Spruce (CSP) &Fir (DFP) Plywood
Hanford Lumber supplies high-quality CSP (Canadian Softwood Plywood) and DFP (Douglas Fir Plywood), manufactured to strict CSA (Canadian Standards Association) standards. These panels are produced by APA (The Engineered Wood Association) and PFS TECO-certified mills, ensuring reliable strength, durability, and long-term performance. Douglas Fir Plywood (DFP), manufactured under CSA O121, is known for its superior strength, stiffness, and resistance to impact, making it ideal for demanding structural applications. Canadian Softwood Plywood (CSP), manufactured under CSA O151, is a versatile and lightweight option that provides excellent durability for general construction. Both types of plywood use a cross-laminated construction technique, improving dimensional stability and preventing warping while also offering moisture resistance. Constructed with waterproof adhesives, CSP and DFP panels meet exterior bond classification requirements, making them suitable for both indoor and outdoor use.
CSP and DFP plywood panels are available in multiple grades to suit a variety of applications. Un-sanded sheathing panels provide structural integrity for walls, roofs, and floors, while smooth sanded panels offer a refined finish for interior applications. These panels are widely used in subflooring, engineered assemblies, and concrete formwork, where strength and moisture resistance are critical. Specialty options include fire-retardant-treated panels for enhanced fire safety and pressure-treated panels for increased protection against decay and insects in exterior environments. Their lightweight nature and ease of installation make them a preferred choice for contractors, builders, and engineers who require durable and high-performing materials.
With superior performance in strength, load-bearing capacity, and long-term durability, CSP and DFP plywood are essential materials in construction projects that demand reliability and efficiency. Hanford Lumber ensures that every panel meets the highest industry standards, providing customers with the assurance of quality and longevity. For product inquiries, availability, and pricing, contact our sales team today.
CSP/DFP panel assortment available:
CSP/DFP Rough Sheathing (Construction Grade)
| Thickness: | Width x Length: | |
| 3/8″ | 4’x8’ | |
| 1/2″ | 4’x8’ | |
| 5/8″ | 4’x8’ | (Also Available As Tongue & Groove) |
| 3/4″ | 4’x8’ | (Also Available As Tongue & Groove) |
Sanded Fir/Good 1 Side Fir & Select Sheathing: 1/4â€, 3/8â€, 1/2″, 5/8â€, 3/4â€, 1†4’x8’ sheets. (4’ x 10’ available on special request for certain items)
Degrade Plywood: 3/8â€, 1/2â€, 5/8â€, 3/4†4’ x 8’ sheets. An economical lower-grade panel used for hoarding, packaging, blocking and other applications which do not require structural-grade plywood.
Marine-Grade Plywood: 1/2†and 3/4†4’ x 8’ sheets. Other thicknesses available on special order. Marine-Grade plywood is composed of waterproof adhesives with a void-free core and is generally a good-2-side product (grade = ABX).
Pressure-Treated Plywood: 1/2â€, 5/8â€, 3/4†4’ X 8’ sheets. Structural sheathing pressure-treated with MCA brown-colored preservative for long-term exterior applications. Other thicknesses and types such as sanded panels can be custom pressure-treated upon request.
Fire Retardant-Treated Plywood: 1/2â€, 5/8â€, 3/4†4’ x 8’ sheets. Structural sheathing treated with fire retardant for interior use only used where required by the building code.
Custom pressure-treating and fire retardant treating available for all plywood items upon request.
For any further sizing and or grades not listed please reach out to our sales desk for a special order inquiry.
