Richply D.Fir Sheathing is an un-sanded structural panel for the construction industry. DFP Sheathing panels may contain limited size knots, knot holes and other wood characteristics that do not affect the panel’s physical properties or performance in structural construction assemblies.

Plywood is the original engineered wood product. It is manufactured by laminating layers of wood veneer and phenolic resin adhesive under heat and pressure to form a cross-laminated panel where the grain direction of each layer of veneer is perpendicular to that of the adjacent layers. Once cured, the phenolic resin adhesive will not be affected by moisture and will not readjust if reheated.

Richply D.Fir Sheathing is produced to U.S. Voluntary Product Standard PS-1 Structural Plywood and is constructed using Group 1 Douglas Fir faces and backs, and with inner plies consisting of either Group 1 Douglas Fir or other specially selected Group 2 or 3 species. Richply D.Fir is available in C-D (Exposure 1 bond) and C-C (Exterior bond) grades.

Structural-I (Exterior bond) panels for engineered applications where design properties including tension, compression, shear, cross-panel flexural properties and nail bearing are of significant importance are also available.


Richply D.Fir Plywood is a structural panel rated for use as a load-bearing component for roof, wall, and floor assemblies in single-family and multi-family construction. It is also suitable for use in a wide range of industrial applications such as furniture and materials handling where plywood’s strength-to-weight ratio is an advantage.

Key Advantages:

  • Swell Resistance – when exposed to moisture, plywood is a highly stable panel which returns to its original dimensions after it dries. Plywood is up to 7x more resistant to thickness swell than substitute wood-based panels.
  • Light Weight – plywood weighs up to 40% less than substitute wood-based panels of equivalent thickness.
  • Strength – plywood is stronger than substitute wood-based panels in the four engineering strength properties of bending, tension, compression, and planar shear.
  • Durability – plywood is highly impact-resistant.
  • NAUF – manufactured with no added urea-formaldehyde.


Richply D.Fir C-D, C-C, and Structural-I Sheathings are available in standard 4′ x 8′ or 2’x8′ sheets in the following thicknesses:

Nominal Thickness # of
Per Unit
Weight per Sheet
Imperial Metric lbs kg
5/16” 7.5mm 3 100 28.0 12.7
3/8” 9.5mm 3 80 33.6 15.2
1/2” 12.5mm 4 or 5 60 44.8 20.3
5/8” 15.5mm 5 50 56.0 25.4
3/4” 18.5mm 6 40 64.4 29.2
7/8” 22.5mm 7 32 78.4 35.6
1” 25.5mm 8 30 89.6 40.6
1.1/8” 28.5mm 9 26 100.8 45.7

** weights are approximate and subject to change

Richply D.Fir Plywood is available Tongue-and-Groove (T&G) 2-long-sides for panel thicknesses ≥ 1/2″.

  • Easy T&G™ Roof eliminates the need for H-clips, prevents buckling and wedging, and enables fast problem free installation.
  • Easy T&G™ Floor has a self-spacing profile for uniform, ridge-free surfaces. Full-Face T&G available upon request.