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Old 01-04-2010, 04:12 AM   #1
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drywall\duct work


I had a neighbor that has been doing construction for 30 years tell me that the "new" way they are doing drywall around duct work is to screw the drywall directly to the duct work instead of framing it out in situations where headroom is tight. Is he full of it?

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Old 01-04-2010, 05:53 AM   #2
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drywall\duct work


I can say I've seen it done, but it's not a good idea. Duct work is not a structural element and shouldn't be used to support drywall.

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Old 01-04-2010, 07:42 AM   #3
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drywall\duct work


Its a code violation here.
Duct work is not a structural support rated product.

Maybe thats what he does on side jobs to cut cost.
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Old 01-04-2010, 02:23 PM   #4
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drywall\duct work


I have been involved in the HVAC industry for almost 15 years total.

First of all...ALL duct work should be insulated, either for heat loss or to prevent condensation (which could cause water damage). Second, I would check with my local (government) Mechanical Inspector, sounds like a code violation to me. If head room is a problem, then a “fur down” (other names-drop ceiling or soffit) should be constructed and the duct ran within that space.

If you are being told that the duct size is too large and that this is not possible, you may have a HVAC designer that is really a “duct jockey”. NOT ALL air flow problems should simply be solved with a larger duct. The answer may be a second furnace/air handler. Sometimes, it basically comes down to: “do you want to do it cheap or do it right?”
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