How Does Relining Works?

Have you ever heard about relining? Relining is a term related to pipe repair technology that comes handy when a pipe gets repaired or damaged. This article explains you about the pipe relining technology and the cost incurred for it. Read further to know more about it.

Relining Technology

The technological advancements in pipe repairing and replacement process has led to the development of pipe relining technology. This technology has been in existence for more than 25 years now. To make it simple, this process involves the repairing of pipework from within the already existing pipe. It is done with the help of latest technology where a strong internal liner is inserted into the existing pipeline. The relining pricing is considerably cheaper when compared to the excavating and replacing of the entire pipeline.

How Does It Work?

The process of pipe relining can be defined as the repair and replacement of either a weak or a damaged pipeline. The weak or damaged pipeline is reinforced with the help of a liner, where the liner can either be a tube soaked in resin and is made of felt or any it can be any other semi-permeable material. It can even a flexible section of tube which is sized to cover the interior of the pipe completely.

Pipe relining technology is generally used either to repair the pipe or replace a small section of a damaged pipe when complete replacement of the pipe is not needed.

When a small section of the pipeline is used, it can either be a short pipe for repairing a particular spot or a long section of continuous pipe that lines the entire pipe, the lining pipe is placed intact and the friction helps in sealing the pipe in the exact place. This helps in prevention of leaks or further damage of the pipe. After the installation, the new pipe lining remains intact in the place.

Another way to perform relining is that the use of an epoxy liner. A combination of compressed air and an abrasive agent is used to heat the pipe. The compressed air is blown through the pipe so that if there are any rust or contaminants present within the pipe will be removed. Once this is done, the epoxy liner is blown into the pipe where it sticks faster to the interior walls of the pipe. Once again, the hot and compressed air is blown inside the pipe, and this is done to ensure the epoxy’s even distribution inside the pipe.

Pipe relining

The next method of relining technique is done by lining a PVC pipe that is spirally wound. This spirally wound pipe is lined around the damaged pipeline. This is something similar to the pipelining process, except for the fact that the liner used here is a spiral material. The spiral PVC pipe is placed into the already existing pipeline, and then the spiral pipe is expanded to the interior line of the damaged pipe. A bracing is added to this piping and this bracing acts as the support to the liner. Once the grout gets dried up, the support bracing is cleared from the piping.

Though pipe relining technology is a recent one, this helps in rehabilitation of damaged drain and sewage pipelines that are placed under the ground. Also, this reduces the need for excavation and replacement.