Common high-pressure drain jetting problems in Haringey
- ✓ Roots from Highgate Wood, Queens Wood and the Parkland Walk, which need root-cutting nozzles before flushing
- ✓ Repeat blockages on Harringay Ladder shared drain runs, where rodding does not clear the root and grease layer
- ✓ Limescale in older clay pipes throughout Hornsey and Crouch End
- ✓ Debris from steep-gradient pipes on Muswell Hill, Highgate Hill and the Alexandra Park slopes
- ✓ Pipe-wall cleaning before a CCTV survey, lining or repair