building my stage and screen wall right now. should i screw my stage to the subfloor?? it is upstairs and i will be using insulation inside. the stage will be a rear section that will not touch the walls with a front section of stage that will have the screenwall attached to it. the subs and speakers will sit on the rear section. my question is should i screw this rear section to the floor?? the floor is not perfectly level and with no sand i would think that it would need to be fastened to the floor.
thanks for any help
chris

after doing more reading i might try two layers of 30lb roofing felt??? i also have carpet pad what about all three??
thanks again

anyone??