Greetings all! New to the forum and I'm hoping you all can help me with a plumbing problem. I have a vacation house out in a rural area of WV. The county requires builders to get a permit but they do not have inspectors nor do they required 3rd party inspections. Here is the situation:
- 3 story, 4 bedrooms, 3 baths. One on each level.
- There is a bad sewer gas smell in the upstairs bedroom after someone uses the shower downstairs or upstairs. This only seems to happen during cold weather.
- I plugged the shower, bathtub and sink drains and ran the shower downstairs. The smell was there and the smell seemed to be the strongest near the toilet.
- There is no vent outlet through the roof, but there is a 2" pipe that goes through the exterior wall in the bathroom which I think might be the outlet. It extends about 12" horizontally. The vanity sink vent goes into the same wall but 4 feet lower than the thru-wall pipe.
- I don't know if there are any Studor vents in the house.
- I've been told that the wax ring is likely the culprit, but if so, why wouldn't the smell be present during the warmer months?