I have a little doubt about the possible differencies between the properties of rock wool that you talk about, and the one i can get here in Argentina.
So i was wondering if you can help me, telling me what is the best rock wool for the correct appliication.
Ok, here we go.
Here, we have "Isover" a brand who manufactures all kind of rock wool products.
Thay have a line of compressed rock wool called Acustiver, designed for acoustics.
Acoustiver splits in two densities:
Acustiver P: 35 kg/m2
Acustiver P 500: 50 kg/m2
They come in different depths, here, I leave you a chart with NRC and the different depths of the 2 products. (and the link to isover) http://www.isover.com.ar/productos/acustiver_p.html
Between 250 and 2000 HZ
Acustiver P 50 mm NRC=0,82
Acustiver P 70 mm NRC=0,94
Acustiver P 100mm NRC=0,96
Acustiver P500 50 mm NRC=0,84
Acustiver P500 100mm NRC= 0,99
My question is, what kind of rock wool should I use for Corner Bass traps, and what kind for early reflections traps? and, how much rock wool should I use for the basstraps / absorvers? (total depht)
Your answer will be really really appreciated.
Thanks and cheers from Buenos Aires, Argentina!