Best Way To Insulate Ducts In Attic

Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal.

Best way to insulate ducts in attic.

Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. How to insulate the ductwork determining the right r value. Make sure the foil surface of the insulation is free of dust before applying the tape. Plan to pull up the flooring and layer new insulation on top of the old.

This isn t equivalent to bringing them into the conditioned space as you ll still have additional duct load but it s a lot better than having them in unconditioned attic space. It gets an assigned r value. Because the simplest and cheapest way to insulate an attic is to add material to the floor. Insulation is rated in terms of its thermal resistance.

Use a paintbrush to apply duct mastic to the joints where an elbow. How to insulate the attic air sealing the attic energy saving attic insulation duration. Like any other insulation use additional layers to provide better insulation power. In last week s blog i discussed the practice of burying attic ducts in deep insulation since burying ducts is simply one of several ways to address the energy waste associated with the decision to locate ducts in a vented unconditioned attic it s worth taking a fresh look at all of the possible solutions to the attic duct problem.

Foil backed self adhesive foam duct insulation. Energy saver dealers 204 202 views. Ducts are inherently leaky at. 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.

Add additional sealant if necessary. Choosing the type of duct. But if the floor is covered in plywood you can t stuff enough insulation beneath it to do the job sufficiently not even in warm climates. Installs easily and wraps around irregular ductwork areas well.

Bury the ducts deeply in insulation. Install loose fill insulation to cover the ducts and the attic floor to meet or exceed the code required r value for attic insulation. Check the speed of the blower motor on the furnace. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value.

The duct insulation should include a vapor barrier cover. Ted also has inherited a powered attic ventilator. If necessary switch the wires to reduce the blower to its lowest. Test total duct leakage.

Before you insulate the ducts you need to seal the ducts. To fit your ducts simply cut the sleeve to length with a sharp pair of scissors. That s what happened to the ducts in the lead photo of this article.