Sheathing

roof 0 Comments March 8, 2017June 20, 2017 Uncategorized

Sheathing is a term used for boards or panels used on floor, wall or roof assemblies. For roof sheathing, CDX plywood and OSB (Oriented Strand Board) are the ideal materials. OSB typically offers a higher shear rating and OSB usually has a lower price point. CDX Plywood is lighter and is more durable, especially if in contact with large amounts of moisture over extended time periods. CDX Plywood is also stiffer and does not sag which OSB has a tendency to do.

Generally, CDX plywood is perceived as a better quality product and it usually costs about $3.00 more a sheet than OSB. What do the letters CDX mean? They are a grading system of plywood. And C and D are economical grades, and X stands for exterior glue.