What R-value is the new duct liner?
It is the only duct wrap available that offers installed R-12 performance in a single layer….
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What is duct liner used for?
Duct liner is a product that is used to line the inside of the duct. Lining a duct with elastomeric foam offers thermal protection from energy loss and condensation control, and also provides sound absorption and vibration damping from airborne and structure-borne HVAC noise.
What insulation is best for ductwork?
Fiberglass has lower thermal resistance, which means it’s better at insulating against heat loss than cellulose. Cellulose also reflects more sound from space than fiberglass does because of its higher density (though both are considered good for noise reduction).
How thick should duct insulation be?
In commercial air conditioning, our minimum duct thickness is always 1″. If the surrounding temperature is higher, we usually use 2″ thick fiberglass insulations….
|Temperature Difference||Recommended Thickness|
|45°F (25.0°C)||1-1/2″ (38mm)|
|50°F (27.8°C)||2″ (50mm)|
What type of insulation is used for ductwork?
When insulating HVAC ductwork, use a foil, faced fiberglass insulation with an R-6 or higher R-value. Use the type of metallic foil duct tape recommended by the insulation manufacturer to seal and hold the insulation in place. Make sure the foil surface of the insulation is free of dust before applying the tape.
Is fiberglass duct liner safe?
Fiberglass, at a minimum, is an acute physical irritant to the skin, eyes, and upper respiratory tract. While no long-term health effects should occur from touching fiberglass. Rashes can appear when the fibers become embedded in the outer layer of the skin.
Can you use spray foam insulation on ductwork?
Once these preparations are made, the ducts can be encapsulated in at least 1.5 inches of closed-cell polyurethane spray foam. Encapsulating the ducts in spray foam increases the R-value of the ductwork and reduces air leakage.