We are planning to use closed cell foam on the trunk line which happens to be suspended 4 5 ft above the attic floor to r 21.
Attic duct insulation wrap.
Us energy products 50sqft foam not cheap bubble 24inch x 25ft reflective foam core insulation garage pipe air duct faucet attic roof basement sauna weatherization wrap kit 1 4 thick r8 4 5 out of 5 stars 37.
Proper duct insulation is a major key to ensuring your home s energy efficiency.
Purchase duct wrap insulation that complies with the 2009 international energy conservation code iecc standards that specify an r value of 8 for attic ducts and 6 for ducts located anywhere else.
Secure the insulation with short strips of foil tape.
Apply a long strip of foil tape along the seam in the insulation.
To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct.
Wrap the insulation around the duct and then pinch the seam closed.
I have a single level home with big open attic it has blown insulation and very narrow crawl space but my furnace electric has the single return air duct running about 4 feet from furnace it is in lowered ceiling from bathroom to kitchen my question is can i use a flexible hvac pipe duct an d run a network to living room and two bedrooms.
Repeat to insulate the remaining ducts.