Studio Ceilling Design

I would appreciate some feedback on two studio ceilling design, that i just can't decide wich one would be the best option. Both ceillings are angled at 15degres. The one shown in Fig.A is more or less build like a double partitions wall, exept that it would need a "port" to get the sound in, i guess, correct me if i'm wrong. It would also put the weight on the walls wich are rested on a floated floor. Fig.B is the most usual design. This design put the weight of the studio ceiling on the structure of the external buliding. Wich one would yeild the best results in terms of listening environement ? Any hints , ideas, suggestions, questions welcome. Thanks to the group.

orangenumerik, I think your a bit off target. :roll: Could you please re size pics to 600 to 700 pixels wide so every can view with out scrolling back and forth on screen. I got a 19" monitor set 1280 pixels wide and I'm still scrolling... it's in the stickies, just courtesy. :D The point of using mineral wool or frigid fiberglass hangers in a false ceiling/cloud system is to affect the acoustics with in the room. In your Fig A you have 2 layers of 5/8" drywall below the hangers. Drywalls purpose is to keep sound in the room & keep unwanted sound out... for isolating sound. Anything between the mass of existing ceiling and new decoupled ceiling is for sound dampening, no need to hang anything, just use standard fluffy fiberglass which is more cost effective than rigid fiberglass or rock-wool at a 2 db loss (or so) in isolation. Just make sure the fiberglass only touches one mass. The fiberglass counts as AIR in the Mass Air Mass thing. Your FigB makes a lot more sense, in fact Fig A is almost a pointless approach. In FigB I hope that's not drywall you have in the upper part of the suspended ceiling. For isolation in FigB you may want to add some insulation between existing ceiling and 2 layer 5/8" gypsum. You may want to add more mass (gypsum) to existing ceiling and add more air to the space... both will add sound isolation. And very important you will need to figure out the dead and live load of this existing ceiling (maybe floor to). Consider using Green Glue between drywall layers if you need more isolation and existing ceiling can't take additional dead load. I juts bought a case of Green Glue for $200 US delivered. 8) Based on the FigA drawing I would suggest you do a little more reading on this site and I personally can't recommend Rod's book enough (look in Stickies) Good luck :D Marc :twisted:

Hi guitardad72 Thanks for answering. Sorry for the huge graph i'll fix that soon, i know the guidline, i just didn't realized .Well, i realised after reading your post that some info was missing in mine ! First. I would prefer not to add weight to the existing ceiling, wich is attached to the roof structure, last winter there was three feet of snow and ice on that roof, talk about mass... and the overall structure is not what i would call prime construction design, it's OK but i won't push my luck. That is why i've come to the FigA idea. I Know that hangers are pointless in a closed spaced, but my ideas was to do a port somewhere so sound could get in. I thought it was a really usefull space to use as somekind of bass trap, but hey maybe i just don't get it. So what you are saying is to build a straight double leaf ceilling lower than the actual one,atached to the walls,filled with wool, to soundproof the room, then place a false ceiling with hangers and everything atached to that new ceilling...right. I really appreciate your feedback i hope i don't sound too much like i want to stick to my FigA idea, that's why i post here. For reference on my project you may check here http://www.johnlsayers.com/phpBB2/viewt ... highlight= Regards

orangenumerik, I remember when you posted the thread on design forum. I'm originally from Halifax NS Canada and I sure do not miss the snow :D

So what you are saying is to build a straight double leaf ceilling lower than the actual one,atached to the walls,filled with wool, to soundproof the room, then place a false ceiling with hangers and everything atached to that new ceilling...right

Basically yes. Can't tell if you've considered placing new ceiling joists bearing new inner leaf 2x4 walls. This way inner walls and ceiling would be decoupled from exterior/outer leaf walls improving isolation from room to room and from outside. Placing ceiling joists to bear ontop of walls is better than joist hangers or 2x4 bolted to existing wall. I don't know what your isolation requirments are though. Keep reading and posting. Marc