Adding depth to rafters

BibimusJuly 7, 2013

I have an old garage that is being converted into living space. The second floor has 2X6 rafters 24" on center 16 ' long with a 10 12 pitch. The building inspector stated I have to build them out because of insulation requirements. I thought about butting up to the 2X6's a 2x12 or using Sampson strongtie RC1.56 Ripper Clip or using plywood gussets and adding a 2X10 on top of the 2x6. By adding on top the depth would be greater then the 2x12 but much more work. Any opinions or has anyone done something different?

Thnaks

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snoonyb

Were it I, I would add as little weight as possible by suspending a 2x2 or 2x4 from 3 cleats made of plywood over the length of the rafter.

    Bookmark   July 7, 2013 at 9:16PM
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akamainegrower

What R-value does the relevant code require? This information would determine how much depth (if any) you'd need to add to the rafters using the highest R value insulation - probably closed cell foam - you can find.

    Bookmark   July 8, 2013 at 5:42AM
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