What causes blocked sinks in the City of London
The City is overwhelmingly commercial: offices, food outlets, bars and a small amount of residential. Buildings range from modern towers with engineered drainage to older premises still connected to Victorian brick sewers.
Sink waste runs are narrow and often have very little fall, particularly where a kitchen has been moved during a refurbishment. Those long shallow runs collect residue much faster than the original layout did.
Catering density is the defining factor. Fat, oil and grease from kitchens is the main cause of restrictions, and where grease management is undersized or poorly maintained the problem returns on a predictable cycle rather than at random.
What happens when we attend in the City of London
The approach depends on whether it is a kitchen or bathroom run, because the material causing it is different.
- Isolate and clear the trap under the sink, protecting the unit below
- Clear the waste run to the point where it joins the stack or gully
- Where the run is shared with other fittings, check those as well
- Flush the line through with volume, not just enough to drain the bowl
- Advise on what caused the build-up so it can be avoided next time
Most work here happens outside trading hours, and building management, permits and inductions are the norm. We plan the visit around the tenant’s operating hours so trading is not interrupted.
Signs it needs attention now
- Water rising in the bowl before it drains away
- A gurgle from the plughole after the water has gone
- A stale smell from the plughole, particularly in a kitchen
- Both sides of a double sink draining slowly
- Water appearing under the unit or at the trap
What we see most often in the City of London
- Fat, oil and grease from catering premises restricting shared runs
- Undersized or poorly maintained grease management producing repeat blockages
- Older brick and clay sewers under buildings that have been heavily altered
Almost all of our City work is commercial: offices, food outlets, bars and managed buildings. Work is typically booked outside trading hours, with permits and inductions handled beforehand, and we report in the format the building requires.
Equipment and what happens afterwards
For sink work we carry small-bore clearance equipment, hand tools for traps and waste fittings, and jetting for the section beyond where hand tools reach. We also carry replacement trap seals and connectors, because a trap that has been disturbed several times over the years often needs replacing rather than refitting.
After clearing we fill and drain the bowl fully rather than running a trickle, which is the only reliable way to see whether the restriction has really gone. We check underneath for leaks at the joints we disturbed, and we tell you what the build-up was made of, because that usually points to a simple change in habit that prevents the next one.
What blocked sinks cost in the City of London
Clearing a blocked sink is a fixed £120 plus VAT, with no call-out charge. We confirm the figure before any work starts, so nothing changes once the engineer is on site in the City of London.
Areas we cover around the City of London
We cover EC1, EC2, EC3 and EC4 and the surrounding streets of City of London, with engineers typically 60 to 90 minutes from the door. We work across Shoreditch, Islington, Tower Hamlets and Westminster as well, so if the fault turns out to sit on a run shared with a neighbouring property we can deal with both ends of it.