Insulate Return Ducts In Attic

If you want to install cut and cobble insulation on your attic ducts.

Insulate return ducts in attic.

Covering ductwork with insulation. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal. The two most common ways to insulate ductwork are wrapping the duct in a foil faced blanket. Looking at the cooling side only the additional load would be.

Hvac ductwork is typically visible in your attic especially flexible ductwork. As you consider adding insulation first be sure the duct system is delivering proper airflow. Make sure that the rigid foam is secure. All the ducts are in the attic.

Come up with a plan for insulating the underside of the ducts. Add additional sealant if necessary. Summer hasn t even arrived he notes in a post at gba s q a forum and when the temperature outside climbs to more than 95 f the temperature in the attic tops 120 f. I would use foil faced polyiso which is the easiest type of foam to tape and tape it securely 3.

Purchase duct wrap insulation that complies with the 2009 international energy conservation code iecc standards that specify an r value of 8 for attic ducts and 6 for ducts located anywhere else. Insulating a leaky or undersized duct system is a waste of money. Be careful as you choose from the various insulation options. Some insulation types offer high promises but fail to consistently perform in the field.

That has kept the ventilator working but ted surmises the high. Install loose fill insulation to cover the ducts and the attic floor to meet or exceed the code required r value for attic insulation. R 8 duct insulation 5 227 btu hour. First seal the duct seams with mastic.

Or applying spray foam insulation to the outside of the duct. If you need help deciding which type of insulation you need set up an energy consultation. Today s flexible ductwork is covered with a shiny metallic cover this is its vapor barrier. Is it ok to do it.