I'm in the processing of buying a 2nd floor condo in a two-floor complex. I'm planning to renovate the bathroom and wanted to install a bathroom vent. While I have access to the attic above my unit, I just learned from the property management co. that I am not allowed to install any new vents through the roof. While the bathroom has an exterior wall, it appears I cannot run horizontally in the attic and vent out the side wall because it would breach the wall at the roof line and conflict with the rain gutters.
I've thought of lowering the ceiling just above the tub creating a soffit, which would buy me room to vent out the side wall, but the ceiling is already pretty low and the vent would have to exist directly above the showerhead.
Anyone have any other ideas on how I could vent this? I'm guessing it's advised against tapping into the existing bathroom sewer vent for the fear of backflowing gases. But maybe there's some special piping that might safely allow for this?
Thanks in advance for any suggestions.