CDX is a low or average grade exterior plywood material: The letters C and D represent the grade quality of the wood on both the front and back sides, and the X represents that it is an exterior grade wood suitable for outdoor purposes and resistant to water damage as the glues invloved in making the plywood will not be adversly impacted my exposure to water.
What is EXT Plywood?
EXT Plywood is Simply Exterior Plywood Grades.
Exterior Plywood (EXT) is intended for use in projects with no structural requirements, exterior applications where a high quality finish is required. A bonded exterior plywood must be used for applications involving long term full exposure. All A bonded, exterior plywood should be treated against fungal attack and should be surface finished to minimize surface checking
Equipment shown here is used for discontinuously making Sandwich panels with the facing layer (s) of color steel or galvanized sheet and the core material of polyurethane. Whole equipment is divided into PU insulation part and facing sheet profiling part.
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