West Coast Ac Duct In Attic Insulation

Batt blanket or rolled insulation.

West coast ac duct in attic insulation.

The insulation fibers may be comprised of fiberglass cellulose mineral wool or even recycled blue jeans. Batt insulation consists of long rolls of insulation fibers which are held together with a paper or reflective foil backing. Once you ve decided which type is best for you examine the material options and prices to home in on the right product. Consider adding more insulation as ductwork is farther from the furnace.

The ducts had the standard r 8 insulation you find on attic ducts but then were buried in r 30 ceiling insulation. Table 1 shows effective r values for 8 inch round ducts at three attic insulation levels and three duct insulation levels r 4 2 r 6 and r 8. If your rigid metal ductwork has any insulation it may already have enough. The rigid insulation was saturated from condensation.

It should significantly reduce the heat transfer from the ductwork to the. What is the minimum level of duct insulation to prevent condensation at the outer jacket of buried ducts in hot humid and mixed humid climates. Loose fill or batt the common term for blanket insulation. The old blown in insulation had compressed and no longer did the job.

Both can be added to uninsulated attics or layered over existing material. If you want to cover metal ductwork. For diy attic insulation you ve got two choices. Yes when you bury ducts in attic insulation in a humid climate you increase the risk of water vapor condensation on the jacket of the duct insulation.

So they set up this model home with a buried duct system and installed a lot of sensors. I found instead a vintage 3 ton ac unit with 1 rigid insulation taped all over it and insulated flex duct snaking all over the poorly insulated attic. If it s uninsulated you should insulated it to at least r 4 to r 8 for dfw. But in my last article i also showed you some preliminary results from a research study on buried ducts in a hot humid climate.

We hired west coast to insulate our attic for us. They gave us a fair bid to vacuum out the old insulation and install fiberglass batts to r 38. The cost and effort to add more insulation is minimal. Now if you pull off the old 4 2 insulation and seal all joints and seams in the metal ductowrk underneath with duct approved mastic then reinsulate the ductwork with r 8 0 foil backed duct wrap you will see the greatest improvement your ductwork system is capable of.

The estimator omar came out and was knowledgeable and friendly.