Hello,I live in San Diego CA and installed a 4quot; air duct to my bathroom fanDo I need to insulate the air duct pipe as well if the rest of the attic is already insulated?
Many bathroom exhaust fans are ductless, just evacuating the air directly into the atticNo need for insulation.
Many bathroom exhaust fans are ductless, just evacuating the air directly into the atticNo need for insulation.
