Foam Insulate Attic Ductwork

The foam provides a vapor barrier so the ductwork won t sweat.

Foam insulate attic ductwork.

As for whether you should use spray foam we are a neutral party. Check the speed of the blower motor on the furnace. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal. Cover the metal ductwork with closed cell spray foam.

Most brands come in rolls a foot in width and several feet long. We are neither pro spray foam nor anti spray foam. Foil backed self adhesive foam duct insulation. At pv we recognize that spray foam is an insulation choice that some people make for their homes.

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. Ted also has inherited a powered attic ventilator. You increase the amount of usable space inside your home. If necessary switch the wires to reduce the blower to its lowest speed.

While fairly thin it works well to dampen sound and can be combined with other forms to increase the insulation rating. Installs easily and wraps around irregular ductwork areas well. Nothing unusual about that. Oh and when you put it in your attic spray foam insulates the attic itself.

Earlier this year i got a question about a home that had spray foam insulation in the attic. Many homeowners love spray foam for the reasons stated. If you want to cover metal ductwork with blown in insulation t hese steps must be followed in this order. Use a paintbrush to apply duct mastic to the joints where an elbow connects to a duct.