All municipalities have different requirements but some do not draw a hard line on requiring exhaust fans.
Roof vents for bathroom exhaust fans.
Venting through a roof vent or exhausting them in the attic could cause moisture problems and rot.
I prefer to run a bath vent to outdoors via a horizontal line that goes across an attic and out through a gable end wall or one that vents down and outside through a roof overhang or soffit.
I see many questions about leaking bath exhaust vents.
Vent your bath and kitchen exhaust fans through the roof through a special roof hood.
Next make sure it is securely fastened on both ends of the pipe.
Next make sure you have one of the new roof exhaust vents on the roof and properly sealed.
In those areas ventilation in bathrooms is required but it can be from a window or fan your choice.
This discussion is now found at bathroom vent up through roof.
Bathroom exhaust fans exhaust fans for your bathroom.
At pure ventilation we stock a range of bathroom fans suitable for small medium or large bathrooms.
12v roof vent ventilation ceiling exhaust fan for rv motorhome trailer 60cfm powerful silent wall and ceiling mount abs caravan roof ventilation extractor fan white 3 9 out of 5 stars 21 60 89 60.
Most bath vents for homes are 3.
I recommend replacing the vent pipe with insulated vent pipe.
Bath exhaust fans routed up through the roof.
The best exhaust fan venting is through smooth rigid ducts with taped joints and screwed to a special vent hood.
This cap features both a back draft damper and bird screen preventing outside air from entering the home and birds and small pests from entering duct work.
Surprisingly bathroom fans are not required by some building codes.