Discover Repiper’s trenchless pipe lining method for repairing damaged sewer and drain pipes from the inside. Our complete system combines liners, epoxy, tools and a structured installation process to support reliable trenchless pipe relining with minimal excavation and disruption.
OVERVIEW
Trenchless pipe lining is a no-dig method used to repair and restore existing main, lateral and vertical sewer and drain pipes. Instead of excavating and replacing the complete pipe system, a tight-fitting liner saturated with epoxy is installed inside the existing pipe.
Once the liner has cured, it forms a smooth, jointless and corrosion-resistant new pipe inside the original one. This allows damaged pipes to be repaired while retaining the existing pipe route and reducing the need to open floors, walls or outdoor surfaces.
Trenchless pipe relining may also be referred to as pipe lining, CIPP sewer lining, epoxy pipe lining or trenchless sewer repair. Although the terminology can vary, these methods involve creating a new internal lining within an existing pipe.
COMPARISON
Traditional pipe replacement involves accessing, removing and replacing damaged pipes. Depending on the pipe location, this may require excavation or the opening of floors, walls and other surrounding surfaces. Trenchless pipe lining repairs the pipe from the inside, allowing the original pipe route to remain in place. This can significantly reduce digging, demolition and restoration work compared with traditional pipe replacement.
Less digging
The liner is installed through suitable access points, reducing the need to excavate the complete pipe route. Some local access work may still be required depending on the pipe layout and project conditions.
Less disruption
Trenchless pipe relining limits the amount of structural work required around the damaged pipe. This can reduce noise, dust and disruption to buildings and surrounding areas during installation.
Faster installation
Traditional replacement may require separate stages for excavation, pipe removal, installation and surface restoration. A trenchless pipe lining project can often be completed faster because much of this additional work is avoided.
Cost-effective repair
Reducing excavation, demolition and reconstruction can lower labour, machinery and restoration requirements. This can make trenchless relining a cost-effective option when the existing pipe is suitable for lining.
HOW IT WORKS
Trenchless pipe relining follows a controlled process that includes cleaning, liner preparation, installation and curing. The exact installation method depends on the condition, dimensions and configuration of the existing pipe.
The existing pipes are thoroughly cleaned and descaled to remove deposits, corrosion and loose material. Cleaning also exposes cracks, leaking joints and other damage that must be assessed before the liner is installed.
Consistent preparation is essential because material left inside the pipe can affect the position, fit and quality of the completed lining.
Once the pipe has been cleaned and inspected, the selected liner is carefully saturated with two-part epoxy. The liner dimensions and amount of resin are determined according to the pipe diameter, length and installation requirements.
The prepared liner is installed using a suitable method, such as pull-in-place or inversion. The selected method depends on the pipe configuration, liner length and type of repair.
Air pressure is applied so the liner expands closely against the internal walls of the original pipe. This allows trenchless pipe relining to create a continuous new lining within the existing system.
Where individual liners overlap, they should be installed according to the direction of flow and the requirements of the pipe system.
Once correctly positioned, the liner is allowed to cure. Heat may be introduced through hot water or steam to accelerate curing, or the liner may cure at ambient temperature when appropriate.
As the epoxy hardens, it forms a seamless, smooth and corrosion-resistant new pipe inside the original one. A final inspection should then confirm that the liner is correctly installed and the pipe is ready to return to service.
METHOD
Repiper provides a complete solution for residential, industrial, and commercial small-dimension sewer repair. We offer the necessary tools and products and our innovative StepbyStep method to perform trenchless pipe lining. The process only takes a few hours up to a few days depending on the size of the project at a fraction of the cost of traditional methods. Read more about the Repiper method.
ADVANTAGES
The Repiper StepbyStep trenchless pipe lining method provides a practical alternative to traditional pipe replacement. It repairs suitable pipes from the inside while reducing excavation, disruption and restoration work.
OUR OFFERINGS
Through innovative trenchless pipe lining solutions, vast knowledge, and long experience within the industry as both an installer and supplier, Repiper contributes to the sustainable pipe renovations of the future.
Explore our complete offering of relining products, including our patented tools and innovative products made of premium materials. The offering consists of Swedish-developed relining technologies adopted for the US market.
We provide detailed on-site training to both new and existing relining contractors on how to take their operations 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.
What is trenchless pipe lining?
Trenchless pipe lining is a no-dig repair method in which a resin-saturated liner is installed and cured inside an existing pipe. The cured liner forms a new internal pipe surface without requiring the complete pipe route to be excavated and replaced.
What types of damage can trenchless pipe relining repair?
Trenchless pipe relining may be suitable for cracks, leaking joints, corrosion, small holes and deteriorated internal surfaces. The original pipe must retain sufficient stability to support the new liner.
Can trenchless pipe lining be completed without digging?
In many cases, the liner can be installed through existing or local access points without excavating the full pipe route. Some access work may still be required depending on the location, condition and configuration of the pipe.
How long does trenchless pipe lining take?
Installation time depends on the pipe length, diameter, condition, accessibility and curing method. It can often be completed faster than traditional replacement because less excavation and restoration are required.
How is a pipe prepared for trenchless relining?
The pipe is inspected and thoroughly cleaned to remove corrosion, deposits, grease and loose material. Proper preparation creates sufficient space for the liner and helps support a consistent installation.
How is the quality of a trenchless lining installation checked?
The pipe should be inspected after the liner has cured. A camera inspection can confirm that the liner is correctly positioned, fully open and free from visible installation defects.
What is the difference between trenchless pipe lining and pipe coating?
Pipe coating applies a protective surface to a functional pipe. Trenchless pipe lining installs and cures a liner inside a damaged pipe to form a new continuous internal pipe structure.