CIPP pipe lining, also known as cured in place pipe lining, is a trenchless method for repairing damaged or deteriorated sewer and drain pipes from the inside. The process involves installing a flexible liner saturated with epoxy resin into the existing pipe.
The liner is expanded against the internal walls of the original pipe and allowed to cure. Once hardened, it creates a smooth, continuous and corrosion-resistant cured in place pipe within the existing system.
Because the original pipe route remains in place, CIPP pipe lining can reduce excavation, demolition and restoration compared with conventional pipe replacement. It can be suitable for pipes affected by cracks, leaking joints, corrosion and worn internal surfaces, provided the original pipe retains sufficient structural stability.
Before installation, the pipe should be inspected and thoroughly cleaned to determine whether it is suitable for lining and to prepare the internal surface.