So there I was in the back yard looking at my poor old ice fishing house and it hit me...the insulation I used in there was plain old ordinary styrofoam. Menards sells the stuff for much cheaper than the pink stuff (about 1/3 the price for a 4x8 sheet IIRC) which is why I used it then. I know the R-value is lower, but I'm not worried about heat coming or going so much as interior noise supression so I was thinking this might be a viable option. My only concerns are that it doesn't score and break as well as the pink stuff and that it doesn't have much of any structural value.
To combat this I figure I could just run 12 inch centers for the furring strips as those are cheap anyway. As for the cutting....well I guess I'll just have to use my straight edge and my Ruko knife or something. It will all be coverd anyway.
I was thinking about how I'm going to attach my furring strips. I know a lot of guys have just used screws like Wayne did with the plywood when they built my bus in the first place. I figure I'll do the same thing, but to reduce the number of holes I'm putting in my floor I think I might use screws sparingly and instead use lots of liquid nails. I also think I will attach the plywood in the same method with just perimeter screws to keep it from warping while the liquid nails drys. This seems like the most squeak-proof and easiest method.
Any input on these ideas? I love hearing about other people's successes and failures before I venture off on my own in anything