Insulating Ductwork In Attic Venting

So water is condensing on your ac ducts.

Insulating ductwork in attic venting.

For diy attic insulation you ve got two choices. Master flow 14 in. To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct. Insulated flexible duct r8 silver jacket is used in standard heating and air conditioning hvac systems and some venting applications.

Loose fill or batt the common term for blanket insulation. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. Length ductwork insulation sleeve r 8. The master flow 6 in.

Both can be added to uninsulated attics or layered over existing material. 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. Repeat to insulate the remaining ducts. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value.

Insulate the bathroom exhaust vent fan ducts. Unitherm univest insulation jacket high temperature 25 in. The duct has r8 insulation which contains 50 more insulation than the standard r4 2 product. When water condenses and drips into your attic or home it can cause a some serious secondary problems.

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. We insulate the bath vent ductwork to minimize the condensation that will otherwise occur as warm moist bathroom exhaust air. Why is this a problem. Wrap the insulation around the duct and then pinch the seam closed.

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. W insulation wrap. Secure the insulation with short strips of foil tape. Ted also has inherited a powered attic ventilator.

Although both the attic floor and the ductwork are insulated ted recognizes the situation isn t ideal. In a vented attic this can happen when the duct is in close proximity to conditioned space i e the ceiling and also thermally isolated from the hot attic beneath the ceiling insulation. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. 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.

Apply a long strip of foil tape along the seam in the insulation. Dia x 5 ft. This additional insulation provides greater thermal efficiency to save energy. Model f8ds14 27 86.

L x 16 in. Hercules see all.