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re: Adding Attic Insulation
Posted on 4/21/20 at 11:02 am to Bawcephus
Posted on 4/21/20 at 11:02 am to Bawcephus
there is not really a "max" limit for attic insulation. Feel free to blow as much as you want up there as long as you don't cover or block any vents. R-50 would be a good typical depth where I am but that is way north of you.
The recommended R-value for Zone 2 where you are is between R-30 and R-60. I would go all the way to R-60 if you are DIY. It won't cost much more and you'll have peace of mind.
The only other suggestion I can give is I am a bigger fan of blown cellulose than fiberglass. The cellulose is a bit heavier and will reduce infiltration better. It will settle and the R value will increase as it ages. It will also increase the performance of your existing insulation.
The recommended R-value for Zone 2 where you are is between R-30 and R-60. I would go all the way to R-60 if you are DIY. It won't cost much more and you'll have peace of mind.
The only other suggestion I can give is I am a bigger fan of blown cellulose than fiberglass. The cellulose is a bit heavier and will reduce infiltration better. It will settle and the R value will increase as it ages. It will also increase the performance of your existing insulation.
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