I'm putting in a bathroom exhaust fans into two adjoining bathrooms
that never had an exhaust fan installed by the builder.
My question is, the two fans will be no further than a few feet apart.
I bought fans that have a one way flapper. Can I simply join the ducts
from both of them in the attic and vent out of one roof vent?
Venting out of the side of the attic wall is also an option as it's
only a few feet away, but I assume venting out to the roof is best?
Also, is there a website that shows in detail how to install the roof