Posted 10/31/2020 12:37 (#8577929 - in reply to #8577301) Subject: RE: Bathroom or dryer vents ?
NW Washington
Here is a link to some info from the federal building codes on dryer vents. Maine or your county may have some different regulations. Bathroom vents should be insulated if they run through cold unheated spaces on there way to the outside to prevent condensation. https://homeguides.sfgate.com/federal-building-codes-dryer-vents-duc...