Quote:
Originally Posted by Ethan Winer  For large cavities between walls the best material is also the cheapest: plain pink (or yellow) fluffy fiberglass. Fill the gap, but don't pack the fiberglass too tightly. Just enough thickness to fill the gap.
--Ethan |
Thanks Ethan!
Thing is, the gap I have behind the wall is about 2 feet, but I cannot fill the entire 2 feet with insulation... this 2 foot space also serves as a service gap, I need to walk through this gap occasionally to inspect / service pipes etc... I was hoping to add insulation not wider than about 6 inches so that I still have 18" of space to walk. Will 6" of typical "pink" fiberglass stuff be enough, or, because I wish to keep the thickness to only 6", would I benefit from the 703, 705 or mineral wool? In other words, will typical "pink" batt insulation offer enough performance (limited to just 6 inches thick) verses the more expensive stuff? Again, I am trying to cut down on the possibility of low frequencies going through the studio sheetrock walling, hitting the outer concrete walling and then bouncing back into the studio sheetrock walling.
Thanks -
