I installed our bath, toilet and sink. The sink and bath have the usual
U-bend plumbing pieces as does the toilet (built in).
Every now and again there is a horrible smell in the bathroom like rotten
eggs. No its not my wife ;o) It can sometimes be there for a couple of days
and then disappears again.
I thought the U bends would stop all smells. Is there anything I can try to
eradicate the problem.
It sounds as if you sometimes have a depresion (partial vacuum) in your
waste system which pulling (sucking dry) one or more of your U-bends or
When this problem occurs, does the water level drop in the toilet? What sort
of traps do you have on the bath and basin? You may be able to fit deeper
ones which are less likely to be pulled.
Your soil stack may be inadequately ventillated. Does it go up to roof
level, where it is open to the atmosphere? If not, how is it vented?
Bath ones are often particularly shallow and more prone
to sucking empty. Do any of them girgle away when you
finish draining the sink, bath, or loo?
Also, if this is a vistor bathroom and might go unused
for a while, traps can dry out.
You can get air admitance valves to prevent u-traps being
sucked empty. Either stand-alone to be inserted in the waste
pipe (and bigger versions for soil stacks), or integral with
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.