Outer Plastic Wrap Of Attic Air Ducts

The two most common ways to insulate ductwork are.

Outer plastic wrap of attic air ducts.

Fibrous glass duct wrap insulation is designed for application to the exteriors of commercial and residential sheet metal heating ventilating and air conditioning ducts and plenums operating at temperatures between 40 f 4 c and 250 f 121 c. If your ductwork is over 15 years old you probably should replace it. Also make sure to use hvac tape and seal all of the joints between duct segments. Pull the insulation and outer liner of the flex duct up over the collar.

Ductwork has a maximum lifespan of 20 25 years. Today s flexible ductwork is covered with a shiny metallic cover this is its vapor barrier. You ve looked at few websites and you ve noticed quite a few feature this kind of statement. Ed mack of air duct professionals in lake elsinore california creates estimates based on the number of ducts to be installed.

Duct wrap insulation reduces heat loss or gain through duct walls conserving energy. Applying spray foam insulation to the outside of the duct. The shiny vapor barrier will protect the ductwork from sweating as long as it s exposed to the surrounding air. Does ductwork go bad.

In hot attic spaces or where exposed to uv light the plastic of this flexible air conditioning duct material disintegrates leaving its fiberglass insulation exposed to also disintegrate leak or possibly blow into the building living space. Some of the foil may be missing but the foil tape will cover the defect. If you need help deciding which type of insulation you need set up an energy consultation. The ductwork should be installed so that it is in direct contact with the ceiling and or truss lower cords.

Often pricing per duct run ranges between 150 and 250 from air duct professionals mack explains that a typical single family home may need 6 10 duct runs. Reposition the foil outer insulation to cover the hole as much as possible. If the ducts must be located within a vented attic one option for protecting the ducts and helping to minimize heat transfer between ducts and the unconditioned attic is to lay the ducts on the attic floor and cover them with the same blown insulation that is used to cover the attic floor. Wrapping the duct in a foil faced blanket.

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. Hvac ductwork is typically visible in your attic especially flexible ductwork. Pull the outer liner of the duct up to the outer liner of the trunk line or fitting. Let s say you re thinking about installing a new furnace air conditioning system.

Replacement of the duct work is required a significant expense. No air should be able to penetrate the ductwork and the joints are a natural weak point.