Fastening schedule for roof decking


#1

Is there an ICC fastening schedule for 1/2 plywood decking on residential roofs when the roof previously had a cedar roof on skip-sheathing with nominal 1x4 lath set at 7.5" centers, assuming the decking is going to be put on top of the existing lath?


#2

6 inches on center, nailed through the trusses only.
Set your plywood/osb where the bottem and top edges fall on an existing 1x.


#3

Bring a few bundles of 1x3 to install where the sheets break on a gap