Insulated Attic Duct

When these ducts are exposed to exterior air the plastic jacket never gets cold enough to permit condensation because the hot attic air keeps the plastic jacket warm.

Insulated attic duct.

Duct insulation accessories. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal. For pricing and availability. Use metal flex or fiber board ducts that are insulated to code.

Reflectix r 21 100 sq ft unfaced reflective roll insulation 48 in w x 25 ft l item 13358. The duct insulation should include a vapor barrier cover. A metal duct conveying cool conditioned air through a broiling attic in summer or warm air through a chilly crawl. 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.

Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords. Attics that are poorly insulated will not efficiently recycle the air being blown by the ac heat which rises to the attic but with the right r value inches of insulation air will be properly reverted back into the house saving your ac heating unit from overworking and keeping your bills from skyrocketing. Summer hasn t even arrived he notes in a post at gba s q a forum and when the temperature outside climbs to more than 95 f the temperature in the attic tops 120 f.