Wood and organic materials
Which is better, OSB or plywood for roofs, walls & floors?
...plywood is more vapour permeable than OSB.
Plywood will absorb moisture quicker than OSB, but consequently it will also dry quicker. Both products will swell when wet, but plywood will return to almost its exact shape when it dries. OSB is less forgiving of being left out in the rain and will show more deformities afte...
