Jadnashua
Retired Defense Industry Engineer xxx
FWIW, OSB has a grain to it as well...that's the reason they call it oriented strand board. A nominal 3/4" Advantech sheet has alternating direction layers (about 20 or so) of the strands, similar in idea to the sheets of ply, and in fact, is stiffer by about 10% than the equivalent thickness structural panel. So, it actually has a 'grain' and stronger direction to it, as does plywood.
One poster on here says, when it's perfect, it's good enough. THen, you bash me for pointing out it is better, and no harder to install, when you install it with the grain the 'proper' way between the joists. I also said that with all of the blocking, it probably wouldn't be noticeable, but it is measurable, if you wanted and had the right equipment.
One poster on here says, when it's perfect, it's good enough. THen, you bash me for pointing out it is better, and no harder to install, when you install it with the grain the 'proper' way between the joists. I also said that with all of the blocking, it probably wouldn't be noticeable, but it is measurable, if you wanted and had the right equipment.