, then installed through a cleanout, manhole or small access pit. With inversion lining, air or water pressure turns the liner inside out as it travels down the pipe, pressing it against the host. With pull-in-place lining, the liner is pulled into position and inflated. Heat, ambient temperature or UV light then cures the resin into a hard, continuous pipe.
The result has no joints for roots to enter, seals cracks and holes, and restores structural integrity to pipe that was corroding or breaking up.
Where we use CIPP
- Sewer laterals and building drains under slabs and parking areas.
- Sewer mains and storm drains on commercial and institutional properties.
- Long runs with bends, where a continuous liner is more practical than sectional repair.
- Cast iron, clay, Orangeburg, concrete and PVC hosts; see pipe materials.
The Progressive process
- Camera inspection and measurement of the line.
- High-pressure cleaning to bare, sound pipe.
- Liner installation and cure to the manufacturer's specification.
- Robotic reinstatement of lateral connections where the line has branches.
- Post-cure inspection video for your records.
Frequently asked questions
Is CIPP a structural repair?
Yes. A properly designed and cured liner is a new pipe within the old one and carries load on its own, which is why it works even when the host pipe is badly deteriorated.
How much access do you need?
Usually an existing cleanout or manhole. Where none exists we open a single small access point instead of a trench along the whole run.
What if the pipe has branches?
The liner covers them during installation and a robotic cutter reopens each connection from inside the pipe afterwards.
Call (877) 325-0180 or request a proposal. Commercial plumbing crews are on call 24/7 across Raleigh, Durham and the Triangle.
Reviews
Trusted by your neighbors
Review from Ashley S., Durham
Ashley S., Durham
I called Progressive because of storm/tree damage, which took out both my power and caused my water main to burst. Progressive could do both. From my initial call to the arrival of the electrician and plumber, I couldn’t have been more pleased. … I would use them again and highly recommend them for your ‘mechanical’ needs.
Review from Wendy L.
Wendy L.
Everything was taken care of today. They were just amazing. They got everything done real quick, no mess, real polite. They were just awesome. … The best news we’ve had since we’ve moved into this house.
Review from Lee & George H., Wake Forest
Lee & George H., Wake Forest
We really appreciate the extra time, phone calls to the supplier, and careful reading of the instructions to do the job right. Gilbert expressed his philosophy as ‘doing the job the way he would want it done in his own home.’ Once again, we are most pleased with the professional and courteous service your company provides.