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.
Repeat to insulate the remaining ducts.
To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct.
The department of energy claims that the average us home loses hundreds of dollars a year in heating and cooling costs.
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.
Close to 25 of the energy you use to heat and cool your home disappears through leaky ductwork.
Wrap the insulation around the duct and then pinch the seam closed.
I am currently working on a project where increasing the duct insulation is essential but i am running into problems finding flex duct or duct wrap with anything higher than r 8.
Proper duct insulation is a major key to ensuring your home s energy efficiency.