What about these styrofoam sheets I aquired???

[Deadboyy]

Yea im trying to soundproof a portion of my basement and im going to do the ceiling first.

OK my plan (hope its right)---
First----------felt paper
Second ------R19 insolation...
Third----------Styrofoam sheets ( 7-to8-inches thick)
Fourth--------sheetrock
Last-----------Carpet over sheetrock...

Ok now that ,,, thats explained

Question 1------Will Styrofoam sheets soundproof well.
Question 2------How well will they proof,(80%-90% maybe?)

Thanks for reading guys ,,,, this board iz my only hope ... all of my knowledge that iv have of recording has come from this board............................................laterz

 

[BigKahuna]

sorry to tell you .. but, the styrofoam sheets you have will do very little soundproofing. There's just not much mass ... that's what you need to soundproof effectively ... mass and airspace.
Youd be better off doubling up the sheetrock and using resilient channels or staggered studs. Check out some of the STC ratings at this page for more ideas:
http://www.sae.edu/freeonlineuniversity/audioglossary/Pages/STC Chart.htm


Good luck!

 

[frederic]

Styrofoam is actually very reflective, acoustics wise.

If you were to shred it into little tiny pieces, such as 1/4" balls (or there abouts), then it would absorb some of the mids and lows, but it can rattle.

Studiofoam, specifically designed for acoustics would be your best bet.

Yea im trying to soundproof a portion of my basement and im going to do the ceiling first.

OK my plan (hope its right)---
First----------felt paper
Second ------R19 insolation...
Third----------Styrofoam sheets ( 7-to8-inches thick)
Fourth--------sheetrock
Last-----------Carpet over sheetrock...

Ok now that ,,, thats explained

Question 1------Will Styrofoam sheets soundproof well.
Question 2------How well will they proof,(80%-90% maybe?)

Thanks for reading guys ,,,, this board iz my only hope ... all of my knowledge that iv have of recording has come from this board............................................laterz

 

[sjoko2]

Styro...any foam, is a conductor of sound and an insulator of temperature only. One of the worse products there is for sound transmission