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Old 01-29-2012, 10:18 AM   #1
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Should I remove old blown insulation in exterior walls


I have removed old sheetrock and found lath board still on walls, with blown insulation in wall, Should I remove old insulation, and re-install new Batts? Will I gain anything? And should I put a moisture barrier on the wall before I re-install sheet rock Thanks

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Old 01-29-2012, 11:07 AM   #2
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Should I remove old blown insulation in exterior walls


Quote:
Originally Posted by jimlane View Post
I have removed old sheetrock and found lath board still on walls...
Will you be removing the lath as well?
If so, you'll have little choice but to replace the insulation there.

How to handle a vapor barrier depends on what else is happening there.
Old homes can be complicated.

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Old 01-29-2012, 06:57 PM   #3
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Should I remove old blown insulation in exterior walls


Welcome to the forums!

1. Where are you located?

2. Describe the wall make-up.

Gary
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Old 01-29-2012, 07:15 PM   #4
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Should I remove old blown insulation in exterior walls


I would. The reason being in an old house like that there's a very real chance or outdated wiring, no blocking at the top and bottom of the walls,
Unsealed areas were wiring was run, settled insulation under windows, at the top of walls and under the diaganals in the outside corners.
Since it's all down I'd also be seailing around the old window frames under the casing with expanding foam.
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