Osb Vs Cdx Roof

Cdx is best for sub flooring.

Osb vs cdx roof.

It is made of wood chips and glue. It is usually made of 4 by 8 sheets that should be 1 2 thick. 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. New homes will usually see a few rainfalls before a roof is on and as.

In such places it does not get in contact with a lot of moisture which prevents it from getting damaged. We have used osb for some time now we use 5 8 on the roof 7 16 on the sidewalls all with plywood clips for strength and proper exspansion gaps however 3 4 t g ulc or cdx for floors stands up to the weather while building. Osb is made by combining glue resin and wood chips and pressing them into the shape of a plywood sheet then baking everything together. The roof deck is the surface underneath your roof and roofing underlayment.

Over the years i have seen claims for plywood decking delaminating which can cause squeeks and knocks between the ply s. Compared to cdx oriented strand board osb is made very differently. My personal opinion is that osb performs well on the wall and floor but stick to cdx plywood on the roof. Oriented strand board osb combines wood chips glue and resin into the shape of a sheet of plywood and bakes them together.

Osb is a cheap imitation of cdx. Although osb typically offers a higher shear rating which adds rigidity to your structure. Cdx is veneer plywood. It is also used for roof sheathing.

Because of this manufacturing process osb is at least half the cost of cdx plywood. How do cdx and osb differ in performance. It is made of multiple layers of thinly cut solid sheets of wood that are pressed together. My personal opinion is that osb performs well on the wall and floor but stick to cdx plywood on the roof.

Most construction sites will consider the use of either osb or plywood for the roof. Far too often i see osb sag between the trusses making your roof look wavy. Odds are that if you pass a housing development of wood framed houses it will have osb oriented strand board as exterior sheathing. Far too often i see osb sag between the trusses making your roof look wavy.

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. It can withstand moisture for a brief period of time but may become warped and delaminated with consistent exposure to the elements. Each of these materials has its own unique properties and qualities and so each is used in specific applications. Osd plywood osd and cdx plywood are both commonly found on construction sites because builders and contractors rely on both types of plywood to get the job done.

Osb does not do well when it gets wet.