Insulating Ductwork In Attic Venting

Wrap the insulation around the duct and then pinch the seam closed.

Insulating ductwork in attic venting.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Hercules see all. The duct has r8 insulation which contains 50 more insulation than the standard r4 2 product. This additional insulation provides greater thermal efficiency to save energy.

Model f8ds14 27 86. So water is condensing on your ac ducts. Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal. For diy attic insulation you ve got two choices.

When water condenses and drips into your attic or home it can cause a some serious secondary problems. Unitherm univest insulation jacket high temperature 25 in. Ted also has inherited a powered attic ventilator. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place.

Apply a long strip of foil tape along the seam in the insulation. Length ductwork insulation sleeve r 8. Both can be added to uninsulated attics or layered over existing material. First water dripping off of your ducts and onto your insulation can cause the insulation to compress which decreases it s r value or ability to insulate.

Why is this a problem. To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct. Why is condensation on ductwork a problem. Insulate the bathroom exhaust vent fan ducts.

Repeat to insulate the remaining ducts. Secure the insulation with short strips of foil tape. In this case the temperature gradient between supply air and the ceiling can be such that the duct surface could be cooler than the local dew point. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value.

W insulation wrap. If the insulation around your vent hood duct work becomes waterlogged because of a roof leak or similar problem the insulation s effectiveness will be compromised. Dia x 5 ft. Master flow 14 in.

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. The master flow 6 in. Insulated flexible duct r8 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications. In un conditioned space such as an attic where otherwise your fan duct will be exposed to cold attic air in winter use insulated solid metal ducting or insulated flex duct.

Just as is the case with insulation in other parts of your home you should regularly inspect and maintain the insulation on your duct work. Loose fill or batt the common term for blanket insulation.