Best Way To Insulate Attic Ductwork

I called out the original hvac company and they took a look and said they saw no water.

Best way to insulate attic ductwork.

For diy attic insulation you ve got two choices. Before insulating seal any air leaks and make roof and other necessary repairs. Repeat to insulate the remaining ducts. Both can be added to uninsulated attics or layered over existing material.

Wrapping the duct in a foil faced blanket. There is more than one way to insulate ductwork. Once you seal your ducts you can insulate the ducts. It was new when the ac was put in 7 years ago.

But if you go this route you re forgetting something super important. The insulation type will be determined by your ductwork configuration and budget. 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. Humid hot attic air will work its way into the batts until it finds the cold duct board surface that once used to stay warm before you wrapped it and if that surface is cold enough moisture will collect and ruin your nice insulation job.

To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct. The two most common ways to insulate ductwork are. The attic ductwork is flex duct work. Duct liner isn t generally a diy installation and if your ducts already have liner you don t need to insulate the exterior.

Recently i had another hvac company come out and put in a new bathroom vent and they told me they believed the duct work was full of water. 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. Secure the insulation with short strips of foil tape. Loose fill or batt the common term for blanket insulation.

And technically the ducts are insulated afterward. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. Insulate and air seal any knee walls vertical walls with attic space directly behind them in your home as well. Choosing the type of duct insulation.

The only way you can hope to prevent this from happening is to have an absolutely air tight vapor. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Adding insulation to your ducts isn t as simple as getting some duct wrap and taping it together.

Ok some people and contractors do insulate their ducts this way. Duct board much like the duct liner is also a fiberglass product. Wrap the insulation around the duct and then pinch the seam closed.