Furring out rafters
I have 2×10 rafters(9.25″) and an 1.5″ air gap for .5″ foam vent baffle.
So im left with 7.25″ of rafter bay. I need 11″ for my double r23 roxul batts. My plan is to use a .5″ foam board strips cut to 1.5″ wide and then attach a 2×4 with pocket screws. This would give me the 3.75″ needed for batts. Is this plan reasonable or would using plywood gussets be an easier way of furring out the rafters? The foam strip is primarily a thermal break and to get the extra .25″ needed for my batt install. Any creative ideas or other methods anyone ever use? My roof is a very simple gable with a 5/12 pitch.
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