Hem-Fir is a combination of western hemlock species (Tsuga heterophylla) and five of True Firs: California Red Fir (Abies magnifica), Grand fir (Abies grandis), Noble Fir (Abies procera), Pacific Silver fir (Abies amabilis), and White fir (Abies concolor). While Western Hemlock and True Firs are sometimes marketed separately in products graded for appearance, these species share similar design values calibrated to manufacture products interchangeable structural applications.
The combination of Hem-Fir species is one of the largest in the Western region, second only to the species group Douglas Fir-Larch in abundance, production volumes, strength and versatility in the final use.
Hem-Fir wood is light and bright in color, varying from cream, almost white to light straw-brown color. It can be as light or lighter color than some of the Western pines and is often considered by those seeking a solid wood with a very light color, as the most desirable western softwood. Occasionally, western hemlock may have a slight dominance of lavender, particularly around knots and in the transition zone between the growth rings in the spring and Summerwood. , Delicate streaks attractive, dark gray or black may appear in the wood. There is little color variation between the heartwood and sapwood.
Hem-Fir is also preferred by many users because its burst strength and ease of sawing splinter; the ability to retain a variety of glues and adhesives; moderate and light weight. It is straight grained, hard, rugged, easy to work and relatively free land.
The WWPA GradeMark identifies the Western lumber products backed by quality guarantees, performance and technical desupport. WWPA maintains a team of lumber inspectors throughout the region West to monitor the classification and western wood products quality control factories WWPA members, ensure products consistently meet quality requirements. In addition, WWPA has technical experts on staff with the training and work experience in the design, engineering, timber specifications, code compliance, construction, lafabrication, Technology wood and forestry. The headquarters of the Association, these experts offer technical assistance in all aspects of the final use of the Western Wood Products WWPA members of societ