Wrapping Attic Ducts

The insulation you use to wrap your ducts should leave no gaps and be at least two inches thick to work effectively at reducing or eliminating condensation on ductwork.

Wrapping attic ducts.

The 1 800 square foot brick ranch in climate zone 4 dates from the 1960s but the previous owner installed both a furnace and ductwork in the attic just four years ago. Secure the insulation with short strips of foil tape. Duct insulation accessories. Wrap the insulation around the duct and then pinch the seam closed.

Or applying spray foam insulation to the outside of the duct. It s like wrapping a leaky pipe with a rag even if it slows down the flow it still will not completely stop a water leak. No air should be able to penetrate the ductwork and the joints are a natural weak point. If you need help deciding which type of insulation you need set up an energy consultation.

For pricing and availability. Ted also has inherited a powered attic ventilator. 4 5 out of 5 stars 110. Frost king cf55 foil backed no itch natural cotton duct wrap 12 inch x 1 inch x 15 feet.

Apply a long strip of foil tape along the seam in the insulation. 4 5 out of. 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. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal.

Also make sure to use hvac tape and seal all of the joints between duct segments. For pricing and availability. Additionally wrapping a duct with insulation does virtually nothing to reduce duct leakage. The duct collar should be sealed with duct mastic to prevent air leakage and make an air tight seal.

Don t use standard cloth duct tape on hvac ductwork since the adhesive won t hold up to extreme temperatures. Cover any air leaks with metallic foil tape made for sealing ductwork. For an added layer of protection you can apply duct mastic to the tape and duct. The two most common ways to insulate ductwork are wrapping the duct in a foil faced blanket.