Osb Vs Plywood Roof

At the end it will be your consideration to choose between performance and cost.

Osb vs plywood roof.

Osb was introduced in the 1970s and steadily gained market share from plywood surpassing plywood in production in 2000. Today osb has 70 75 market share and plywood has about 25 share. When it gets wet the sheathing could swell and thicken up because of the moisture. Because of this manufacturing process osb is at least half the cost of cdx plywood.

Plywood has better performance when it comes to overall durability. 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. However when it is penetrated by water it takes a very long time to finally dry out compared to cdx plywood. It is extremely resistant to moisture.

Oriented strand board osb board that soaked in my bathtub overnight swelled almost 1 4 in. Despite also being susceptible to water damage lipinskiy says that. Osb is made by combining glue resin and wood chips and pressing them into the shape of a plywood sheet then baking everything together. Eventually you can decide which one to use between plywood vs osb for roofing.

However osb is a lot cheaper and more affordable to buy. Water test the edges of the 1 2 in. The thickness of the plywood can be controlled by the number of plies glued together. How it s made plywood vs.

Osb boasts a more consistent density. Unfortunately an osb is less resistant to water compared to plywood. Plywood is better than osb for subfloors. Thankfully there are osb materials today that are designed to be moisture resistant.

A few other downsides to plywood. Both of them are great for roofing. As osb is cheaper than plywood and has the strength and durability of plywood it is becoming more widely used than plywood. Despite its common use as such we don t recommend using osb for subfloors but that s really just for aesthetic reasons.

Compared to cdx oriented strand board osb is made very differently. 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. Alternatively osb is created from wood chips resin and adhesive that is baked and formed into the shape of a sheet of plywood. 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.

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. Osb these sheets of wood may look similar but they are not created the same. This is one of the reasons why some people prefer using plywood for their roof or subfloor. It becomes soft and weak when it delaminates.