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Old 10-06-2016, 02:01 PM   #1
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Ducts Insulation in Attic


I have an older house and the HVAC ducts run through the attic. The insulation on them is pretty old and ratty. I am looking to replace it but not sure what product is best. I have read good and bad things about spray foaming ducts. Any advice as to what would be best?
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Old 10-06-2016, 02:36 PM   #2
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Re: Ducts Insulation in Attic


Where is the home.

Most important thing, before the insulation, is to have them sealed up properly.
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Old 10-07-2016, 09:01 PM   #3
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Re: Ducts Insulation in Attic


Quote:
Originally Posted by Windows on Wash View Post
Where is the home.

Most important thing, before the insulation, is to have them sealed up properly.
and if they are metal, cleaned inside!
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Old 10-07-2016, 10:15 PM   #4
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Re: Ducts Insulation in Attic


They are still seamed together. Be sure to mastic all the seams. At that point, you can just standard duct insulation, spray foam, or rigid foam if the runs are short and you are feeling especially industrious.
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