Found Rock Wool Insulation in my attic

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  #1  
Old 07-13-08, 07:09 PM
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Location: VA
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Found Rock Wool Insulation in my attic

I found some insulation called "Johns-Manville Spintex Insulation" John Fiber Rock Wool.

I did some research and it appears that this is a non-asbestos and non formaldehyde product.

Other research shows that the R-Value is about 14.5 for 3 inches of insulation.

I believe that I am looking for a minimum of R-30 in my attic walls. (When I say attic walls, I am talking some weird cape cod stuff, but this area is definitely attic related.

Do I need to get rid of this stuff and put a minimum of R-30 insulation in.

Can I add the R-30 insulation in on top of this insulation for a greater R value?

Thanks
 
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Old 07-13-08, 07:51 PM
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Originally Posted by jj94auto View Post
I found some insulation called "Johns-Manville Spintex Insulation" John Fiber Rock Wool.

I did some research and it appears that this is a non-asbestos and non formaldehyde product.

Other research shows that the R-Value is about 14.5 for 3 inches of insulation.

I believe that I am looking for a minimum of R-30 in my attic walls. (When I say attic walls, I am talking some weird cape cod stuff, but this area is definitely attic related.

Do I need to get rid of this stuff and put a minimum of R-30 insulation in.

Can I add the R-30 insulation in on top of this insulation for a greater R value?

Thanks
I did some research, this is actually for my knee wall...seems this R-value would be ideal.
 
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