However, there are plenty exceptions to that. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information. Hemlock Wood Color: a pale yellowish brown or buff color. Has a coarse, uneven texture. Hemlock’s uses include flooring accents, framing, pulpwood, and roofing shingles. However, it’s quite prone to decaying and is known for being difficult to work. Allergies/Toxicity: Eastern Hemlock has been reported to cause skin irritation. Woodworkers measure the hardness of a wood species by using the Janka hardness test. The conspicuous growth rings can exhibit interesting grain patterns on flatsawn surfaces. Is it appropriate for intererior use besides framing? Grain/Texture: Grain is generally straight, but may be interlocked or spiraled. Should do a article on Weather and bug resistant woods for exterior and inground use, (This is a monthly update, and your email will be kept private.). Along with its strength and stability, the nature of the wood allows it to glue, stain and finish beautifully. Hemlock. Hemlock Wood Hardness: Cedar’s Janka rating is 500. In sharp contrast, red oak comes in at 1,290 lbf, making it about 2.5 to 3 times stronger than hemlock and pine when impacted. Workability: Working properties are intermediate. When harvested, the Eastern Hemlock produces a light, reddish-brown wood. Hemlock offers a decent amount of strength for its density and hardness. Hemlock Spruce. We have property in North Georgia with several blighted Hemlocks. Although it is reported to be one of the hardest softwoods, as a flooring option hemlock is one of the least hard and durable woods. The species has an uneven, commonly twisted grain and is medium to coarse in texture. Common Name(s): Eastern Hemlock, Canadian Hemlock, Tree Size: 65-100 ft (30 m) tall, 2-3 ft (.6-1 m) trunk diameter, Average Dried Weight: 28 lbs/ft3 (450 kg/m3), Specific Gravity (Basic, 12% MC): .36, .45, Modulus of Rupture: 8,900 lbf/in2 (61.4 MPa), Elastic Modulus: 1,200,000 lbf/in2 (8.28 GPa), Crushing Strength: 5,410 lbf/in2 (37.3 MPa), Shrinkage: Radial: 3.0%, Tangential: 6.8%, Volumetric: 9.7%, T/R Ratio: 2.3. Color/Appearance: Heartwood is light reddish brown. Comments: In addition to its lumber, Eastern Hemlock is also known for its ornamental value, and hundreds of cultivars are known to exist. Fluorescence: A Secret Weapon in Wood Identification, Bow Woods (from a mathematical perspective), Brazilian Rosewood, East Indian, and Other Rosewoods, Genuine Lignum Vitae and Argentine Lignum Vitae, BOOK: WOOD! Janka Hardness: 500. What is the best way to repurpose the wood when building our home? Hemlock is used primarily as a construction timber, and is in good supply. Hemlock Wood Durability: Hemlock is vulnerable to insects. It is easy to work with common hand tools. Western hemlock also is harder, stronger, straighter-grained, and resin-free. FYI: I receive a commission on sales generated through links to Amazon, eBay, etc. It reacts severely to humidity changes and gets nasty black mildew very easily. The wood is reported to have a somewhat sour odor when green. Hemlock is diffuclt to dry properly, as warping is known to occur. (https://books.google.ca/books?id=5HBH2ibu-ZwC&lpg=PP1&pg=PA103#v=onepage&q&f=false), like this site, easy to read and use. Nailing can be difficult, as splitting occassionally occurs in the process. Further, the wood is brittle (especially if dried under 10 percent MC) and splinters easily when nailed. Consequently, this nearly threatened species is best left for rough products like pallets and plywood. However, there are alternatives for those as well. Also, because of the disparity between the soft earlywood and the hard latewood, sanding can create dips and uneven surfaces. Glue holds well with hemlock flooring. Hemlock is somewhat difficult to saw properly. Relative Hardness Table for Domestic and Imported Woods Janka Numbers For Domestic … Sapwood may be lighter in than the Heartwood but there is little color variance overall. Although it is reported to be one of the hardest softwoods, as a flooring option hemlock is one of the least hard and durable woods. Its preferred habitat is the wet coastal rain forests. Characteristics of Eastern Hemlock . The wood is reported to have a somewhat sour odor when green. Hemlock; While some of these woods are harder than others, none of them are a good choice, especially in their natural state, for outdoor furniture or projects that are kept in a humid or damp environment. Expect prices to be moderate for a domestic softwood. The Janka test measures the necessary force to embed a .44″ diameter steel ball halfway into a piece of wood. When compared to Western Hemlock (Tsuga heterophylla), Eastern Hemlock generally has wider growth rings, though both species can have tightly spaced growth rings. Beech, for instance, is very unsuitable for outdoor use. It is roughly three quarters as hard as Douglas-fir, forty percent as hard as red oak, and about thirty-five percent as hard as hard maple. The wood of Eastern hemlock is quite knotty. Consequently, this nearly threatened species is best left for rough products like pallets and plywood. The test measures the force required to push a steel ball with a diameter of 11.28 millimeters (0.444 inches) into the wood to a depth of half the ball’s diameter (the diameter was chosen to produce a circle with an area of 100 square millimeters). Identifying and Using Hundreds of Woods Worldwide, POSTER: Worldwide Woods: Ranked by Hardness. Technically it doesn’t meet the Red List criteria of a vulnerable or endangered species, but is close to qualifying and/or may qualify in the near future. The wood of western hemlock weighs more (about 29 pounds per cubic foot, dry) than that of its eastern relative. and as far east as Alberta. Treatment of the wood of some sort is advised, as hemlock has little natural resistance to decay. However, there are other alternatives for those two wood products as well. It is also moderate in hardness, stiffness, and shock resistance. Eastern Hemlock It is somewhat decay resistant. Based on Janka wood hardness ratings, hemlock comes in at 500 lbf (pounds-force). Sapwood may be slightly lighter in color but usually isn’t distinguished from the heartwood. Sustainability: This wood species is not listed in the CITES Appendices, but is reported by the IUCN as being near threatened. See the articles Wood Allergies and Toxicity and Wood Dust Safety for more information. 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