Establish access and control flow
Cleanouts, endpoints, branch use, bypass needs, and safe discharge are planned.
Lining preparation removes roots, grease, scale, protrusions, debris, and loose material so the liner can fit tightly and cure against a stable host surface. Preparation may be the most important part of the project because defects left behind can affect liner shape, thickness, branch reinstatement, or final flow.
Cleanouts, endpoints, branch use, bypass needs, and safe discharge are planned.
Jetting, mechanical tools, root cutters, or specialized equipment are used based on material and condition.
The cleaned pipe is camera inspected for diameter, defects, bends, branches, and liner length.
Liner dimensions, resin, cure method, reinstatements, and contingency steps are confirmed.
That risk should be evaluated before preparation begins.
Improper grinding can damage surrounding host pipe or create debris.
Removed scale and roots must not be left to block downstream piping.
Accurate measurements and visible branch locations reduce installation risk.
The goal is not only flow restoration; the host surface and geometry must be suitable for liner fit and cure.
The project may need spot excavation, a different trenchless method, or open replacement depending on the failure.
No. Roots and the intrusion path must be cleaned and evaluated before lining.
Camera footage, measurements, locating, and project records are used so they can be reinstated accurately.