Outer Plastic Wrap Of Attic Air Ducts

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.

Outer plastic wrap of attic air ducts.

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. Pull the insulation and outer liner of the flex duct up over the collar. Ed mack of air duct professionals in lake elsinore california creates estimates based on the number of ducts to be installed.

Replacement of the duct work is required a significant expense. Today s flexible ductwork is covered with a shiny metallic cover this is its vapor barrier. Wrapping the duct in a foil faced blanket. If your ductwork is over 15 years old you probably should replace it.

Cut pieces of foil insulation tape seal up the. Ductwork has a maximum lifespan of 20 25 years. Also make sure to use hvac tape and seal all of the joints between duct segments. 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.

The two most common ways to insulate ductwork are. Let s say you re thinking about installing a new furnace air conditioning system. Reposition the foil outer insulation to cover the hole as much as possible. The reason ductwork is exposed is because.

Does ductwork go bad. Make sure the flex duct insulation comes in full contact with the insulation on the trunk line or fitting such as a duct boot that it is being attached to. Applying spray foam insulation to the outside of the duct. 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.

You ve looked at few websites and you ve noticed quite a few feature this kind of statement. Some of the foil may be missing but the foil tape will cover the defect. 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. Hvac ductwork is typically visible in your attic especially flexible ductwork.

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