02.8 m · JN
A junction we did not expect.
A lateral from the neighbouring kitchen joins at ten o’clock. It is sound, but it shares the run, so any fix has to account for two households. We have marked it on the plan.
Grade 1 · note only
Sample report · Run 014 · 1930s semi, Hemel Hempstead
14.2 metres. Four things worth knowing.
This is the document you get after a survey: what we found, where it is, how bad it is and the one thing we would do about it. Scroll, and the profile on the left follows the camera.
05.6 m · RM
Tree roots through a joint.
Fine roots have entered the joint and now fill about a quarter of the pipe. They catch tissue and fat, which is why this drain slowed down every few months. Jetting clears them for now; relining stops them coming back.
Grade 3 · act within a year
09.0 m · CL + JDM
A crack, and a joint that moved.
A longitudinal crack and a medium displaced joint, typical of clay that has shrunk in a dry summer. Not yet leaking badly, but it will, and roots love it.
Grade 4 · repair recommended
12.4 m · LNR
The fix, proven.
A 6 m resin patch liner cured over the damaged section in one afternoon, with a second pass of the camera to prove it. No trench, no lost lawn, one day on site.
Grade 1 · fully repaired
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