Cured-in-place
Cured-in-place pipe (CIPP) repair is a trenchless rehabilitation method used to restore damaged pipelines without excavation. The restored pipe improves flow efficiency and extends the lifespan of the existing infrastructure without the need for major excavation or replacement.
How it works:
Preparation: The damaged pipe is cleaned and prepared, typically using high-pressure water or mechanical tools to remove debris, scale, or corrosion. Cameras are used to inspect and assess the pipe’s current condition.
Liner insertion: A flexible liner, saturated with a resin mixture (often epoxy or polyester), is inserted into the existing pipe. This liner is usually pulled through the pipe using air or water pressure, or sometimes it’s pushed in from one access point.
Curing: The liner is then inflated to press against the pipe walls. The resin within the liner is then cured (hardened) using heat or UV light, depending on the method used. This process creates a solid, seamless, and corrosion-resistant pipe within the old pipe.
Finishing: Once the curing process is complete, the pipe is inspected to ensure proper adhesion and structural integrity. The pipe is then ready to use, and any access points are re-covered.
One key benefit of CIPP:
Minimal disruption and cost-effective: CIPP lining is less invasive than traditional methods, as it avoids the need for large-scale excavation. This is especially advantageous in densely populated areas or for pipes under roads, sidewalks, or buildings. The reduced need for digging can save time, lower labor costs, and reduce the environmental impact of construction activities. Additionally, CIPP can often extend the life of a pipeline for many years, offering a long-term solution.