Douglas Fir

Douglas Fir’s heartwood is a light reddish-brown shade, and the contrast between earlywood and latewood provides a prominent growth ring figure which shows as an abrupt colour contrast on plain sawn timber and rotary cut veneers. The timber is straight grained but sometimes with wavy or spiral grain and with a uniform medium texture.

Douglas Fir dries rapidly and well without much checking or warping, but knots tend to split and loosen. There is small movement in service. Resin canals tend to bleed and show as narrow brown lines on longitudinal surfaces. Moderately durable. Resistant to preservative treatment, especially American mountain-grown timber.