Despite also being susceptible to water damage lipinskiy says that.
Osb vs plywood roof.
As osb is cheaper than plywood and has the strength and durability of plywood it is becoming more widely used than plywood.
Thankfully there are osb materials today that are designed to be moisture resistant.
Today osb has 70 75 market share and plywood has about 25 share.
This is one of the reasons why some people prefer using plywood for their roof or subfloor.
Osb is made by combining glue resin and wood chips and pressing them into the shape of a plywood sheet then baking everything together.
Compared to cdx oriented strand board osb is made very differently.
Oriented strand board osb board that soaked in my bathtub overnight swelled almost 1 4 in.
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 was introduced in the 1970s and steadily gained market share from plywood surpassing plywood in production in 2000.
When it gets wet the sheathing could swell and thicken up because of the moisture.
Plywood has better performance when it comes to overall durability.
However when it is penetrated by water it takes a very long time to finally dry out compared to cdx plywood.
Water test the edges of the 1 2 in.
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.
It is extremely resistant to moisture.
Eventually you can decide which one to use between plywood vs osb for roofing.
Alternatively osb is created from wood chips resin and adhesive that is baked and formed into the shape of a sheet of plywood.
How it s made plywood vs.
Osb these sheets of wood may look similar but they are not created the same.
Because of this manufacturing process osb is at least half the cost of cdx plywood.
However osb is a lot cheaper and more affordable to buy.
It becomes soft and weak when it delaminates.
Both of them are great for roofing.
At the end it will be your consideration to choose between performance and cost.
Osb boasts a more consistent density.
New homes will usually see a few rainfalls before a roof is on and as noted above osb doesn t handle moisture well.
A few other downsides to plywood.
Plywood is created by taking extremely thin sheets of wood called plies and gluing them together.
The thickness of the plywood can be controlled by the number of plies glued together.
And stayed swollen while the plywood remained stable.
The curb appeal of your home is lost because soon your shingles will start to misalign creating an eyesore on the top of your home.
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.
