Repairs and problems
Why the bathroom smells of drains
The short answer
A drain smell means air is coming back past a seal. Finding which fitting is the leak point is straightforward with a systematic check.
What actually fixes it
- Run each outlet in turn and see whether the smell reduces
- a dried trap refills within seconds.
- If all traps are wet, look at the WC pan
- connector, the stack ventilation or a disconnected waste in a boxed void.
Questions to ask any fitter
Run each outlet in turn and see whether the smell reduces, a dried trap refills within seconds.
Common questions
Do drain cleaners help?
They address residue, not a broken seal, so they rarely fix a genuine smell problem.
Why worse in warm weather?
Warm air makes residue and sewer gas more noticeable, and traps evaporate faster.
Questions about bathroom drain smells?
A short phone call usually answers more than a long email thread. Ask anything, including the awkward questions.