CDX plywood is poor term to use. The CD is term to describe the finish grade of the outer plies of the sheathing. The proper term is rated sheathin...

As Lutfi notes, "CDX" is somewhat of a colloquialism; however, it is generally accepted that when you use the term "CDX" you are not referring to r...

The CD plywood is on an existing roof. Florida buidling Code requires the diaphragm to be evalueted when changes are made.

Don't know how old your building is, or what code it fell under at the time of design and construction, but the UBC's of old do list diaphragm valu...

Go to the APA Website and download the Plywood Design Specification. It explains the stress levels PS-1, PS-2 and PS-3.

Thanks everyone for your help!

CDX is available in Structural 1 - it will be stamped on the panel. Also, if my memory serves me correctly I believe the "X" stands for Exposure 1...

The "X" stands for exterior glue, I believe. CDX panels are not rated for exterior use. The APA specification does not allow below C veneer grade f...

CDX is meant for "some" minor wetting during construction (try that with OSB - NOT) or high humidity areas. Like suggested - go to APAWOOD and find...