What causes blocked sinks in Balham
Balham is largely Edwardian and late-Victorian terraces and maisonettes, many split into upper and lower flats with separate kitchens stacked over one another. Rear extensions are common and often sit across the original drain run.
A slow sink is a partly blocked sink. The restriction is already there, and every wash adds to it, so dealing with it early is far less disruptive than waiting for it to close completely.
Upper and lower flat conversions produce a specific pattern: the ground-floor property sees the backing up first, even when the cause is a shared restriction further down. Establishing whose pipework is at fault matters as much as clearing it.
What happens when we attend in Balham
We work along the waste run in order, so we find the real restriction rather than the first one.
- 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
Rear access is usually through the lower flat, so we arrange entry with both parties where the drain is shared. Camera evidence makes the conversation about responsibility much shorter.
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 Balham
- Ground-floor flats seeing backing up caused by a shared restriction below
- Extensions built across the original rear drain run
- Kitchen waste from two stacked flats meeting in one undersized run
Balham is largely upper and lower conversion flats, and a good share of our work involves establishing which flat’s pipework is at fault. Camera evidence shortens that conversation considerably, especially where two leaseholders disagree.
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 Balham
Clearing a blocked sink is a fixed £120 plus VAT, with no call-out charge. There is no call-out charge in Balham, at any hour, and the price you are given on the call is the price you pay.
Areas we cover around Balham
We cover SW12 and the surrounding streets of Wandsworth, with engineers typically 60 to 90 minutes from the door. We work across Clapham, Wandsworth, Merton and Wimbledon 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.