Sewer Repair vs Pipe Relining

How inspection findings guide the choice between excavation and relining.

By Grade A Plumbing · Published 2026-09-20

Grade A Plumbing plumber carrying out repair work inside a framed wall cavity

01

Start with the confirmed fault

Repair decisions should be based on the pipe material, access, damage and inspection findings—not on a preferred method alone.

02

When excavation may be needed

Collapsed, badly displaced or unsuitable pipes may require access and replacement. Excavation can also be appropriate when the damaged section is easy to reach.

03

When relining may suit

Relining may reduce excavation for eligible pipes that can be cleaned and prepared to support a new internal liner.

Common questions

Frequently asked questions

Is pipe relining always better than excavation?+

No. Suitability depends on inspection findings, pipe condition, access and the nature of the failure.

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