Spacing Hint: Use a 10d box nail to gauge 1/8-inch spacing between panels. It works as a perfect spacer to prevent improper
installation of Plywood and OSB.
Improper Panel Spacing results in buckling and costly and time consuming call backs.
It’s cheaper to prevent issues at the beginning of any process
than at the end.
There are easy ways to prevent buckling.
Source: http://www.apawood.org/buildertips/pages/M300.html