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Douglas Fir Lumber Technical Species Information

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.