Rock Wool & 703

  • Thread starter Thread starter Michael Jones
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Michael Jones

Michael Jones

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I found a local supplier of these materials.
The rockwool sells for 66 cents per sq.ft.
Seem like a pretty good price to me. I need 1400 sq.ft.

Problem is, it comes in 2'x4' bats. My studs are 16" o.c.
That means I could cut the 4' part into 3 16"x2' sections.
Would the dis-continunity (for lack of a better word) of the rockwool in the stud cavity cause any problems?
Sounds like I don't have any choice.

Additionally, my walls are 2x4 staggered stud. I was thinking of using a regular fiberglass insulation on the exterior studs, and the rockwool on the interior studs. The rockwool is 3" thick, and the wall cavity is 5 1/2" thick, so the regular insulation on the exterior seems like a good alternative to fill the added void.

Also found suppliers for O.C. 700 series panels. Its the 2", and it runs 75 cents per sq.ft.
 
Michael - I ended up cutting the rockwool to fit the 16"OC cavities. The slices I took off ended up being stacked in there too. Rockwool is really itchy... definitly wear gloves. I found it to be worse then fiberglass.

Kevin.
 
Michael good to hear you moving along on the studio.

Yep that rockwool seems to be alot worse than fiberglass.
The vendor that I get my 703 from says, they don't even want to order any rockwool for me they hate is so much.

Go figure.

T
 
Sure rockwool may itch but it's made from spun rock which is safer than spun glass fibres ;)

cheers
john
 
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