Reclaimed Redwood Burl
Prized for it's dark rich color we like to use larger redwood cuts as bases for our floor lamps. These large pieces of burl are hundreds of years old.
Common Name(s): Redwood, Sequoia, Coast Redwood, California Redwood, Vavona (burl)
Scientific Name: Sequoia sempervirens
Distribution: Coastal northwestern United States (from southwestern Oregon to central California)
Tree Size: 200-300 ft (60-90 m) tall, 6-12 ft (1.8-3.7 m) trunk diameter
Average Dried Weight: 26 lbs/ft3 (415 kg/m3)
Specific Gravity (Basic, 12% MC): .36, .42
Janka Hardness: 450 lbf (2,000 N)
Modulus of Rupture: 1,220,000 lbf/in2 (8.41 GPa)
Elastic Modulus: 8,950 lbf/in2 (61.7 MPa)
Crushing Strength: 5,690 lbf/in2 (39.2 MPa)
Shrinkage: Radial: 2.4%, Tangential: 4.7%, Volumetric: 6.9%, T/R Ratio: 2.0
Color/Appearance: Heartwood color can range from a light pinkish brown to a deep reddish brown. Sapwood is a pale white/yellow. Curly figure or Redwood burl (sometimes referred to as “lace” or by the name Vavona) are occasionally seen.
Grain/Texture: Grain is generally straight, though figured pieces may be be wavy or irregular. Coarse texture and low natural luster.
Endgrain: Resin canals absent; earlywood to latewood transition abrupt, color contrast medium-high; tracheid diameter large-very large; parenchyma diffuse (usually visible with hand lens).
Rot Resistance: Rated as moderately durable to very durable regarding decay resistance. Lumber from old-growth trees tends to be more durable than that from younger second-growth trees.
Workability: Typically easy to work with hand tools or machinery, but planer tearout can occur on figured pieces with curly, wavy, or irregular grain. Glues and finishes well.
Odor: Redwood has a distinct odor when being worked.
Allergies/Toxicity: Although severe reactions are quite uncommon, Redwood has been reported as a sensitizer. Usually most common reactions simply include eye, skin, and respiratory irritation, as well as asthma-like symptoms. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information.
Pricing/Availability: Should be in the mid to upper price range as a construction lumber, though clear and/or figured woodworking lumber is likely to be much more expensive.
Sustainability: This wood species is not listed in the CITES Appendices, but is on the IUCN Red List. It is listed as vulnerable due to a population reduction of approximately 40% in the past three generations, caused by a decline in its natural range, and exploitation.
Common Uses: Veneer, construction lumber, beams, posts, decking, exterior furniture, and trim. Burls and other forms of figured Redwood are also used in turning, musical instruments, and other small specialty items.
Capable of attaining heights of nearly 400 feet, Redwood (Sequoia sempervirens) is the world’s tallest tree species. It grows in a very limited area on the Pacific coast of northwestern United States, where heavy rainfall and cool, damp air create a unique environment for these trees. A related species, (Sequoiadendron giganteum), sometimes known as Giant Sequoia or Wellingtonia, produces similar lumber.
Redwood lumber is very soft and lightweight, with a decent strength-to-weight ratio. It is also exceptionally stable, with very little shrinkage or seasonal movement. The mechanical values listed at the top of the page represent the averages between both old-growth lumber and second-growth lumber. On the whole, old-growth lumber tends to be slightly heavier (29 lbs/ft3 versus 26), harder (480 lbf Janka hardness versus 420), and stronger (10,000 lbf/in2 modulus of rupture versus 7,900) than younger second-growth lumber.