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Old 02-17-2012, 11:12 AM   #1
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12 foot roof span


I am installing a metal roof. Will a 2 x 8 rafter hold with out saggi9ng


Last edited by BertLowry; 02-17-2012 at 11:21 AM.
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Old 02-17-2012, 11:34 AM   #2
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12 foot roof span


Probably not if you are in a heavy snow area. What spacing?

That is why the site registration asks for a location to get more accurate answers to your questions.

Dick

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Old 02-17-2012, 09:43 PM   #3
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12 foot roof span


One rafter every 4' OC should handle most situations.

You can always add more down the road as the situation warrants.

Green construction is the way to go.
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Old 02-17-2012, 09:53 PM   #4
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12 foot roof span


Without knowing the roofing system, is that called a "patch job"? Iowa does get some heavy wet snows especially for joists on an unknown slope.

Dick
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Old 02-18-2012, 09:31 AM   #5
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12 foot roof span


I would of recommended 8' span if I thought that would give something to put the sheathing on.

Did you not see the icon ?

In fact, 2x6's are generally used 24" OC to span 12' on garages. We'll see what he ends up with. When I have looked into metal roofs for residential apps (never done), it is always recommended to just put them on a normal sheathed roof, which I thought would defeat the purpose of the low cost metal.

He'll end up with some purlins.

Probably not many pole barn builders on the diy site.
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