Hi All - I am in the process of putting in a new bathroom ventilation fan and I have a question about insulating the ductwork. I snaked some semi-flexible duct through an adjacent attic and out the roof. The total length is around 7 or 8 feet.
Was wondering if it is necessary to insulate the ductwork in the attic? The guy at the plumbing supply store told me "no" but thought I would check here as well. Not insulating sort of makes sense since it's not like a dryer where you have the potential of hot air passing through a cold attic. However the bathroom will have a whirlpool tub and shower so there is humid air that will be traveling through the duct. Just want to make sure I am not causing problems by not insulating.
Any advice you guys can give would be greatly appreciated.
Thanks in advance.
Was wondering if it is necessary to insulate the ductwork in the attic? The guy at the plumbing supply store told me "no" but thought I would check here as well. Not insulating sort of makes sense since it's not like a dryer where you have the potential of hot air passing through a cold attic. However the bathroom will have a whirlpool tub and shower so there is humid air that will be traveling through the duct. Just want to make sure I am not causing problems by not insulating.
Any advice you guys can give would be greatly appreciated.
Thanks in advance.