Smelly Drain in the Bathroom
A drain or sewer smell around the basin, bath or shower, sometimes worse in warm weather..
A drain or sewer smell around the basin, bath or shower, sometimes worse in warm weather.
What is actually going on
A drain or sewer smell around the basin, bath or shower, sometimes worse in warm weather.
The realistic causes, in order
A trap that has dried out in a rarely used bathroom, breaking the water seal A shallow shower trap that siphons empty each time the shower is used A waste connection into a soil stack without an adequate seal or air admittance valve
What we test on site
Every trap in the room for water seal depth Whether traps siphon under normal discharge Stack ventilation and any air admittance valve fitted
What you can safely look at with a drain smell in the bathroom
- Run water into every outlet, including ones you rarely use
- Note whether the smell follows the shower being used
- A missing or failed air admittance valve can allow foul air into a room. It's a small part with a disproportionate effect on the whole bathroom.
Who does the work
- Gas Safe registered engineers — registration 554328
- Worcester Bosch accredited installer
- John The Plumb Ltd, company registration 10026483
Get a drain smell in the bathroom diagnosed properly
Replacing traps and correcting ventilation removes the smell rather than masking it.
Questions we get asked
What causes a drain smell in the bathroom in a bathroom?
A trap that has dried out in a rarely used bathroom, breaking the water seal
What normally puts a drain smell in the bathroom right?
Replacing traps and correcting ventilation removes the smell rather than masking it.
Is it safe to keep using the system with a drain smell in the bathroom?
A missing or failed air admittance valve can allow foul air into a room. It's a small part with a disproportionate effect on the whole bathroom.