CIPP Sewer


What is CIPP sewer lining?

Cured-In-Place-Pipe (CIPP) sewer lining is a method of trenchless rehabilitation and restoration of existing main, lateral, and vertical sewer and drain pipes. The process involves lining pre-existing pipe systems in need of repair or rehabilitation with tight-fitting, jointless, and corrosion-resistant replacement pipes and its fittings made of cured epoxy.

As many other industries, the relining industry has several names for the same thing. Sometimes it is difficult to work out what is what and if there is any generic difference between the techniques. Basically, CIPP sewer lining, trenchless sewer lining, and trenchless pipe lining all refer to the same thing. These are the most common names for installing a new structural pipe material inside an original pipe without having to tear down walls, dig, or excavate around the pipe.


How does CIPP sewer lining work?

Trenchless commercial sewer line repair is performed in four steps:

  • Step 1: The pipes are cleaned and descaled to expose damages, but more importantly, to expose and open the old pipe to its original inner diameter. If any scale is left, there is a risk of missing important clues that are crucial to a successful CIPP install. Inconsistent cleaning leads to inconsistent installs.
  • Step 2: A liner is carefully and properly saturated with a two part epoxy.
  • Step 3: The liner is placed in the pipe using either the pull in place method (for sectional or remote installs, tee, wye and straight liners) or the inversion method for longer installs. Air pressure is used for both methods to ensure the liner fills out the original pipe completely. Regardless of method, the epoxy will always be on the outside of the liner.
  • Step 4: When the liner material is in place, heat is introduced to speed up the curing process of the epoxy, for example using hot water or steam curing. During this process the resin hardens, creating a seamless, smooth, structural sound, and corrosion-resistant new pipe inside the old pipe. The liner can also be left to cure by itself without heat. It takes longer and is called “Ambient Curing”.

Above ground, it is important to install the new liners in the flow of water, overlapping. This is to prevent the risk of sewer or drain water getting behind the new lining material over time. This way we can optimize the lifetime of the new CIPP system inside without seal-failure due to poor adherence, which is always a risk when working in old pipes.


The Repiper StepbyStep method

Repiper provides a complete solution for residential, industrial, and commercial small dimension sewer repair, offering both the necessary tools and products, and an innovative StepbyStep method. The entire process only takes a few days and is carried out at a fraction of the cost of traditional methods.


Advantages of the Repiper StepbyStep CIPP sewer lining method

Traditional reparation and rehabilitation of sewer pipes involves acute inconvenience for the owners of the building. The buildings must either be evacuated or the owners will have to deal with noise and dust while the restoration of the pipes is in progress.

Choosing the Repiper StepbyStep system as your CIPP sewer solution provides a host of advantages to the benefit of both the owners of the building and the relining company:

  • Less invasive. CIPP sewer lining with Repiper eliminates infiltration and leaks in pipes without having to dig or excavate. While this is important to normal homeowners, it is critical for businesses such as restaurants, hospitals, universities, and similiar to avoid disruption to their operations. It is also of great value to buildings with historic value to prevent damage to walls and floors.
  • Saves time and money. The very fact that there is no excavation or demolition needed using the CIPP sewer method makes it more cost-effective and less time-consuming.
  • Scalable. The Repiper StepbyStep system is a CIPP sewer process that is more scalable than traditional pipe repair methods, due to it not requiring any big and heavy robots, machines, or equipment to perform the job.
  • Environmentally friendly. There is little to no waste to dispose of after a completed CIPP relining work. Structurally fine parts of the building remain untouched since the work is done remotely inside the pipe through accesses such as vents or cleanouts.
  • Increased quality. Due to the inside being smoother with the new epoxy lining, it increases the flow capacity and calcification deposits no longer stick. It is also corrosion-resistant, which greatly increases the longevity of the pipe itself.


What we offer?

Through innovative CIPP sewer lining solutions, increased dissemination of knowledge, and with long experience within the industry (both as an installer and supplier), Repiper contributes to the sustainable pipe renovations of the future.


Repiper provides a complete offering of CIPP sewer lining products, including our own patented tools and innovative relining products made of premium materials. The offering consists of Swedish developed relining technologies adopted for the US market – “for installers, by installers”.


We provide detailed on-site training to both new and existing relining companies using the CIPP method on how to take their relining to the next level and how to use the Repiper products and StepbyStep method.


Receive support from one of our experienced staff members to plan and ensure the success of your relining projects. We guide and instruct you on how to use our products, tools, and StepByStep method.


CIPP sewer lining is typically made of a flexible tube or fabric material impregnated with a thermosetting resin, such as epoxy or polyester, which hardens and cures to form a durable lining within the existing pipe.

CIPP sewer pipe lining is designed to have a long lifespan, typically lasting 50 years or more, if well maintained.

CIPP sewer lining carries potential hazards such as chemical exposure, heat and fume generation, environmental concerns, and installation challenges, which can be managed through safety protocols and working with experienced professionals.

CIPP sewer repair involves inserting a resin-saturated liner into a damaged pipe, which is then cured to create a new, durable pipe within the existing one

CIPP sewer lining is installed by inserting a resin-impregnated flexible liner into the existing pipe, curing it to create a new, seamless lining adhering to the interior of the original pipe.