Pipe lining is a trenchless method used for rehabilitating existing pipelines, which involves inserting a flexible liner into the existing pipeline and curing it in place. This liner creates a new, structurally sound pipe within the old pipe, which eliminates the need for excavation and replacement of the entire pipeline. Pipe lining can be used to repair cracks, leaks, corrosion, and other types of damage, resulting in a more cost-effective and less disruptive solution than traditional pipe replacement.
What Is Pipe Lining
Pipe lining is a trenchless method that rehabilitates existing pipelines by inserting a flexible liner that hardens in place. This creates a new, structurally sound pipe inside the old pipe, eliminating the need for excavation and replacement of the entire pipeline. Pipe lining is an effective and cost-efficient solution for repairing various types of pipeline damage, such as cracks, leaks, and corrosion, with minimal disruption to the surrounding area.
The existing pipeline is inspected with a camera to identify the location and extent of damage, and to determine the appropriate liner material and thickness.
A flexible liner is then inserted into the existing pipeline and positioned in the damaged area using a winch or air pressure. The liner is typically made of a felt or fiberglass material coated with a resin that hardens over time.
The liner is inflated with air or water, pressing it against the walls of the existing pipe and applying pressure to ensure full contact. The resin is then cured in place, either by exposure to ambient air, steam, or hot water, depending on the type of resin used.
Once the resin has fully cured, the liner is trimmed and the ends are reconnected to the existing pipeline. The result is a new, structurally sound pipe within the old pipe, with improved flow and increased durability.