Foam Insulate Attic Ductwork

As for whether you should use spray foam we are a neutral party.

Foam insulate attic ductwork.

Foil backed self adhesive foam duct insulation. Cover the metal ductwork with closed cell spray foam. Cover the spray foam with fire retardant spray. Ted also has inherited a powered attic ventilator.

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. Earlier this year i got a question about a home that had spray foam insulation in the attic. At pv we recognize that spray foam is an insulation choice that some people make for their homes. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal.

Many homeowners love spray foam for the reasons stated. Nothing unusual about that. If necessary switch the wires to reduce the blower to its lowest speed. Most brands come in rolls a foot in width and several feet long.

You increase the amount of usable space inside your home. Oh and when you put it in your attic spray foam insulates the attic itself. Check the speed of the blower motor on the furnace. Installs easily and wraps around irregular ductwork areas well.

The foam provides a vapor barrier so the ductwork won t sweat. A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents. Use a paintbrush to apply duct mastic to the joints where an elbow connects to a duct. While fairly thin it works well to dampen sound and can be combined with other forms to increase the insulation rating.