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Old 05-15-2020, 02:27 PM   #1
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Insulating an exposed beam ceiling.


I'm trying to get things started to insulate my home that was built in 1946, and has no insulation. I'm starting with an add on room 21' x 14' with a flat roof no attic, just exposed beams. I was thinking of adding some 2x4 and putting those foam boards with foil then drywall on top. Will that work? And then for the rest of the house I was going to put the blow in cellous in the attic.
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Old 05-15-2020, 02:36 PM   #2
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Re: Insulating an exposed beam ceiling.


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Originally Posted by St3v3mrtnez View Post
I'm trying to get things started to insulate my home that was built in 1946, and has no insulation. I'm starting with an add on room 21' x 14' with a flat roof no attic, just exposed beams. I was thinking of adding some 2x4 and putting those foam boards with foil then drywall on top. Will that work? And then for the rest of the house I was going to put the blow in cellous in the attic.
You need to look at ventilation above and the amount insulation needed and a ceiling that will not leak air.



On the flat roof, how tall are the (beams) ceiling joists.

Does the roof extend past the outside wall and by how much.

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Old 05-15-2020, 02:52 PM   #3
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Yes they come out of the wall at the end about a foot and a half, the joist are 6x10 I think. From the floor up where the room connects about 8.6ft to the end of the room 8ft.
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Old 05-15-2020, 04:05 PM   #4
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Re: Insulating an exposed beam ceiling.


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Originally Posted by St3v3mrtnez View Post
Yes they come out of the wall at the end about a foot and a half, the joist are 6x10 I think. From the floor up where the room connects about 8.6ft to the end of the room 8ft.
Are you sure they didn't put insulation above the roof as in foam board under the roofing?
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Old 05-16-2020, 08:46 AM   #5
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Re: Insulating an exposed beam ceiling.


I guess it will work, Steve. Just be extra careful while doing the job.
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