Many home builders construct houses with osb for the entire roofdeck or sometimes they use cdx around the perimeter edges and osb in the center.
Osb vs cdx for roofing.
Far too often i see osb sag between the trusses making your roof look wavy.
As a roofing contractor in seattle i strongly recommend that osb is never used as a roofdeck.
I prefer osb especially when dealing with nine or ten foot walls just get 9 or 10 foot sheets.
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.
In such places it does not get in contact with a lot of moisture which prevents it from getting damaged.
What if my house currently has an osb roofdeck.
To me lateral stregnth is more important studs carry the load down to the foundation not the plywood.
One of the nice things about plywood is the variety of options you can buy.
New homes will usually see a few rainfalls before a roof is on and as.
Consider having the osb replaced with cdx when your roof is replaced.
When you count sub floors roofs and wall sheathing osb claims about 70 of the wood sheathing market in north america over plywood.
Far too often i see osb sag between the trusses making your roof look wavy.
An inspector once told me that osb is stronger laterally while cdx is stronger vertically.
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.
Although osb typically offers a higher shear rating which adds rigidity to your structure.
It is also used for roof sheathing.
Although osb typically offers a higher shear rating which adds rigidity to your structure.
Odds are that if you pass a housing development of wood framed houses it will have osb oriented strand board as exterior sheathing.
Over the years i have seen claims for plywood decking delaminating which can cause squeeks and knocks between the ply s.
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.
Although some people will ultimately choose cdx many experts argue that osb is better overall for roofing.
My personal opinion is that osb performs well on the wall and floor but stick to cdx plywood on the roof.
Osb is far less likely to expand and contract when exposed to humidity and moisture even though it will take longer to dry.
Cdx is best for sub flooring.
