Do I need to use full sheets of plywood for roof?

[Lulu-vt]

The rain is coming soon (tail end of Debby) and I’d love to get my roof on. Do I need to use full sheets of plywood to go under the metal roof?
I’m pretty sure I can’t manage to roof by myself with full sheets of plywood. It would be much easier to cut it up into pieces - at least half a sheet and then nail down. Since I’m going to have metal over it, does it make a difference?
I’m also trying to cut it the most financially efficient way by using all pieces. My roof is 68” down each side and 12 ft long + about 18” together for the eve overhang on each end.

 

[2ndTink]

The roof on my metal roofed coop just has the metal screwed to slats, so no full plywood roof under the metal, so I think it would be fine to cut those pieces in half, just have them end where they are supported by a truss for some strength.

 

[Ted Brown]

Metal roofs can condensate during the cold months and drip moisture inside the coop.

At a minimum you should use a membrane over the strapping and under the tin; most moisture will run down the membrane and outside.

 

[aart]

The roof on my metal roofed coop just has the metal screwed to slats, so no full plywood roof under the metal, so I think it would be fine to cut those pieces in half, just have them end where they are supported by a truss for some strength.

But @2ndTink do you live in a cold climate?

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