Wood and organic materials
Which is better, OSB or Plywood for Roofs, Walls & Floors?
...OSB as an air and vapour barrier on the inside of walls - see here
Plywood is better than OSB for subfloors:
Despite its common use as such, we don't recommend using OSB for subfloors, but that's really just for aesthetic reasons. New homes will usually see a few rainfalls before a roof is on, and as noted above, OSB d...