A post-installation camera inspection can show a fold or wrinkle on the inside of a sewer liner. Its location and size matter. A small feature near a bend and a fold that narrows the flow path or affects a branch connection call for different evaluations.
Ask for a clear view and location
Request a clip showing the feature as the camera approaches and passes it, with the distance and direction of travel. Ask whether the opening is reduced, whether debris catches there, and whether a nearby connection remains clear.
Compare the finding with the project requirements
Ask the installer to explain how the feature was evaluated against the agreed scope and installation requirements. Keep the footage and the written response with the job records. If the crew proposes a correction, ask how they will verify the result afterward.
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