Foamular extruded polystyrene insulation?

wilkinswp · 4th July 2005

Hi all,

I'm hoping some can give me some quick perspective regarding the above as a means of sound absorption. Does the pink Corning "EPS" insulation work as an alternative to rigid fiberglass to absorb mids and highs? Just curious. Guess I'd have read a lot about it if it were good, but can't find any info one way or the other. It seems like it might be too dense to absorb. . . but what do I know?

Thanks in advance for any comments.

wilkinswp · 5th July 2005

no comments?

Bob Ross · 5th July 2005

EPS, or expanded polystyrene foam, does nothing -- zero, zilch, nada -- as far as absorbing mid- and/or high-frequencies in any useful way. Makes nice thermal insulation in a wall, and, if used in a sandwich construction between layers of sheetrock it can aid in lowering sound transmission through that wall. But it will not do doodly-squat as far as acoustic treatment within that room.

wilkinswp · 5th July 2005

Thanks Bob. That's was the answer I thought I'd get. Just wanted to know. Thanks for your comments.

4th July 2005	#1
wilkinswp Gear addict Joined: May 2005 Posts: 414 Thread Starter	Foamular extruded polystyrene insulation? Hi all, I'm hoping some can give me some quick perspective regarding the above as a means of sound absorption. Does the pink Corning "EPS" insulation work as an alternative to rigid fiberglass to absorb mids and highs? Just curious. Guess I'd have read a lot about it if it were good, but can't find any info one way or the other. It seems like it might be too dense to absorb. . . but what do I know? Thanks in advance for any comments.

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5th July 2005	#2
wilkinswp Gear addict Joined: May 2005 Posts: 414 Thread Starter	no comments?

5th July 2005	#3
Bob Ross Lives for gear Joined: Mar 2005 Location: NYC Posts: 2,639	EPS, or expanded polystyrene foam, does nothing -- zero, zilch, nada -- as far as absorbing mid- and/or high-frequencies in any useful way. Makes nice thermal insulation in a wall, and, if used in a sandwich construction between layers of sheetrock it can aid in lowering sound transmission through that wall. But it will not do doodly-squat as far as acoustic treatment within that room.