Acoustic Floor Rating

kojak

By kojak,
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kojak

kojak 0

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Does anyone know how to grade the acoustic rating of an acoustic floor buildup? I have been recommended the following for my flat which is in a 1930's London mansion block:

2 layers of 18mm floorgrade chipboard on

40mm mineral wool acoustic insulation of 200kg/cub m density on

concrete slab 125 or 150mm thick

In other words, what dB rating will this buildup achieve for airborne and footfall sound? The building Regs Part E require, I think, 45dB for airborne and 62dB for footfall.

Thanks very much.

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