An Introduction to UV Drain Lining
UV drain lining is a way to repair your damaged drainage pipes without needing disruptive excavation. Drain lining creates a durable, watertight pipe within the old one, extending the life of your drainage system by several decades – often up to 50 years or more.
The new liner will be smooth and seamless, reducing the chances of blockages and improving the water flow through the pipe. It also prevents future root intrusion, which is a common cause of blockages. Here we’ll share our detailed guide on the UV lining process, covering each step from initial inspection to final curing.
How does the UV Drain Lining Process Work?
Inspection and Cleaning
A drain lining specialist such as https://www.drainpower.co.uk/drainage-services/drain-lining/ will begin the process with a thorough CCTV inspection of the drain to determine whether UV lining is suitable. Once the inspection is complete, the pipe is cleaned using mechanical tools or water-jetting to remove scale or any blockages.
Installation
A flexible lining, coated with a UV-reactive resin, is prepared according to the size and length of the pipe. The liner is then positioned in the damaged pipe, making sure that it fits snugly against the inner walls.
Once the liner is in place, it is expanded to press firmly against the interior of the existing pipe. This means it will press closely to the pipe walls, creating a new surface inside the damaged, old pipe.
UV Curing
A UV light is pulled through the pipe, activating and curing the resin within the liner. The curing process is quick, often taking just a few hours, depending on the length and diameter of the pipe. The UV light causes the resin to harden, forming a strong and watertight new pipe within the old one.
Final Inspection
After the curing process is complete, a final CCTV inspection is often carried out to ensure that the liner has cured correctly and the pipe is free of defects. The drain is now fully restored, with the new liner providing a smooth and reliable flow for years to come.