insulating heating ducts
You can buy 1/2" insulation wrap at the home center that's specifically used to insulate ducts. You wrap the ducts in a liccorice (sp) type-of-manner as you do the install. Then, you can duct-tape the 'ends'. Just be sure the tape goes ALL the way around the duct. Oh, use the Silver Tape; NOT the standard grey duct tape. The HVAC dept. has it.
My best to ya and hope this helps.
Jay J -Moderator
PS: God Bless AMerica!