Treated Fir Construction Plywood is pressure-treated for improved decay resistance in applications where the sheathing may be exposed to moisture, ground contact, or high-humidity conditions. Standard fir construction plywood with added preservative treatment. Available at Windsor Plywood locations across Canada.
Features
- Pressure-treated for improved decay resistance
- Standard fir construction plywood with preservative treatment
- Available in standard 4 x 8 ft sheets
- Suitable for high-moisture and ground-proximity applications
Specifications
| Product Type |
Treated Fir Construction Plywood |
| Treatment |
Pressure-treated (preservative) |
| Sheet Size |
4 x 8 ft |
| Thicknesses |
9.5mm, 12.5mm, 15.5mm, 18.5mm -- confirm at your branch |
| Availability |
In-store |
Common Uses
Used for wall and roof sheathing in high-moisture areas, below-grade applications, rim board, and any structural sheathing application where the panel may be exposed to moisture, insects, or ground proximity.
Pro Tips
- Use corrosion-resistant (ACQ-compatible) fasteners with treated plywood. Standard fasteners corrode rapidly in contact with treatment chemicals.
- Treated plywood can be cut and installed with standard tools. Wear a dust mask when cutting -- treated wood dust should not be inhaled.
Frequently Asked Questions
Is treated plywood required for all sheathing?
No. Treated plywood is required where the panel will be in contact with or in close proximity to the ground, in high-moisture environments, or where specified by your local building code. Standard untreated sheathing is sufficient for typical above-grade wall and roof applications.
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