Ido once sent me polystyreen sold over there for floating floors and indeed it was polystyreen (I'M NOT A CHEMIST) or looked 99.5 % like it but felt as an elastic spring.
Brian Dayton wrote:Ido once sent me polystyreen sold over there for floating floors and indeed it was polystyreen (I'M NOT A CHEMIST) or looked 99.5 % like it but felt as an elastic spring.
i've never seen anything quite like that.
Eric.Desart wrote:Nuuk,
If insulation is not the main issue, then indeed see it as a given and just continue as planned.
Otherwise do insulation measurements and check if the current situation is acceptable.
It's better to know now than after the whole studio is finished.
In function of priorities and what's important or not, you're the only one who can decide that.
If it is polystyreen most likely it's the standard expanded thermal type commonly known (there are different common densities but even the lowest is too rigid), which indeed is much too stiff for good acoustic floating floor applications. In that case indeed adding mass to the top floor won't help you (shifting problem a minor bit).
Eric.Desart wrote:Brian Dayton wrote:Ido once sent me polystyreen sold over there for floating floors and indeed it was polystyreen (I'M NOT A CHEMIST) or looked 99.5 % like it but felt as an elastic spring.
i've never seen anything quite like that.
I never did either, that's why the material surpriced me and I asked Ido to send a sample.
For me it looked about as expanded polystyreen, but didn't feel like it.
And I know lots about the looks and feel (not chemics) of most common insulation materials.
(I worked for the acoustics division of an international industrial insulation company with in their top > 4000 employees, and for a certain resin type own production)
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