Both osb and plywood absolutely hate water lipinskiy mentions going on to say that the most important part regardless of which decking option you choose is that all penetration points on a roof are sealed.
Osb roofing deck.
Oriented strand board isn t plywood nor is it a type of particleboard fiberboard or wafer board and although it is a newcomer to a plywood.
While osb oriented strand board is generally cheaper than plywood it is heavier and not as stiff as plywood and can result in soft squeaky floors under weight the biggest complaint against osb is that it doesn t handle moisture very well so it is more suited for indoor use.
It s simply the lesser of two evils according to lipinskiy.
Osb is widely used as roof decking material.
For pricing and availability.
A homeowner recently wrote and asked me the following regarding osb roof decking.
Osb sheathing 15 32 cat ps2 10 osb sheathing application as 4 x 8.
Moisture also affects the strength of plywood.
Provides exceptional dimensional stability and stiffness.
Can oriented strand board osb be used for roofing.
So while exterior glued plywood can be used outdoors it works best.
7 16 cat osb sheathing application as 2 x 4.
Oriented strand board 660663 the home depot.
Oriented strand board commonly referred to as osb is a type of engineered lumber similar to particle board formed by adding adhesives and then compressing layers of wood strands.