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diyguy
New member
I agree with Bryan on the drycore. I built an additional vocal booth 5x7x8 for doing vocal overdubs and I had to gut a laundry room basement. Drycore is very good for a few reasons
1. it is cheap and gets you a solid sub floor you can double float.
2. It prevents mold and alows your space to breathe if you have a pipe burst or a leaky wall dut to a flood (god forbid)
I designed a similar studio with a method that used rubber bar matting that snaps together it is softer than dry core but rigid enough to support 2X layers of 3/4 OSB or TG 1" BC ply. You can also cut it with a knife blade. lay it down 4-6 inches from all walls then two layers TB OSB siliconed together. Screw your 2x6 staggered stud walls building separated rooms on separated sections of the bar matting with two layers of osb.
If you can build 2X6 or 2x4 ceilings in each room so that nothing touches any of your existing ceiling. Vapor barrier all the concrete walls with 6 mill plastic this way the exterior walls of the isolated floating rooms that are open using unsulation will not mold up over 10-15 years causing major health issues and a complete tear down mold remediation.
I used this bar matting method on my main room and control room and it has worked flawless. The dry core I recently used for my vocal booth addition and it was ideal because I have pipes that could burst over time on the other side of the walls.
Just remember the sound will penetrate your silent rooms get knocked down from the insulation in the wall, bounce off the concrete then come back and hit the insulation so keeping that side open isulation with a gap is key.
If you want further bass killing make thin hanging traps wrapped in insulation or rock wool hanging from string or wire in the 8" cavity between the studio wall and the concrete wall. This helped me kill my low HVAC unit noise.
Also float those walls on strips of sheetblock and screw into only the second layer of osb abd that will further float the walls since the first layer is siliconed to the second no physical screws for sound to vibrate through. It is a ton of work but so worth doing once it is all done.
1. it is cheap and gets you a solid sub floor you can double float.
2. It prevents mold and alows your space to breathe if you have a pipe burst or a leaky wall dut to a flood (god forbid)
I designed a similar studio with a method that used rubber bar matting that snaps together it is softer than dry core but rigid enough to support 2X layers of 3/4 OSB or TG 1" BC ply. You can also cut it with a knife blade. lay it down 4-6 inches from all walls then two layers TB OSB siliconed together. Screw your 2x6 staggered stud walls building separated rooms on separated sections of the bar matting with two layers of osb.
If you can build 2X6 or 2x4 ceilings in each room so that nothing touches any of your existing ceiling. Vapor barrier all the concrete walls with 6 mill plastic this way the exterior walls of the isolated floating rooms that are open using unsulation will not mold up over 10-15 years causing major health issues and a complete tear down mold remediation.
I used this bar matting method on my main room and control room and it has worked flawless. The dry core I recently used for my vocal booth addition and it was ideal because I have pipes that could burst over time on the other side of the walls.
Just remember the sound will penetrate your silent rooms get knocked down from the insulation in the wall, bounce off the concrete then come back and hit the insulation so keeping that side open isulation with a gap is key.
If you want further bass killing make thin hanging traps wrapped in insulation or rock wool hanging from string or wire in the 8" cavity between the studio wall and the concrete wall. This helped me kill my low HVAC unit noise.
Also float those walls on strips of sheetblock and screw into only the second layer of osb abd that will further float the walls since the first layer is siliconed to the second no physical screws for sound to vibrate through. It is a ton of work but so worth doing once it is all done.