Drain relining and patching are important maintenance and repair methods used to fix drainage systems without needing to dig up your garden. Below, we share our guide on how to repair damaged drains.

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Why Would a Drain Need Relining or Patching?

1. Cracks and Fractures

Over time, drains can develop cracks or fractures due to natural wear and tear, ground movement or pressure from heavy traffic above ground. These cracks can cause water to escape into the surrounding soil.

2. Tree Roots

Tree roots are naturally drawn to the moisture that is inside drainage pipes. Over time, roots can force their way in and grow inside the pipes, causing blockages and cracks, or even completely breaking the pipes apart.

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3. Corrosion

   Older drainage systems, especially those made from cast iron or other metals, can rust and wear out. Over time, this corrosion can lead to the thinning of the pipe walls, which will cause leaks

4. Joint Displacement

   Drains consist of multiple sections joined together. Over time, these joints can become displaced due to ground movement. Displaced joints can cause leaks or create gaps where things can enter, leading to blockages.

   How is a drain relined?

   Before relining, a CCTV inspection is carried out to assess the extent and location of the damage. If you are looking for drain lining Ascot, choose a provider such as https://www.drainpower.co.uk/drainage-services/drain-lining/ascot/ that can offer a CCTV survey to identify any issues.

   The damaged pipe is cleaned to remove any build-up or dirt. A resin-coated flexible lining is inserted into the damaged pipe and the liner is inflated to fit tightly. Once cured, the new liner provides a watertight pipe within the old one.
   
   How is a drain patched?

   Like relining, patching starts with a CCTV inspection to pinpoint the exact location of the damage. The area to be patched is cleaned to ensure the patch sticks properly. A resin-coated patch is placed over the damaged area and pressed against the pipe’s wall and the patch is held in place until the resin hardens, sealing the damage.