Blocked drains in Greenwich: the usual causes
Greenwich combines Georgian and early Victorian terraces near the town centre, larger detached and semi-detached homes towards Blackheath, and newer riverside flats along the Thames. Older properties frequently retain their original below-ground clay pipework.
By the time a drain overflows, the restriction has usually been forming for a while. Slow gullies, gurgling waste pipes and smells after rain are all the same problem at an earlier stage.
The riverside is tidal and parts of the borough fall steeply from the heath, so surface water arrives fast and finds any weak point in a drain run. Older clay joints, root ingress from mature street trees and displaced sections are the faults we see most often.
How we deal with blocked drains in Greenwich
Every job follows the same sequence, whether it is a single gully or a run serving several flats.
- Lift and inspect the chambers along the run to establish where the flow stops
- Confirm whether the fault sits inside the property boundary or on a shared or public sewer
- Clear the restriction with high-pressure water jetting at a pressure suited to the pipe
- Flush the run through and check the flow from every connected fitting
- Camera the cleared section where the cause is not obvious, so you know the condition of the pipe
Conservation areas and cobbled or stone-set frontages need care when covers are lifted. We work around that rather than forcing access, and we reinstate what we move.
Signs it needs attention now
- Water standing in an outside gully or rising from an inspection chamber
- Several fittings draining slowly at the same time, rather than just one
- Gurgling from a toilet or sink when a different appliance empties
- A drain smell outside that gets worse after rain or in warm weather
- Water backing up into a shower tray or bath at ground level
What we see most often in Greenwich
- Root ingress from mature street trees into older clay pipework
- Displaced joints caused by ground movement on the slopes towards the heath
- Surface water arriving faster than gullies can take it after heavy rain
In Greenwich we work for owners of period houses, for buyers commissioning a survey before completion, and for the managed blocks along the riverside. Conservation-area properties need a careful approach, and we plan for that rather than improvising on the day.
Equipment and what happens afterwards
Our vans carry high-pressure jetting equipment with a range of nozzles, mechanical clearance rods for the situations where jetting is the wrong tool, and a camera with a locator so we can put a mark on the ground above a defect. Choosing between them matters: old clay pipework needs a different pressure from modern plastic, and a nozzle that clears a silted gully can damage a pipe that has already failed.
Once the line is clear we run water through it from every connected fitting rather than declaring the job done at the chamber. If the cause is not obvious, we say so and recommend a survey instead of guessing. You get a plain description of what we found, and if the pipe has an underlying fault you will hear about it from us before it becomes another call-out.
What blocked drains cost in Greenwich
Outside drain clearance is a fixed £144 plus VAT, with no call-out charge. There is no call-out charge in Greenwich, at any hour, and the price you are given on the call is the price you pay.
Areas we cover around Greenwich
Our Greenwich work covers SE10, SE3, SE7 and SE18 and the rest of Royal Borough of Greenwich. Engineers are usually 60 to 90 minutes away, and because we also cover Southwark, Tower Hamlets, Peckham and Dulwich, a job that crosses a boundary does not need a second contractor.