John Sayers' Recording Studio Design Forum Archive

Posted: **Thu Feb 19, 2015 2:26 am**

Hi guys!
Im very close to buying all the materials needed to start this build, and before I pull the trigger Id like to confirm that this product will do something useful in the cavity of my MSM design?

http://www.ecobuildingsupplies.ie/item/earthwool

Previously I had used rockwool, but I remember reading that less dense, fluffier material is better in the wall cavity - Is this correct?
If so, the price difference between this and an 'acoustic roll' is significant.

http://www.insulationshop.co/100mm_eart ... knauf.html

thanks in advance. I really dont want to mess this build up!

Les

Posted: **Sat Feb 28, 2015 4:03 am**

I remember reading that less dense, fluffier material is better in the wall cavity - Is this correct?

For mineral wool, you want something in the region of 50 kg/m3. But if you are using fiberglass (not mineral wool), then it should be in the range of about 30 kg/m3. Heavier is better for absorbing higher frequencies, lighter is better for lower frequencies. The above are optimal for cavity insulation, not necessarily for other things.

- Stuart -

John Sayers' Recording Studio Design Forum Archive

Urgent Help! Best insulation, MSM Irish build

Urgent Help! Best insulation, MSM Irish build

Re: Urgent Help! Best insulation, MSM Irish build