Lipinskiy says that both plywood and osb are sufficient but that he does prefer osb.
Osb vs plywood for roofing.
While a sheet of plywood might be 5 to 7 plies thick a sheet of osb is made from as many as 50 strand layers packed and compressed into the same thickness.
Compared to cdx oriented strand board osb is made very differently.
You won t have to worry about the material expanding anytime soon like when you use osb.
Osb is made by combining glue resin and wood chips and pressing them into the shape of a plywood sheet then baking everything together.
Osb panels can be manufactured in lengths up to 16 feet or sometimes even higher while plywood is generally limited to 8 to 10 feet.
Performance over a long period of time.
Plywood is better than osb for subfloors.
You can consider this as an advantage but it can also have some drawbacks.
Despite its common use as such we don t recommend using osb for subfloors but that s really just for aesthetic reasons.
Both plywood and osb will meet the code.
This is why plywood is considered as the better option for roofing.
There is nothing wrong with plywood but for me personally we always go with the osb he says.
The reason is very very simple.
As a homeowner if you find yourself in this position know that when you install a new decking system you will have to decide between using plywood or osb.
Plywood is the ideal material for places having a wet weather condition.
New homes will usually see a few rainfalls before a roof is on and as noted above osb doesn t handle moisture well.
Screwe holding ability is a critical matter in roofing.
Osb boasts a more consistent density.
Osb vs plywood screw holding.
When the roofing material cannot hold nails and screws properly of course they cannot hold its shape very well.