Hello.
Sorry if my question is redundant, but I searched the posts and couldn't quite find one that met the same situation I have encountered.
My wife and I recently bought a home that was built 3 years ago. It has 3 bathrooms, one being in the basement.
The problem we have noticed is a sewage smell coming from the basement bathroom, but have been unable to pinpoint the odor. The toilet wax ring is sealing, and the commode is sealed to the finished flooor. (The basement is finished, as well) The house does have a septic system.
I notice that the smell will go away from time to time, but always re-occurs when a substantial amount of water is run, showers, the dishwasher... etc.
I can't see any visible flaws, since the rooms are finished so I suspect that there may be a venting issue, perhaps even an open or damaged pipe in the wall.
Any suggestions?
Thank You.