Heartwood colour ranges from a yellowish to pale reddish yellow (slow growing)
to orange red or reddish brown (fast growing), the colour varying greatly
in different samples. Sapwood is distinctly paler varying in width from
about 50mm in mature trees to 75mm in fast growing plantations. Growth rings
are very prominent because of the considerable difference in density between
earlywood and latewood; this also leads to a course unevan surface texture.
The timber is easy to work, although due to the difference in hardness
between earlywood and latewood some care is required in planeing and dressing,
differential glueing can occur and end spliting may result when nailing.
Douglas Fir is available in a large range of sizes and lengths, commonly
up to 7.2m and often longer. It has been regularly used as construction
timber in Australia for over 100 years as well as high grade joinery such
as windows, doors, mouldings, staircase components and exposed beams.