Presently, my two bathrooms have exhaust fans venting straight into the roof attic space. I do not believe that my roof has any ventilation system at all. I am concerned that this may promote unhealthy air which filters down into the living areas below. Are these concerns valid?
I am considering installing ducted versions of the exhausts fans which exhaust air outside through the roof. Or I could install a draught stopper version of the exhaust fan to prevent air from coming down from the roof. I would also like to install some sort of roofing ventilation like those twirling whirlybird ventilators. Would these address the issues above?
Chris