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PostPosted: Thu Jan 10, 2019 1:41 am 
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Location: Atlanta, GA
Thanks Greg, greatly appreciate the support! It's been a slog already and I have tons left to do, but I'm gonna keep just plugging away. Hope you can make some good progress on your build too!

Quote:
Yes, it makes sense to put your outer leaf in front of your furnace.


Awesome, thanks! That's what I figured but it's very helpful to have confirmation.

Quote:
Depending on where it is, you really should have it insulated. Outside of your outer leaf it doesn't matter as much but in that location, it can help with actual furnace/HVAC noise. Inside of your outer leaf, everything should be insulated.


All of the ductwork in the basement is insulated. I'm gonna keep as much of it as possible outside the outer leaf, but on a couple places I think that's just not gonna be possible, so I'm hoping by boxing it it/beefing it up, putting Rockwool in there, and the fact that it's already insulated will not hurt my isolation too much.

Thanks as always! Realistically at this point I am focusing on getting the other rooms done and that's gonna take probably til the baby gets here, but hopefully I can start chipping away at the studio room, and in the meantime I still need to finalize the studio layout, so I'll post again before too too long with updates.


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PostPosted: Fri Jan 11, 2019 6:22 am 
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Location: St. Albert, Alberta, Canada
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All of the ductwork in the basement is insulated.

External insulation over top of the ducts themselves, or are they LINED with duct liner?

What you want is for your ducts to be LINED with duct liner. This is what will improve your insertion loss. Ducts that have external insulation are improved only thermally, not acoustically.

Greg

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PostPosted: Fri Jan 11, 2019 7:27 am 
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I'm not exactly sure, but you can see in the pics - I've attached another one for ease of reference. All ductwork is wrapped in the same shiny insulation.


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PostPosted: Fri Jan 11, 2019 12:48 pm 
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That looks like flex duct to me. Which is externally insulated. Be sure to use internally insulated duct for all of your studio ducts!

Greg

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PostPosted: Sat Jan 12, 2019 5:44 am 
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Whelp, too late for that :( I'm going to put as much as possible behind the outer leaf, and anything that is between leaves will have additional insulation...that's about the best I can do.


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PostPosted: Sat Jan 12, 2019 6:20 pm 
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Whelp, too late for that :( I'm going to put as much as possible behind the outer leaf, and anything that is between leaves will have additional insulation...that's about the best I can do.

The best you can do is just that. At least you're trying your best! :jammin:

Greg

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PostPosted: Sun Jan 13, 2019 2:00 am 
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Location: Santiago, Chile
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I'm not exactly sure, but you can see in the pics - I've attached another one for ease of reference. All ductwork is wrapped in the same shiny insulation.
:shock: That's a bit of a mess, actually! If you show that to a professional HVAC installer, he'd be rather shocked... and would likely suggest that you get that re-done properly. There are ducts over ducts, under ducts, around ducts, with not much discernible organization. But don't feel bad: a lot of houses end up looking like that, because the work was done by a contractor who just wanted to finish quickly, and didn't really plan it right, or do it right. HVAC is the often "poor relative" of the construction proess, that gets the least budget and lowest priority... a sort of "afterthought" tagged on at the end.... producing the type of mess you have there...

I'm sure it works, but it doesn't work with high efficiency, and takes up more space than it needs to....

But anyway, it is what it is! Unless you are prepared to get that re-done properly (which would cost money...), you'll probably just have to live with it...

- Stuart -

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