During slab pours, rendering, tiling or core drilling, washwater and slurry often find their way into open or damaged drains, where the cement settles and cures rock-hard. Unlike organic blockages, jetting and eels barely touch it.
Removal typically needs robotic cutting or, for severe cases, excavation of the affected section. Prevention — capping open pipes during building work — is far cheaper than the cure.
A defect term for set cementitious material inside pipes.
Drains on or downstream of building sites, renovations and new slab pours.
A CCTV drain inspection is the standard way to confirm whether this is what's happening in your pipes: the camera shows the condition on screen, a locator pinpoints the exact position and depth, and you get a recorded report before any repair decisions are made.
A CCTV drain inspection shows exactly what's happening inside your pipes — no guesswork.