
Douglas Fir Lumber Technical Species Information
Detailed scientific and mechanical properties for Douglas Fir Softwood Lumber
Douglas Fir
Douglas Fir has the highest strength to weight ratio of any wood species. Primarily found in the western US and Canada, Douglas Fir is frequently use for dimension lumber in lower grades, and for interior finish work in upper grades. Douglas Fir clears are renowned for their strength, durability, and ability to stand up to the elements. In addition to its strength, Douglas Fir has rich coloring with the heartwood aging to a dark tan-red color and the sap wood remaining light tan. Vertical grain, clear Douglas Fir is widely considered to be one of the finest materials available for trim, mouldings, doors, windows, exposed beams, ceilings and paneling. Douglas Fir CVG flooring has been used throughout the US since the 1800's and is often found in classic historic homes.
Douglas Fir Wood Properties
- Janka Hardness
- 710 lbf
- Modulus of Rupture (MOR)
- 12,400 psi
- Modulus of Elasticity (MOE)
- 1,950 ×1000 psi
- Density
- 530 kg/m³
- Tangential Shrinkage
- 7.6%
- Radial Shrinkage
- 4.8%
- Botanical Family
- Pinaceae
- Tree
- Tree can grow to a height 130 feet of with a diameter of up to 5 feet.
- Distribution
- Western US, Oregon, Washington, California; Western Canada, British Columbia
- Other Names
- Pseudotsuga menziesii, Blue Douglas-fir, British Columbia pine, British Colubian pine, Coast Douglas-fir, Colorado Douglas-fir, Colorado Pino real, Colorado real, Columbian Pine, Douglas spruce, Inland Douglas-fir, Interior Douglas-fir, Oregon Douglas-fir, Oregon pine, Puget Sound pine, Red fir, Rocky Mountain Douglas-fir, Yellow fir
Douglas Fir Characteristics
Color
Heartwood is Golden-yellow to orange-red. Sapwood is light tan to light yellow.
Texture
Coarse to medium
Grain
Straight to wavy
Luster
Medium to high
Durability
Heartwood is very durable.
Drying
Rated as fairly easy to dry, with slight chance of splitting and checking
Workability
Workability is rated as easy.
Applications
Decking, flooring, construction, decorative veneers, furniture, joists, joinery, sub-flooring, plywood, wharf construction
Photosensitivity
Moderate
We stock KD CVG flooring in 1x4 and 1x6.
