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Treating Floor in New Construction - Reducing Footfall and Vibration

Looking for some good ideas/solutions to treating my new dedicated music room's floor.  The room will be fairly large at 22w x 29L, built on the main floor of the new house with a basement below.  My current room is in my basement with concrete floors so footfall is never an issue.

I have asked the engineering firm to give me some recommendations on making the floor stronger structure wise; not sure what they will suggest, maybe floor joist on more narrow centers, say 12 inch vs 16.  

Have you tackled this issue?  What about mass loaded vinyl (MLV); would a layer of heavy vinyl between the OSB floor boards and carpet pad help?  Use two layers of OSB flooring and glue them together?  Ideas?

stickman451
stickman451 OP
553 posts
 
I am thinking floor joists on 12" centers are a idefinite requirement.   I am not sure what the building code requires but since the room is fairly large at 22' x 29', 12" centers would seem reasonable.

I don't care for the OSB subflooring myself, so I will discuss with my builder the possibillity of using good quality 3/4 plywood.  Gluing the subfloor sounds reasonable also.  
oldears
386 posts
 
I followed a recomendation to create a floating sub-floor with a layer of roofing felt over the normal plywood floor, then with a layer of 3/4 plywood screwed into the flooring  (not the joists). I then used a quality pad with Berber carpet..
dweller's avatar
dweller
3,868 posts
 

A person I knew had a giant listening room (30 X 30) over his garage.

This room has NO BASS! We speculated that the plywood flooring was soaking it up. I'd go with heavy ceramic tile flooring to keep the bass in the room.

elevick
2,638 posts
 
Joists 16" on center is the industry standard.  Usually you will get 5/8 plywood on top.  1 inch tongue and groove plywood all glued and screwed will be as Williewonka said "concrete".  You shouldn't need more joists.  The plywood is a cheaper and easier option.
rja's avatar
rja
2,385 posts
 
Glue and screw 5/8 plywood on the bottom of every other pair of floor joists. Turns them into box beams.
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