How To Protect Plywood For Outdoors Use?

Protecting outdoor plywood is crucial for extending its lifespan and maintaining its structural integrity in Canada’s diverse climate conditions. Whether you’re using our premium Pine Plywood, construction-grade ACX Plywood, or economical CDX Plywood, proper protection can significantly increase your project’s durability.

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Essential Steps to Protect Plywood

1. Seal All Surfaces

• Seal all edges, faces, and especially end grain
• Use high-quality exterior wood sealer
• Apply 2-3 coats for maximum protection
• Allow 24-48 hours between coats

2. Choose the Right Treatment Method

For Pine Plywood (3/4″ | 19mm):

• Apply oil-based wood preservative
• Use water-repellent sealer
• Consider marine-grade varnish for extreme conditions

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For ACX Plywood (5/8″ | 15.9mm):

• Apply exterior-grade primer
• Use paint or stain designed for outdoor use
• Treat both A and C faces

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For CDX Plywood (1/2″ | 12.7mm):

• Apply water-resistant sealer
• Use construction-grade preservative
• Ensure proper coverage on exposed areas

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3. Maintenance Tips

Regular maintenance is key to long-term protection:

• Inspect surfaces every 6 months
• Reapply sealer annually
• Clean surfaces before treatment
• Address damage promptly

4. Professional Installation Guidelines

• Maintain 1/8″ (3mm) gap between panels for expansion
• Use galvanized fasteners
• Install with proper slope for water drainage
• Keep plywood at least 6″ (152mm) above ground

Our Product Selection

We stock a complete range of outdoor-suitable plywood:

• Pine Plywood: Premium grade, ideal for fine outdoor furniture
• ACX Plywood: Perfect for siding and structural applications
• CDX Plywood: Economical choice for general construction

Visit our store or contact us for expert advice on how to protect your plywood for your specific application. 

All plywood products meet Canadian building codes and come with our quality guarantee.