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Old 12-01-2014, 07:50 PM   #1
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attic insulation improvement

I have an upstairs bedroom that is adjacent to an attic area. The attic floors have fiber glass insulation with some gaps. the wall between attic and bedroom has insulation that looks thinner and brown sawdust looking filler in it. (bungalow style house built in '48)

I'm thinking that old insulation may not be efficient enough and causing drafts.

Should I remove old insulation or can I put newer fiberglass bats over existing insulation?

thanks for any help
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Old 12-01-2014, 08:43 PM   #2
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If you are referring to the insulation on the floor, it will be easiest to just loose fill blow new insulation over top.

If you were referring to the insulation on the vertical walls, you will be best served to remove that insulation, seal the gaps, install new batt insulation, and cover with a rigid foam.

I would also air seal all of the penetrations and air leaks on the attic floor prior to blowing in more insulation.
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