Technique of Pipe Relining and Traditional Pipe Replacement

There are two tried and tested approaches which plumbers use to maintain and repair underground pipes, pipe relining and the more traditional complete replacement. Each of these methods has advantages and disadvantages depending upon the specific situation, the type of damage, possibilities for access, and the budget.

Pipe relining, also known as trenchless technology, is a method of repairing existing clients by installing a new lining within the existing pipe. This method usually results in a less disruption as it normally requires only small access points to the existing pipe rather than a large-scale digging project. What happens is a resin-coated liner is inserted into the damaged pipe and then inflated, thereby allowing the resin to adhere to the existing pipe’s inner walls. Once the resin has had time to harden, it will effectively create a new seamless pipe inside the existing one. This technique is of particular use in urban areas where digging up parts of the road and pavement is inconvenient or impossible.

On the other hand, the traditional method of pipe replacement will usually involve digging to locate the damaged pipe then removing it and replacing it with a new one. Although this method is effective, it is also invasive and labor-intensive. The digging can be disruptive, leading to traffic jams, unwanted noise pollution, and possibly even damage to nearby structures. However, this method is often necessary if the pipe is too damaged to be relined or if the existing pipe has to be replaced by a larger pipe in order to meet increasing demands on the drainage systems.

Pipe relining always leads to less disruption to the surrounding area. As invasive digging is not required, landscaping, roads, and other structures are unlikely to be damaged, so restoration costs will be low. Furthermore, less heavy machinery will be required, and a smaller crew can undertake the job, so pipe relining is normally quicker and more cost-effective. In addition, a relined pipe can last for decades meaning it is a good long-term investment. Pipe relining also works with various materials such as clay, iron, and PVC.

Traditional pipe replacement however does allow for a complete overhaul of the existing system. This type of more comprehensive job will deal with any underlying existing issues in a drainage system, such as invasive tree roots or poorly aligned joints. It also facilitates the installation of larger pipe systems which can often be required as towns and cities grow and a district is experiencing increasing demands on its water and sewerage infrastructure. However, the increased costs of excavation, labor and restoration, along with extended project timelines, can present a significant downside.

Unfortunately, both of these methods result in some environmental impact. On the whole pipe relining is seen as less environmentally damaging because of the limited excavations required. It also uses less heavy machinery so there are lower emissions and therefore a smaller carbon footprint is produced. Traditional pipe replacement on the other hand can cause significant disruption in the short term despite probably offering greater long-term sustainability and a more durable and higher capacity drainage system.