Insulation Question, is Rockwool really the only way!!

We have a glass wool product down under called "Noise Control BlockTM" It retails at about 50% the price of 75mm rockwool and as you can see in the spec is actually 25mm thicker. It has an "R" rating of 2.3. Would this be OK to use in replace of rockwool in my wall/ceiling cavaties. It would really make a difference to my studios cost. [u]Noise Control BlockTM[/u] 1140x580mm size sheets 100mm thick 20 peices per bale 13.22 m2 coverage per bale at 100mm thick 2.3 "R" rating Thanks again JohnG

According to http://www.pinkbatts.co.nz/pdf/3f67c4c33abdb.pdf Noise Control Block has these Sound Absorption Coefficients: (thickness 125 [removed] 2000 4000 NRC) 100mm 0.50 0.85 1.10 1.10 1.10 1.10 1.04 You can compare that to other Rockwool of 75mm and 100mm shown at http://www.bobgolds.com/AbsorptionCoefficients.htm Overall I'd say it's good enough.

John, Is there a link to a distributor of this stuff "down under"...?? thanks

sure, heres the link: www.pinkbatts.co.nz Thanks JohnG