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-   -   What size plywood should be used for a carport roof with shingles? (

twilightcall 01-19-2008 11:32 AM

What size plywood should be used for a carport roof with shingles?
The roof over the carport is in not good shape. It has shingles. What is the correct size to use and that will last. Thanks.

skymaster 01-19-2008 11:39 AM

1/2" minimum. depending where you live if it is down south and very humid I would use 1/2 pt

USP45 01-19-2008 11:40 AM

depends. If it were my house, 5/8. But I have used 3/4 toungue and groove also, though its a bit heavy. 7/16 is min I think. IMO, use 5/8.

twilightcall 01-19-2008 11:47 AM

Thanks guys. I am down south. It is humid. Southern TN. The house was built in the 40s. Thanks Again.

Ed the Roofer 01-19-2008 01:52 PM

1/2" is probably the "Minimum" code where you are at, but 5/8" or 3/4" would not cost that much more and would be a better deck.


justdon 01-19-2008 01:56 PM

what is your rafter spacing the plywood is nailed on?? Whats on there NOW and hows it feel and look? If you feel like your gonna fall thru walking on it,,better go heavier than current. 1/2 on 16's is marginal 1/2 on 24's are NO good. think 5/8 or 3/4 would be MUCH better. What slope?? ANY snow load??

the roofing god 01-19-2008 02:17 PM

justdon is right ,code is according to rafter spacing,1/2"for 16" on center,3/4" for 24" on center

so-elitecrete 01-20-2008 03:11 PM

always trust,,,
a roofing gawd & his angel, justdon

the roofing god 01-22-2008 12:49 PM


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