Best Way To Insulate Heating Ducts In Attic

Ted has more than a few cobwebs in his attic.

Best way to insulate heating ducts in attic.

If it is located in a conditioned part of the house also remember to insulate and air seal your attic access. Wrap the insulation around the duct and then pinch the seam closed. Before insulating seal any air leaks and make roof and other necessary repairs. My next effort with those ducts is to air seal them the best i can and replace the 56 year old insulation with r6 or better.

Loose fill or batt the common term for blanket insulation. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct. 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.

Don t use standard cloth duct tape on hvac ductwork since the adhesive won t hold up to extreme temperatures. Use the type of. Both can be added to uninsulated attics or layered over existing material. For an added layer of protection you can apply duct mastic to the tape and duct.

There are a couple of steps to insulating ductwork. Made from 1 to 2 inch thick sheets of rigid glass fiber and coated with an aluminum laminate for a moisture air barrier duct board comes in. Apply a long strip of foil tape along the seam in the insulation. For diy attic insulation you ve got two choices.

It is best to work with an hvac professional who can make sure you are choosing the right insulation and installing it properly. The unconditioned space also houses his hvac system. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. In my case it is not practical to get my ducts out of the attic.

Duct liner isn t generally a diy installation and if your ducts already have liner you don t need to insulate the exterior. Secure the insulation with short strips of foil tape. How to insulate the ductwork. But our erv ducts stand alone system not tied in w heat pump and 2 jumper ducts for pressure balancing from bedrooms are suspended above the insulation in our vented attic.

Insulation is rated in terms of its thermal resistance. Our heating and ac ducts are 100 within the thermal envelope in the floor trusses above our insulated basement. Duct board much like the duct liner is also a fiberglass product. Repeat to insulate the remaining ducts.