Leaking shower in Thornbury? Here's what to do.
A leaking shower can be cosmetic (failed silicone) or structural (failed waterproofing behind tiles). The first you can fix in an afternoon — the second is the one that ruins ceilings if ignored.
Try this first
Safe steps you can take in the next 10 minutes — in order.
- 1Identify whether the leak appears only when the shower runs, or also when off — different causes.
- 2Strip back perished silicone with a sharp knife and re-seal with a sanitary-grade silicone.
- 3Re-grout any visibly cracked lines.
- 4Check the waste connection from below if accessible (usually via a downstairs ceiling access).
When to stop and call
If you've re-sealed and the leak persists, or if you can see staining on a downstairs ceiling — call now. Hidden leaks become rotted joists in months, not years.
Likely causes
Most cases of a leaking shower in Thornbury homes come down to one of these.
- Failed silicone seal between tray/bath and tiles
- Cracked grout letting water behind tiles
- Failed shower valve seals (drips when off)
- Failed waste seal under the tray
- Original tanking has perished (more common on showers over 12 years old)
What it costs to fix in Thornbury
Quick fix
£120
Typical
£380
Worst case
£1,400
Silicone re-seal under £200; valve replacement around £250–£400; full re-tank-and-tile if waterproofing has failed: £1,200+.
The service that fixes this
Professional shower installation — electric, mixer, thermostatic, and digital systems fitted with proper waterproofing.
See shower installation in Thornbury →Quick questions
Can I fix a leaking shower in my Thornbury home myself?
Sometimes yes — the steps above cover the common DIY fixes. If you've re-sealed and the leak persists, or if you can see staining on a downstairs ceiling — call now. Hidden leaks become rotted joists in months, not years.
What does fixing a leaking shower typically cost in Thornbury?
Around £380 for the typical repair (range £120–£1,400). Silicone re-seal under £200; valve replacement around £250–£400; full re-tank-and-tile if waterproofing has failed: £1,200+.
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 leaking shower can normally wait until the next working day, which keeps the cost down. Genuine emergencies are flooding, no water at all, or gas smells.
Leaking shower in nearby areas
Need someone out today?
We cover Thornbury and the wider South Gloucestershire area for fast plumbing and bathroom repairs.
Call 07927 593 585Recent work nearby
Examples of recent work delivered close to Thornbury. We choose projects from the nearest postcode area first so you can see what's been built locally.
Free written quote for your Thornbury shower installation
Tell us the postcode (BS, GL) and we'll come round, scope the job, and follow up with a fixed-price written quote inside 24 hours.
In short
Most Thornbury clients come to us after a quote elsewhere that felt thin on detail. Ours isn't — every line item is listed, every assumption is named, and we'd rather lose the job than over-promise.
Where we work
Shower Installation 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.