Ducts In Attic Insulation

Install ductwork so that it is in direct contact with i e laying on the ceiling and or truss lower cords.

Ducts in attic insulation.

Ductwork is the system of ducts and pipes that circulate heated or cooled air throughout your house. In existing homes with vented attics and hvac ducts that are installed on the attic floor bury ducts in blown attic insulation when adding or increasing attic insulation. When hvac ducts are installed in a vented attic in any climate encapsulate the hvac ducts in attic insulation to protect them from temperature extremes in the unconditioned attic space. 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.

If necessary switch the wires to reduce the blower to its lowest. If your attic has enough insulation and proper air sealing and your home still feels drafty and cold in the. The shiny vapor barrier will protect the ductwork from sweating as long as it s exposed to the surrounding air. They are the sheet metal or fiberglass conduits you find in your basement and attic.

Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal. Is it ok to do it. Use a paintbrush to apply duct mastic to the joints where an elbow. 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.

R 8 duct insulation 5 227 btu hour. Covering ductwork with insulation. Or excess flex duct. Before adding blown insulation inspect and test the ducts for missing or torn duct insulation.

Check the speed of the blower motor on the furnace. If you re building a new house place ducts in the conditioned space to avoid the energy losses associated with most duct systems. If the ducts in your home are in unconditioned space seal and insulate them. What is the crawl space a crawl space is usually found under your house.

Looking at the cooling side only the additional load would be. Press a continuous strip of foil tape to all longitudinal seams along straight runs of duct. All the ducts are in the attic. Disconnected or leaking ducts.

Today s flexible ductwork is covered with a shiny metallic cover this is its vapor barrier. According to rightsuite the software we use the supply ducts have about 560 square feet of surface area and the return ducts 101 square feet.