Blocked Bath London
Bath draining slowly or completely blocked? We unblock bath drains same day across London — hair, soap scum, and limescale cleared fast. From £65, no call-out fee.
Try This First — DIY Bath Drain Unblock
If the bath still won't drain after these steps — call us. The blockage is past the P-trap and needs professional clearing.
What's Causing Your Bath to Block?
Hair Build-Up (Most Common)
Hair accumulates in the waste grid and P-trap, binding together with soap scum into a dense mass. A single person loses 50–100 hairs per shower — these accumulate rapidly in the waste.
Fix: Drain hair removal tool or rods
Soap Scum + London Hard Water
London's water hardness (280–320 mg/l) causes soap to react with calcium ions, forming an insoluble white/grey residue that coats pipe walls and binds hair blockages.
Fix: Boiling water flush + descale
Limescale Narrowing Waste Bore
Years of London hard water scale build-up gradually narrows the waste pipe bore — a 32mm waste pipe can become effectively 20mm or less over 10–15 years.
Fix: Drain descale or pipe replacement
Blocked Bath Overflow
The overflow channel connects to the same waste pipe. Blocked overflow means water bypasses the main trap. Common in Victorian roll-top baths with siphon overflows.
Fix: Overflow brush clean + flush
Misaligned Waste Trap
In Victorian London properties, the bath waste often runs under the floor. Misaligned or cracked traps allow debris accumulation and loss of water seal.
Fix: Trap replacement — access under bath
External Drain Blockage
If multiple drains are slow (bath + sink + toilet), the blockage is in the shared external waste pipe or soil stack — not the bath itself.
Fix: Drain jetting to external blockage
Blocked Bath Prices — London 2026
| Job | Time | Price |
|---|---|---|
| Blocked bath drain clearance (rods / snake) | 30–60 min | £65–£95 |
| Bath P-trap clean and reset | 30–45 min | £65–£85 |
| Bath drain jetting (deep blockage) | 45–75 min | £95–£150 |
| Bath waste assembly replacement | 1–2 hrs | £95–£180 inc. part |
| Pop-up bath waste replacement | 1–1.5 hrs | £120–£180 inc. part |
| Overflow pipe clear + reconnection | 45–75 min | £75–£120 |
Fixed price before starting. No call-out fee. 7 days a week.
Blocked Bath Drain Service Across London
Blocked Bath FAQs
How much does it cost to unblock a bath drain in London?
Simple blockage in the P-trap or waste grid: £65–£85. Blockage further down the pipe requiring drain jetting: £95–£150. Bath waste assembly replacement: £95–£180. Same-day, no call-out fee.
Why does my bath drain slowly in London?
Almost always hair and soap scum in the waste grid or P-trap. London's hard water (280–320 mg/l) causes soap to react with calcium, forming sticky scum that binds hair into solid masses. Secondary: limescale narrowing the waste pipe bore over years.
Can I unblock a bath drain myself?
Often yes — remove the waste grid cover, pull hair out with a claw tool, flush with boiling water and bicarbonate + vinegar solution, then plunge. If these steps fail, the blockage is deeper in the pipe and needs professional clearing.
What is the overflow on a bath and does it block?
The overflow prevents the bath overfilling — it connects internally to the waste pipe. In old roll-top baths with siphon overflows, the channel can block with soap scum and mould. Clean with a thin bottle brush and bicarbonate solution.
Why does my bath smell even when the drain is clear?
Dry P-trap (run water regularly in rarely-used baths), soap scum decomposing on drain surfaces, or sewer gas being drawn past the trap seal due to a venting issue. If smell persists, call us for diagnosis.
How do I prevent my bath drain from blocking in London?
Install a hair catcher in the waste grid. Flush with boiling water after each bath. Monthly bicarbonate + vinegar treatment. Annual mild acid descale to counter London's hard water limescale narrowing the pipe.
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