Duct Insulation In Attic

In last week s blog i discussed the practice of burying attic ducts in deep insulation.

Duct insulation in attic.

In this case the temperature gradient between supply air and the ceiling can be such that the duct surface could be cooler than the local dew point. Flexible ductwork comes with different insulation r values. Duct insulation solving condensation heat and cold problems insulation on ducts must protect from condensation radiant heat and cold. Use the type of.

Sometimes the insulation is inside the ductwork. When these ducts are exposed to exterior air the plastic jacket never gets cold enough to permit condensation because the hot attic air keeps the plastic jacket warm. Don t use standard cloth duct tape on hvac ductwork since the adhesive won t hold up to extreme temperatures. Prodex total duct insulation insulation radiant barrier vapor barrier all in one product.

Set up your free estimate contact us today. Add additional sealant if necessary. Most attic ducts are insulated flex ducts that is flex ducts with r 6 or r 8 fiberglass insulation along with an exterior polyethylene jacket. One solution to cold heat and condensation you ll be warm in winter cool in summer and dry all the time.

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. Wrap the insulation around the duct and then pinch the seam closed. Because the moving air is in the ductwork for only a short period of time it does not need the insulation r value the attic floor requires. Solutions to the attic duct problem.

We make your home or building more comfortable in the continental us and canada. Test total duct leakage. The duct insulation should include a vapor barrier cover. Install loose fill insulation to cover the ducts and the attic floor to meet or exceed the code required r value for attic insulation.

Mechanically fasten and mastic seal all duct connections. Repeat to insulate the remaining ducts. For an added layer of protection you can apply duct mastic to the tape and duct. To install preformed duct insulation start by disconnecting an elbow to expose the end of the duct.

When insulating hvac ductwork use a foil faced fiberglass insulation with an r 6 or higher r value. Other times insulation may be on the outside. Since burying ducts is simply one of several ways to address the energy waste associated.