Best Way To Insulate Attic Ductwork

Ok some people and contractors do insulate their ducts this way.

Best way to insulate attic ductwork.

Once you ve decided which type is best for you examine the material options and prices to home in on the right product. It was new when the ac was put in 7 years ago. Repeat to insulate the remaining ducts. Loose fill or batt the common term for blanket insulation.

But if you go this route you re forgetting something super important. The insulation type will be determined by your ductwork configuration and budget. There is more than one way to insulate ductwork. If it is located in a conditioned part of the house also remember to insulate and air seal your attic access.

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. The two most common ways to insulate ductwork are. 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. When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value.

Choosing the type of duct insulation. Apply a long strip of foil tape along the seam in the insulation. Adding insulation to your ducts isn t as simple as getting some duct wrap and taping it together. Wrap the insulation around the duct and then pinch the seam closed.

To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct. 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. The attic ductwork is flex duct work. 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. I called out the original hvac company and they took a look and said they saw no water. The only way you can hope to prevent this from happening is to have an absolutely air tight vapor. Both can be added to uninsulated attics or layered over existing material.

Before insulating seal any air leaks and make roof and other necessary repairs. Once you seal your ducts you can insulate the ducts. Wrapping the duct in a foil faced blanket. For diy attic insulation you ve got two choices.

Secure the insulation with short strips of foil tape. Duct board much like the duct liner is also a fiberglass product. Duct liner isn t generally a diy installation and if your ducts already have liner you don t need to insulate the exterior.