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 …

Fire-retardant treated plywood is used where the Ontario Building code requires this type of plywood as part of a rated assembly for fire separation in construction.   sheathing grade plywood treated with Dricon® fire retardant. Dricon® is the recognized leader in fire-retardant protection and has been specified by architects and engineers for decades. The Dricon® process utilizes hygroscopic salt compounds which …

Pressure-Treated Plywood pressure-treated plywood for use in areas where plywood will be exposed to direct weather or moisture. Typical applications include sidewall sheathing and built-up roof decks. Our pressure-treated plywood is all sheathing-grade (CCX), either Douglas fir or CSP, conforming to CSA plywood standards 0121 and 0151, respectively. This plywood is then pressure-treated with Sienna Brown Micro-Pro MCA preservative. MCA …