Overflow Pipe Fix · Leicestershire
Overflow Pipe FixIn Leicestershire — Stop the DripBefore It Stains the Render.
An overflow pipe is dripping because something inside the house is failing — a cistern fill valve, a header tank float, or a thermal expansion valve. We trace the source, replace the failed part, and stop the drip at its root.
Most repairs in under an hour · 12-month guarantee · Fixed prices from £95
- 18 years' experience
- First-visit fix rate above 90%
- 12-month workmanship guarantee
- Fully insured — £2m public liability
- 1,200+ overflow faults diagnosed
Overview
What overflow pipe fix covers — and why it matters.
What it is
Overflow pipe fix covers diagnosis and repair of the part inside the house that's caused water to discharge through the external overflow pipe — usually a toilet cistern fill valve, a cold-water storage tank float valve, or a thermal expansion valve on a hot-water cylinder.
Who it's for
Anyone who's noticed water dripping or running from a small pipe on the outside wall of their home, often above a kitchen or bathroom window.
When you need it
Today. Overflow is the warning sign — the real waste is happening inside, where the fill valve is running constantly. Every minute the overflow drips, water is being wasted and (on metered properties) billed.
Why professional matters
An overflow that's dripping is doing its job — warning you of a failure inside. Ignored, the failure continues 24/7. A qualified plumber identifies the source in minutes and replaces the failed part, stopping the waste at the source.
What happens if you ignore it
The cost of waiting.
Most homeowners assume an overflow drip is just the overflow — and that the pipe itself is the problem. It's not. The pipe is the warning. The fault is upstream.
Risks if left unrepaired
- Constant overflow staining streaks rendered walls — particularly visible on white and pale colours.
- On metered properties, a running cistern fill valve adds £8–£25 a month to the bill until fixed.
- Header-tank overflows mean the tank float has failed — the tank could be overflowing into the loft as well, depending on water levels.
- Cylinder thermal expansion valves that discharge constantly mean the expansion vessel has failed — a safety as well as a waste issue.
- Constant moisture on the external wall encourages moss and frost damage to brickwork or render.
Common DIY mistakes we see
- Capping the overflow pipe off — never do this. The water has to go somewhere, and inside is much worse than outside.
- Replacing the overflow pipe itself instead of finding the source upstream.
- Assuming it's the cold weather (rarely is — overflow drips are nearly always a failed valve).
- Bending the cistern float arm to 'fix' it — stresses the diaphragm and fails again.
- Ignoring it through the summer because 'it'll dry up' — it won't. It's running 24/7.
Our process
A five-step system — every job, every time.
- 1
Source Trace
Identify which overflow is dripping (toilet, cold storage tank, cylinder T&P valve) and inspect each in turn.
- 2
Isolation
Isolate the relevant feed at the service valve or stopcock. Towels and protection laid before any work begins.
- 3
Replace Failed Part
Fill valve, float valve or T&P valve replaced with the correct WRAS-approved replacement. We carry common stock on the van.
- 4
Test
System refilled and watched through 2–3 fill cycles. Overflow pipe checked dry under sustained working pressure.
- 5
Clean & Sign-Off
Area wiped down, old parts removed, written 12-month guarantee handed over.
Benefits
What you actually get.
Stops the Waste Today
A typical failed fill valve wastes 150–400 litres a day. Fixing it at lunchtime stops the meter spinning by tea time.
Protects Your Render
Catch the drip before the staining sets in. White render with overflow streaks is a pain to clean and a worse paint match to fix.
Insurance-Grade Record
Photo and written repair record — useful if you ever need to show the fault was addressed.
Universal Brand Coverage
We carry Fluidmaster, Wirquin, Geberit, Siamp and traditional Torbeck-style valves on the van.
Quick, Tidy, Done
Most overflow faults are resolved within 60 minutes from arrival to last test.
12-Month Guarantee
Written workmanship guarantee on the replacement part and the fit.
In detail
The technical detail behind a proper overflow pipe fix.
An overflow pipe is a safety device, not a fault. The real diagnosis is which upstream component has failed.
Toilet cistern overflows
Most modern overflows are internal (the fill valve overflows into the pan itself, causing a 'phantom flush' or constant low-level pan refill). Older cisterns vent to an external pipe. Either way, the cause is a failed fill valve or a stuck float — a 30-minute replacement.
Cold-water storage tank overflows
Older open-vented systems have a cold-water tank in the loft, fed by a float valve. When the float valve fails (perished washer, stuck arm, jammed float), water overflows out of the loft and through a 22mm overflow pipe to the exterior. We replace with a Part 1 or Part 2 valve as appropriate.
Hot-water cylinder T&P discharge
Unvented cylinders (Megaflo, Santon) discharge through a tundish to a drain when the temperature and pressure relief valve operates. Constant discharge means either the expansion vessel has lost its charge, the T&P valve itself has failed, or the cylinder is overheating. This is a higher-priority diagnostic — we'll attend on the day where possible.
Identifying which overflow is yours
Different overflows have different pipe sizes and locations — 22mm above kitchen window usually means a toilet, larger 22mm or 28mm under the eaves usually means a header tank. We identify on site.
WRAS compliance
All replacement fill and float valves we fit are WRAS-approved (Water Regulations Advisory Scheme), meaning they meet UK backflow and contamination standards.
When the overflow itself needs work
Occasionally the overflow pipe itself sags, cracks or blocks — in which case water backs up internally. We replace overflow pipework in copper or plastic to current spec and ensure the discharge point is visible and conspicuous (a building reg requirement).
Frequently asked
Overflow Pipe Fix — your questions, answered.
Areas we cover
Overflow Pipe Fix — local to you
- Leicestershire
- Warwickshire
- Birmingham
- Coventry
- Staffordshire
- Derbyshire
- Nottinghamshire
- Northamptonshire
- West Midlands
Based in Dadlington, covering the wider Midlands daily.Check your postcode →
Stop the Overflow Drip — Before It Stains the Wall.
Most overflow faults fixed in under an hour. 12-month guarantee, fixed pricing, no call-out fee in standard hours.
Same-day attendance available across Leicestershire & Warwickshire