Blocked External Gully Drain? How a Blackpool Specialist Clears Residential Backups
The blocked external gully is probably the single most misunderstood drainage problem I come across. Homeowners clear the grid, pour water through and call it done — then ring us two weeks later when it’s overflowing again. The P-trap hasn’t been touched. Here’s what it is, why it blocks, and why specialist jetting with CCTV validation is the only approach that actually fixes it properly.
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