Insulation Attic With Floor

jaymay75

I'm adding an addition and want to insulate my my attic with R-38, but I also would like a floor up there to store junk. Will I be forced to use 2x12's for the joists, or is there another cheaper way to go? What if I used 2x8's or 2x10's and furred out the floor to the 12" depth?
Thanks

Jason

reveivl

What's the span of the joists? This will dictate the size of member necessary for strength, then you can add insulation as you choose.

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