garage fit-out - floating metal frame?

[NYMo]

Hi Brett,

Just looking at your studio build.

I think those garage doors are going to be a problem...they really don't stop much !

Cheers
N
Y
M
O

[qiktune]

Hey NYMo, that was exactly what I thought but studying what others have done on the Sayers site and what John himself suggests my plan is as follows.

The door at the front of the house which is to be sealed permanently will have a metal stud frame built as close as possible to it and then the cavity sealed and stuffed with rockwool/insulation...thus creating leaf one. the interior wall of the CR will form the second leaf. As per what I've read, if I were to gyprock the outer face of leaf 1 I would then in fact be creating a 3 leaf wall because as thin as that garage door is it still acts as a leaf. There's a hell of a lot of info on this at Sayers site...I'm hoping it's not ALL misinformation... :-(

The garage door next to it is basically just an entry/exit so will not have any bearing on the studio.

The rear garage door will be removed and a new wall built in it's place so that one's not really an issue. We're just waiting for the last minute before closing that off as obviously working space inside the build area is at a premium and we need access to the patio/storage area for the time being.

But please, pick apart any issues you find and discuss...I'm all ears and grateful

[rob]

you should hear Hebel blocks ringing!

[mfdu]

wow guys i'm feeling the love.

but i'm being dodgied off the metal frame. i mean, if you had one, you don't want it back. i hear ya.

13th - that stuff i saw stacked up at your place is the shit. that's what i'm going with. i forgot all about it.
building certificate for wood frame, rockwool between the studs, easyboard over the top and i'll moon walk outta here!

but yeah mate - my little fella and i need to come and see your new digs before all the 'pretty' gets laid on. i want to see the guts!
after all, our garage is for music, but also for finn. i mean, best naughty room in spotswood - SOUNDPROOF!!!!!!!!!!

(and i hope i get to recap at least one of your purdy modules. it'd be nice to contribute to the overall creation. [?])

[rick]

i have had a hebel room once , i wont let anybody i know do it again unless they fill each block with sand
which kinda defeats the purpose , of easy light quick etc etc .

[heathen]

i have had a hebel room once , i wont let anybody i know do it again unless they fill each block with sand
which kinda defeats the purpose , of easy light quick etc etc .

I've only seen solid ones. Why not use them, would'nt they work? I'm not using hebel btw.

[rick]

they sing ... at a set frequency which is what you dont want , thus the need for sand

[heathen]

Pity, as they are easy to use.

[mfdu]

so to sum it all up.

singing. good if you're a singer. bad if you're a wall construction technique.

[Mickstape]

i have had a hebel room once , i wont let anybody i know do it again unless they fill each block with sand
which kinda defeats the purpose , of easy light quick etc etc .

rick wrote:
i have had a hebel room once , i wont let anybody i know do it again unless they fill each block with sand
which kinda defeats the purpose , of easy light quick etc etc .


I've only seen solid ones. Why not use them, would'nt they work? I'm not using hebel btw.

Yeah i was referring to the solid panels also Rick.

As for Rob's comment

you should hear Hebel blocks ringing!

are you referring to the metal strip that the hebel block is fixed to ringing or the actual hebel itself? Could you provide a freq range in regards to the "ringing". I was given "advice" from a builder friend of mine who thinks that combining hebel with an extra absorptive layer fixed to the internal side will provide great reduction as well as providing a more natural sounding space. Could you care to clarify this for me please Rick and Rob. Just asking because i've practically got my budget down to the screws and fittings now so i need to consider another contingency if hebel is not in fact the way for me to go.

[rick]

my advice is dont go hebel unless you want to !

or make sure you fill them all with sand .
the main issue is the damn things are so uniform that they resonate all at the same frequency which of course would depend on the size room
but in the room i had them used in had a shitty 400htz ring to it that i could never get rid of it was the resonant freq of the room with my hebal walls you could just "tap the walls anywhere and hear it !.

what you want to do is mixup the thickness and or materials of the the structure so it doesnt end up with a "resonate"note or a "hole" for that matter
which is why you use different thicknesses of gyprock or glass or whatever

or fill em with sand .. job done

[rob]

ok...first up i'm not an acoustician, so my comments could well be worthless.
However i've been in a room with Hebel walls and it sounded very ringy. It seems instructive to tap a hebel block with a drum stick...it has a "note" that is pitched quite high...compared to say a block of wood.

But I could be talking out my arse.

I would also seem that given it's affordability and ease to work with, if it was a great acoustic material, everyone would be using it. Are they?