John Sayers' Recording Studio Design Forum Archive

Posted: **Tue Mar 29, 2005 9:00 pm**

I call to a rubber company in Spain and they advice me SBR(recicled rubber) insted of EPDM ...

What about this advice??

Posted: **Wed Mar 30, 2005 2:40 pm**

Not if you want it to last more than 5-10 years... Steve

Posted: **Wed Mar 30, 2005 10:14 pm**

But if this is for rehearsal rooms... this rooms are not frecuented like a studio room. And I think I stay in this place 10 years at the most.
So SBR is a good material if durometer is aprox 60??
SBR is much cheaper than EPDM in spain.

Posted: **Wed Mar 30, 2005 11:07 pm**

I couldn't find anything on "SDR", but it may not even be neoprene, much less EPDM - I can't recommend doing this, because I don't know what the results will be.

If you're more interested in saving money than having things last a long time, and YOU are willing to take the chance that they will quit working before you're ready to abandon them, then I can't stop you. But I won't recommend that plan because I don't want you telling me later that my advice didn't work... Steve

Posted: **Thu Mar 31, 2005 6:18 am**

Sorry, I didn't hear the name correctly. The name of this reclyced rubber is SBR instead of SDR. - Styrene Butadiene Rubber -

http://www.gerbertltd.com/rubber_flooring/ecopave

Posted: **Thu Mar 31, 2005 9:37 am**

Hey, steve... how about this product? I´m able to find it here in Argentina... i think it´s ok... (my gypsum room is just like the one John design for the SAE site)...
What do you say?
Thanks!
http://209.200.80.33/html/SUBMITTALS/NE ... SuperW.pdf

Posted: **Thu Mar 31, 2005 9:09 pm**

Hugo, still not finding enough info on the SBR to be sure; it sounds like the stuff may be less durable than neoprene, but I'm not sure.

Julian, those should work fine; all my other info on neoprene says 10 years life, but Mason industries claims life expectancy of their neoprene bridge support material of 50 years, and nowhere on their site is EPDM even mentioned. The PDF you linked to even graphs loading for you... Steve

Posted: **Thu Mar 31, 2005 11:12 pm**

I tell the company to send me a piece of this material for seeing and touching but I don't know what to do with it to check it.

Posted: **Thu Mar 31, 2005 11:24 pm**

Steve,

SBR is a high quality rubber used to manufacture tires (among other things) - SBR itself is not a recycled product - however - the link Hugo provide is for a flooring manufactured from recycled SBR tires...........

Hugo,

If the product you are planing on using is what you linked to - I could not reccomend using pieces of flooring tiles stacked upon one another to build an isolated deck on.

Besides the fact that you are using a material that has already been subjected to stress - and then recycled - I have serious concerns about the long term stability of a stack of rubber to maintain deck support.

Sincerely,

Rod

Posted: **Fri Apr 01, 2005 8:37 am**

Thanks Rod and Steve for advicing,

I have one question of EPDM rubber. If Hardness is: shore 50% +5, is so enough for floating floors??

Posted: **Fri Apr 01, 2005 11:13 am**

Yes, but you'll need to change spacing to compensate for the lower support - 50 duro stuff will support about 40 pounds per square inch of contact surface, while 60 duro stuff will support about 55 pounds per square inch; both figures are for 10% deflection... Steve

Rod, found part of that info and it didn't change my mind either; I still don't recommend it...

John Sayers' Recording Studio Design Forum Archive

SBR rubber insted of EPDM??? (correction)

SBR rubber insted of EPDM??? (correction)