Osb Vs Cdx Roof

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 vs cdx roof.

Oriented strand board osb combines wood chips glue and resin into the shape of a sheet of plywood and bakes them together. When you count sub floors roofs and wall sheathing osb claims about 70 of the wood sheathing market in north america over plywood. How do cdx and osb differ in performance. Odds are that if you pass a housing development of wood framed houses it will have osb oriented strand board as exterior sheathing.

My personal opinion is that osb performs well on the wall and floor but stick to cdx plywood on the roof. Osb is a cheap imitation of cdx. In such places it does not get in contact with a lot of moisture which prevents it from getting damaged. It is also used for roof sheathing.

Cdx is best for sub flooring. It is often less expensive than cdx plywood because this manufacturing process doesn t require the same costly veneers found on the front and back of cdx plywood. Cdx and osb are used for almost similar things but because they have different features one is better applied in some tasks and the other one on other tasks. The roof deck is the surface underneath your roof and roofing underlayment.

Osb does not do well when it gets wet. Compared to cdx oriented strand board osb is made very differently. Far too often i see osb sag between the trusses making your roof look wavy. Far too often i see osb sag between the trusses making your roof look wavy.

It is made of wood chips and glue. Cdx plywood is a construction grade type of plywood that is designed for exposure to the elements. It is made of multiple layers of thinly cut solid sheets of wood that are pressed together. Because of this manufacturing process osb is at least half the cost of cdx plywood.

Most construction sites will consider the use of either osb or plywood for the roof. Each of these materials has its own unique properties and qualities and so each is used in specific applications. Although osb typically offers a higher shear rating which adds rigidity to your structure. Although osb typically offers a higher shear rating which adds rigidity to your structure.

New homes will usually see a few rainfalls before a roof is on and as. It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements. It is usually made of 4 by 8 sheets that should be 1 2 thick. My personal opinion is that osb performs well on the wall and floor but stick to cdx plywood on the roof.

Over the years i have seen claims for plywood decking delaminating which can cause squeeks and knocks between the ply s.