Hi all. I am building a single room for live recording and mixing in my basement and the contractor just finished the framing. Room is 23'3" long by 13'1" wide by 7' tall aprox 500 sq ft. Two walls are a single frame on concrete, two walls are double framed so not to attach to the rest of the basement. All the walls are floating on a concrete pad. Floor is going to be finishing the concrete that's there (open to other ideas). All walls will have RC Channels and R40 insulation, double sheet rock with green glue. My concern is the ceiling and where the walls hit the floor. the ceiling will have RC Channels, double sheet rock with green glue but It was supposed to be separated from the house like the other two walls. They have nailed the frame to the upstairs floor and it is touching the beams. There is duct work and pipes running above the room. To mitigate the lack of "room inside a room" the contractor wants to put a layer of expanding foam and then R40 insulation. I am still concerned that even with the RC Channels, double sheet rock, green glue etc. this will not prevent bass and sound traveling up through the floor and into the living room. My drums can hit about 115db when playing hard. I will have acoustic treatment and bass traps in the corners. Where the the walls hit the floor there is going to be a gap that he plans on filling with R40 and an acoustic caulk.
Is the ceiling in bad shape and what can be done about where the walls touch the floor?
Thanks~
Help with contractor deviating from the plan!
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museic
- Posts: 1
- Joined: Wed Jul 19, 2017 7:36 am
- Location: Denver CO
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RyanC
- Posts: 46
- Joined: Tue May 17, 2005 4:20 pm
- Location: Denver CO
Re: Help with contractor deviating from the plan!
Channel plus insulation is not going to make up for the fact that this is not independent framing. I would make him tear that out, especially if you gave him a plan and he just *improvised*. He did it wrong, end of story.
But moving forward you might need to double check some things on your plan. For one, there is no need for RC when you have independant framing. Also it looks like the 'joists' (more like nailers the way he framed it) are running the long way of the room. To make the framing independent, you probably want the joists running across the short dimension, with them oriented upright so they can span and bear the dead load of the drywall. If they go the long way you may need to go to something bigger.
But moving forward you might need to double check some things on your plan. For one, there is no need for RC when you have independant framing. Also it looks like the 'joists' (more like nailers the way he framed it) are running the long way of the room. To make the framing independent, you probably want the joists running across the short dimension, with them oriented upright so they can span and bear the dead load of the drywall. If they go the long way you may need to go to something bigger.