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concrete slurry ceiling insulation?

2K views 6 replies 3 participants last post by  Gary in WA 
#1 ·
Hi,
I desperately need some advice on a shed/music space currently going up in the backyard...The structure is made of weatherboard and plasterboard/drywall panels with a thin inner layer of polystyrene covered in a polystyrene bead and concrete slurry mix as a type of insulation. The reason for the slurry is its soundproofing capabilities.
The ceiling of this 3x3 metre space is made up of 6 panels; each 1 by 1.5 mtres long. Each of these has an extra joist down its centre. In addition, a beam runs along the length of the space, supporting each of these ceiling panels. My worry is each of these panels is also filled with a concrete slurry/poly bead mix-the weight is aprox 11k per square metre. Is this too heavy?
Has anyone ever heard of this kind of insulation for a ceiling? My understanding is that rockwool is around 6 k per square metre in weight.
Any help would be greatly appreciated..
 
#4 ·
"Join Date: Apr 2010 Location: Melbourne, Australia
Posts: 2"

You keep doing that, Dave, lol. I'm not familiar with that construction, ask your local building department. Or go to a sound control forum? Doesn't the contractor know? Is the slurry on a wire lath?

Be safe, Gary
 
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#6 ·
Thanks

Thanks for the reply Gary. The cement isn't on a wire lathe and unfortunately theres no contractor as it's a small backyard job being built by a friend.
I know it's an unusual insulation material for the ceiling..think I'll call the drywall manufacturer to find out what the max recommended load is..
Thanks again
Halina
 
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