Dripping overflow in Thornbury? Here's what to do.
A dripping overflow pipe outside your house means a float valve has failed somewhere — usually the toilet cistern, sometimes the cold water tank in the loft.
Try this first
Safe steps you can take in the next 10 minutes — in order.
- 1Identify which overflow it is — match the position outside to the room inside (toilet, airing cupboard, loft).
- 2If the toilet, lift the cistern lid and check whether the water is rising above the overflow tube.
- 3Adjust the float arm down a fraction (older types) — a quick free fix in many cases.
- 4If the valve is clearly leaking past, replace it (£10 part, 30 minutes).
When to stop and call
If you can't access the source, or if a loft tank is overflowing and you can't shut off the supply.
Likely causes
Most cases of a dripping overflow pipe in Thornbury homes come down to one of these.
- Failed float valve in the toilet cistern (most common)
- Failed ballcock washer in a loft cold-water tank
- Float arm bent out of position
- Limescale on the valve seat
What it costs to fix in Thornbury
Quick fix
£75
Typical
£130
Worst case
£280
Most overflow fixes are a callout plus a £10–£40 part.
The service that fixes this
Fast-response emergency plumbing for burst pipes, major leaks, and no hot water — available when you need us most.
See emergency plumber in Thornbury →Quick questions
Can I fix a dripping overflow pipe in my Thornbury home myself?
Sometimes yes — the steps above cover the common DIY fixes. If you can't access the source, or if a loft tank is overflowing and you can't shut off the supply.
What does fixing a dripping overflow pipe typically cost in Thornbury?
Around £130 for the typical repair (range £75–£280). Most overflow fixes are a callout plus a £10–£40 part.
How quickly can someone come out in Thornbury?
For genuine emergencies in Thornbury we usually attend within 1–3 hours during weekdays. For non-urgent jobs we typically book within 2–5 working days.
Is this an emergency?
Usually no. A dripping overflow pipe can normally wait until the next working day, which keeps the cost down. Genuine emergencies are flooding, no water at all, or gas smells.
Dripping overflow in nearby areas
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We cover Thornbury and the wider South Gloucestershire area for fast plumbing and bathroom repairs.
Call 07927 593 585From our portfolio in South Gloucestershire
A small sample of South Gloucestershire work. Every job here was managed by the same team that would handle your Thornbury project.
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In short
We don't try to be everything to everyone. Emergency Plumber within 25 miles of Yate is our patch, and we know it well enough to spot most quirks before stripping out. That's why our quotes stick.
Local context
Emergency Plumber jobs in Thornbury are scheduled around the realities below — postcode coverage, nearest roads, councils involved, and the named places we travel to from there.
South Gloucestershire Council — covering BS, GL postcode districts.
We reach Thornbury via M4, M5, M48 — and serve sites within roughly 25 miles of here.
- Yate~4 mi
- Chipping Sodbury~6 mi
- Dursley~8 mi
- Bristol~10 mi
Aztec West · Severnside
South Gloucestershire is reached via the M5 J14, typically 35 minutes from our base.