Unfortunately so many houses especially newer homes end up with ductwork running through the attic.
Insulated ductwork for attic.
The duct insulation should include a vapor barrier cover.
Press a continuous strip of foil tape to all longitudinal seams along straight runs of duct.
The greater the temperature extreme between the air inside the duct and the air surrounding the ductwork the greater your need for duct insulation.
When hvac ducts are installed in a vented attic in a dry climate bury the ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space.
Covering ductwork with insulation.
If necessary switch the wires to reduce the blower to its lowest speed.
Most attic ducts are insulated flex ducts that is flex ducts with r 6 or r 8 fiberglass insulation along with an exterior polyethylene jacket.
Today s flexible ductwork is covered with a shiny metallic cover this is its vapor barrier.
In this video this old house plumbing and heating expert richard trethewey helps a homeowner insulate his ductwork.
Check the speed of the blower motor on the furnace.
Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords.
Hvac ductwork is typically visible in your attic especially flexible ductwork.
First consider the duct location.
Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal.
Use metal flex or fiber board ducts that are insulated to code.
Is it ok to do it.