17sq, 8/12 pitch, 1800s post & beam construction, rafters at 28", 1x12 sheathing. Barn is uninsulated.
Will rip off the old and just want to make sure I put up enough for the nails to hold the Landmarks. The roof has character (waves). I have put up 1/2" with 2" ring shanks on lower pitch several times before.
Is the 1/4" enough, or should I wrestle with the 1/2" up there. Maybe 3/8"?
Anyone know of any code issues in Massachusetts on this subject?
Thank you very much for your help.