I have a 16 x24 garage with a gambrel roof and want to put in a loft. I pla n on using 2x12 for the floor joists on 16 inch in centers. In order to inc rease the headroom can I put the joist on top of shorter 2x4s nail to the existing wall studs( they would go to the bottom sill) instead of putting t hem on top of the sill. If that makes sense.
Thanks