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Old 04-15-2011, 10:06 AM   #1
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roof design/strength


I'm building a shed roof. It's 6'x8' and has 2x4s for rafters one foot on center. I plan on covering it with osb, #30 felt, and roll roofing. It slants in one direction, it's one foot lower in the back than in the front-(has one foot drop for 6 foot run/length)

Safe?
advice?

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Old 04-15-2011, 10:12 AM   #2
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roof design/strength


1 foot is almost flat
All your trim details will be very awkward cuts.
Get it up to a 30 angle and you can get better drainage, easier angles to figure out.
Just my 2

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Old 04-15-2011, 02:20 PM   #3
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roof design/strength


6 or 8 feet is a long stretch for 2X4 rafters. Cutting any birdsmouth out will make them even weaker.
Any snow load in your area?
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Old 04-15-2011, 02:52 PM   #4
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roof design/strength


yes to snow-eastern pa. they are 12" on center and cover a 6' span.
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Old 04-15-2011, 04:50 PM   #5
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roof design/strength


I'd increase the pitch and use 2x6's.
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