SoWhat wrote:Source of the postIf only you could 3D-print these...
How amazing would that be!
as I would not want a recording to be disturbed by an audible alarm going off
endorka wrote:Source of the post
The Soundbloc boards cost twice as much as normal 12.5mm ones, and are therefore not usually cost effective. You'd get more mass for the same money from doubling up the normal boards.
In this case they made sense though. IR761 demonstrates a significant benefit of two layers of 15mm versus two layers of 12.5mm plasterboard.
Normal 15mm is 10 kg/m2, so two layers is 20 kg/m2
The room 2 -> landing wall I'll be applying some of these too has an existing layer of 12.5mm plasterboard. So we'll get a little bit more than the above;
Two layers of normal would have given more mass, but been overkill (particularly as I'll have green glue between layers) and meant double the labour to fit.
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