A lining in a sewer refers to a method of repairing or rehabilitating damaged or deteriorated sewer pipes without the need for extensive excavation or replacement. It involves the installation of a liner or lining material inside the existing sewer pipe to create a new, structurally sound pipe within the old one. This process is also known as trenchless sewer lining or cured-in-place pipe (CIPP) lining.
The lining material, typically made of resin-saturated fabric or a flexible plastic material, is inserted into the sewer pipe through existing access points. It is then inflated and cured in place using heat, steam, or ultraviolet light. As the lining material hardens, it adheres to the interior walls of the existing pipe, creating a smooth and durable barrier.
Sewer lining offers several advantages, including reduced disruption to the surrounding area, cost-effectiveness compared to traditional excavation and replacement methods, improved flow capacity, and resistance to corrosion and root intrusion. It is commonly used for repairing cracked, leaking, or deteriorated sewer pipes, extending their lifespan and restoring their functionality.