Pressure Treated Plywood

Ply Supply Inc. offers pressure treated plywood (PT) engineered for long-lasting performance in outdoor and high-moisture environments. Each panel is infused with wood preservatives that protect against rot, fungal decay, and insect damage — extending the service life of your project well beyond untreated alternatives.

Our treated lumber plywood is available in standard 4′ x 8′ sheets in thicknesses of 1/2″, 5/8″, and 3/4″ to match your project requirements. Whether you’re building a deck substructure, shed floor, exterior sheathing, or any ground-contact application, PT plywood delivers the structural strength and weather resistance that Canadian outdoor conditions demand.