Rigid fiberglass FAQs.

[pdlstl]

Don't know if this has been posted before or not but it sure enlightened me.

http://www.jm.com/insulation/faqs/69.htm

Scroll down for the Sound FAQ's.

Like everyone, I've been searching for a supplier who carries OC 703 (or 705) in the Fort Worth area. However, I came across a supplier who carries the Johns-Manville 800 Series Spin-Glas. This is supposed to be the JM equivalent of the OC 700 Series.

The specs of the JM vs. OC follows:

JM 814 plain 2"

125-0.24
250-1.00
500-1.11
1000-1.08
2000-1.06
4000-1.05
NRC-1.05

OC 703 plain 2"

125-0.17
250-0.86
500-1.14
1000-1.07
2000-1.02
4000-0.98
NRC-1.00

My room is 14'x16'x9' (ceiling). The walls are painted sheetrock, the ceiling is sheetrock with a popcorn surface (blown-on) and the floors are terra cotta tile. The room has frequencies bouncing all over it.

I want to make panels to hang on the walls/ceiling for some absorption/reflection control.

Will the JM product be just as good as the OC?

Thanks,

Earl

On edit:

The supplier is: http://www.eowood.com/ for you in the North Texas area. The site seems to have some broken links but you can get an idea of what they carry.

Earl

[HangDawg]

The JM numbers look a little better.