BarrierBoard???

Hey guys, I'm in the midst of designing a building that contains 4 Rehearsal rooms a large studio and a small office. I've been researching around for what will be the cheapest solution to make sure that no sound leaks from the rehearsal rooms into the studio. I was looking at double studing with two layers of 16mm plasterboard with green glue in between. But i was wonder how a single layer of barrierboard in it's place will compare? Cheers Chris P.S the floors will be floating and the walls from the rehearsal rooms are about 4 metres away from the recording studio walls.

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I was looking at double studing with two layers of 16mm plasterboard with green glue in between. But i was wonder how a single layer of barrierboard in it's place will compare?

How much does "barrierboard" cost per unit of mass? How does it compare in density? Those are the basic questions. If it is less dense than plasterboard (kg/m3), then forget it. If it is more expensive per unit of mass, then forget it. If it is both considerably cheaper AND considerably denser, then it might be worth looking at. But I doubt it will be both. Also, what technical reference papers and independent acoustic lab tests are there on "barrierboard"? Plasterboard is a known, tried, and proven method of sound isolation, with stacks of technical literature and laboratory tests, going back dozens of years or more. Can you say the same for barrierboard? Plasterboard is a well studied, known quantity: it works. And "barrierboard"? Who knows...

the floors will be floating

Are you sure you want to do that? Did you read this thread carefully: viewtopic.php?f=2&t=8173

Hey Mate, That's kind of what i was getting at. Has anyone had any experience with Barrierboard (i know it's only in Australia). It's very new and was wondering if anyone has tried it. Cheers'