716 Osb Menardspitpoint - บรษท โทปาส บ เค เค จา กดtimeline Groups Generally if existing sheathing is sheets (ply or osb) we remove and replace. For plank decking we go over with a thinner sheet deck (3/8ply or 7/16 osb). If it's a sheet deck and really. 7/16 osb is generally rated for spans up to 24 inches on center for roof sheathing. This means it can support standard loads over this distance without excessive deflection.
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