Any Tips and Tricks with Insulated Flex Duct? - AVS Forum
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post #1 of 2 Old 02-09-2013, 12:41 PM - Thread Starter
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For those of you who used insulated flex duct for sound proofing, are there any tips and tricks you learned when installing it?

What about where to purchase it -- Does it make a difference or is buying it from Big Box store vs. Local HVAC supplier vs. online?

My Home Theater and Game Room Build -- IN PROGRESS

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post #2 of 2 Old 02-10-2013, 05:36 AM
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Depending on your application there are two kinds of Flex duct used, the garden variety sold at the big boxes which have plastic inner sleeves. They are better than metal but not as good as true acoustical flex duct which has a fabric inner sleeve allowing the insulation to absorb some sound as it travels the length of the duct. The later is usually special order.

Make sure the duct is stretched out not bunched or crushed, wide turns, fasten well at both ends with collar ties and tape. Sometimes even a screw,


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