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Sewer Liner Candidacy Evaluation

Liner candidacy is determined by the host pipe’s continuity, shape, grade, diameter, access, branch connections, bends, defects, and ability to be cleaned. A camera inspection is essential, but cleaning and additional measurements may be required before a reliable lining decision can be made.

Warning Signs & Reasons to Schedule Service

  • The pipe has cracks, corrosion, or leaking joints without complete collapse.
  • Surface disruption makes excavation undesirable.
  • The line can be accessed from appropriate points.
  • Roots or scale may be removable enough to prepare the host pipe.
  • The property owner needs a comparison of lining, bursting, spot repair, and excavation.

What the Process Usually Includes

1

Review records and footage

Existing camera video, measurements, material, route, prior repairs, and symptoms are gathered.

2

Clean for a true inspection

Deposits and roots may need removal so the actual wall and geometry can be seen.

3

Measure constraints

Diameter, length, bends, branches, offsets, deformation, grade, access, and cure logistics are evaluated.

4

Compare methods

Lining feasibility, limitations, expected preparation, service interruption, restoration, and alternative repairs are explained.

Advice for Common Situations

1

A camera can miss defects behind deposits

Candidacy should not be finalized from poor visibility.

2

A belly remains a belly

Lining follows the existing route and does not lift a sagging section.

3

Severe deformation can prevent insertion or fit

Shape and remaining opening matter as much as visible cracks.

4

Future access still matters

Cleanouts, branch connections, and maintenance access should be included in the rehabilitation plan.

Sewer Liner Candidacy Evaluation FAQs

What disqualifies a sewer from lining?

Complete collapse, missing pipe, severe deformation, unsuitable grade, inaccessible branches, or inability to clean and prepare the host can disqualify it.

Can clay pipe be lined?

Often, if joints, shape, grade, access, and preparation are suitable.

Does the line need to be dry?

Installation requirements vary by lining system, but active flow and infiltration must be controlled.

Is a second camera inspection needed after cleaning?

Usually yes, because cleaning can reveal defects that were hidden during the initial evaluation.