- Pipe relining is an effective way to repair damaged pipes without replacing them.
- If a pipe is cracked, leaking, or just too old, it needs to be relined.
- The process can be done without any form of demolition.
The following is a transcript of the video.
Instead of digging underground or having to do any demolition to replace or clean sewer lines, Kenneth Kaas heals them from within. He is a Norwegian plumber who specializes in relining pipes. This blue tube you see is pushed through a faulty sewer pipe using pressurized air, which will create a tough new pipe inside the old one. This technique can be used to repair cracked, leaking or old pipes. Some signs that a pipe needs to be inspected include sewer odors, slow drains, and constant clogs. Pipe relining is a faster method than replacements, and it only takes two workers to complete the job. The workers begin by inspecting the inside of the pipe with a small camera. They look for cracks or leaks. Once they’ve assessed the damage, they’ll clean the pipe with water and a spinning chain. This breaks up rust, dirt, hair, sewage and oil embedded inside the pipe. All of this buildup reduced the size of the pipe, making it difficult for waste to pass through. Now that all of this waste has been removed, the pipe has returned to its original size, which will allow the new coating to stick. Now the relining process begins. Workers measure the pipe and cut a piece of felt liner approximately the same size. A vacuum pump draws air from inside the felt to fill it with epoxy resin. They mix the resin by hand. Now that there is no more room for the air bubbles, which weaken the resin, they fill it. Epoxy resin is super tough and chemical resistant. It is also a good choice to prevent tree or plant roots from entering the pipes and clogging them. And since the resin starts out in liquid form, it can be used to repair pipes of all sizes. The team flattens the liner and places it in a compressor. The compressor uses pressurized air to blast the coating into the old pipe. Once inside, the liner is inflated so that it adheres to the walls. A new pipe begins to form inside the old one. It hardens and cures for four hours using pressurized air and the heat of a steamer. Then the liner is deflated, trimmed and removed, leaving behind a new pipe inside. The pipes can be used normally after the work is completed, and no water will be able to seep between the coating and the original pipe. The finished product can last over 50 years, twice as long as new PVC pipe.