Degrade Plywood Degrade plywood is an economical alternative where structural requirements are not necessary. Degrade panels are a “downfall” product from the manufacture of #1 sheathing and have defects in them that preclude them from being graded as structural sheathing under CSA standards 0121 or 0151. These defects may include: sheets off-square, out of thickness, missing edge veneer on one …
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