Insulating round ERV ducting, foil faced foam, bubble wrap or fiberglass/

Finally got the ducting for the ERV installed.  Now looking at insulating ducts between ERV and outside wall for both inlet and exhaust.I see that the foil faced bubble wrap… Finally got the ducting for the ERV installed.  Now looking at insulating ducts between ERV and outside wall for both inlet and exhaust.I see that the foil faced bubble wrap…Read MoreGreenBuildingAdvisor