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.
CIPP Pipe Lining (Cured-in-Place Pipe)
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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 T. Craig D., Chapel Hill
T. Craig D., Chapel Hill
I just wanted to send a note thanking Dwayne Sandy for his careful work while installing my water line and interior plumbing fixtures. … Many thanks for the timely and professional work.
- Review from Joshua N.
Joshua N.
These two gentlemen in my opinion are great assets to your organization and represent it well. We look forward to a continued relationship with Progressive for all our plumbing needs.
- Review from Bhanu Das
Bhanu Das
Joe Oliveira stopped by my home, took time to understand the problem that I was having with the unit, went back and discussed the issue with his team of experts and had a detailed work order sent to me with in a day. … Based on the experience that I have had with Progressive Plumbing, Heating & Air, Electrical, I will HIGHLY recommend them for HVAC install and maintenance.