Fancy, expensive lumber yard only carries Douglas Fir. The most common types of chemical used to treat wood are Alkaline Copper Quaternary (ACQ), Copper Azole (CA), and, the newest type, Micronized Copper Quaternary (MCQ). Except as otherwise noted, the values are computed in accordance with ASTM standards based on clear-wood tests or on tests of full-size pieces in specific grades. Douglas fir are easily recognizable and so are Hemlocks. SPF - Douglas fir, spruce, or white pine; SYP - Southern yellow pine; SYF - Pine and fir; If you do not see these markers, it is still possible that you are not purchasing whitewood that comes from the tulip tree. Both the Hemlock firs and the Douglas firs are large fir trees. . It paints well but is prone to cracking. Douglas Fir/European Larch - Austria, The Czech Republic & Bavaria 0.47 Montane Pine - South Africa 0.45 8×12's on top and 8×8 posts. Because raw Douglas fir quickly rots underground, most builders use pressure-treated Douglas fir posts, which are still less expensive than redwood. We used incised for under cribbing for better treatment penetration and SFS for decking, facia and hand rail material because of esthetics. The basic difference between the two woods, as far as appearance is concerned, is that Douglas firs are very light brown in color, whereas Redwoods, as their name suggests, are reddish brown to brown in color. This wood is used in the manufacturing of more products than any other lumber species. October 2016. Wood fences installed by a professional fence service are some of the most attractive and useful property enclosures for a home, usually because there are so many . (Spruce-Pine-Fir) • Hem-Fir (Hemlock-Fir) • D. Fir-L (Douglas Fir-Larch) • SYP (Southern Yellow Pine inspected by the Southern Pine Inspection . It can be used in direct contact with the dirt without rotting and holds . Today, it would be unusual to see fir lumber, as fir is mixed with other species (hem-fir and SPF). Lumber that is does not have the SPF species stamp may be stamped "DF-L," standing for Dougas fir and larch, or "Hem-fir," standing for western hemlock and several true fir species. Douglas-fir grown west of the summit of the Cascade Mountains. COTTAGE GROVE . This wood has comparable properties to Douglas fir and can be used in most situations. has a natural looking brown tone. Pressure-Treated Pine - Probably the most readily available rot resistant wood in America. The chemical treatment allows the wood to resist insects, bacteria as well as fungi. Uses for SPF Lumber PLIB O-31. A 10-foot-long 2×6 pressure treated lumber board weighs around 40 pounds right after being treated. Green Douglas-fir. We had originally hoped to decrease treatment variability in the Hem-Fir group by obtaining Hem-Fir predominantly consisting of western hemlock grown in the Hem/fir tends to be a bit more squirrely (prone to twisting, warping, bowing and splitting) than Doug fir. It encompasses a group of western species. The heartwood is not distinct. We custom ordered some large rough (full dimension) pressure treated douglas fir beams to build a trellis. Hem-Fir, HR Hem-Fir products are white to a light straw color, sometimes with a slight lavender cast, especially around the knots and in the transition area between the spring and summerwood's growth rings. In the same way, there are also a number of varieties of fir, including hemlock fir, which can affect your decision differently if you are thinking about hem fir vs. pine. All of the ends of the upper beams are rotted away back about 16 to 24 inches in from the end. Can be painted or stained. Elastic Properties Twelve constants (nine are independent) are needed to de- Denotes the wood's species or a group of species with similar strengths. Next, the strongest softwoods also tend to have high compressive strength ratings. Its durability and resistance to rot and insects make it a favorite choice for outdoor projects like porch decking as well. Treated Products: Douglas Fir; Treated Products: Hem Fir; Treated Products: Ponderosa Pine Pressure-Treated Wood Decking vs. Composites. 5. The lumber has a tag that says ground contact, .40, CCA, and a lot of other stuff. Douglas Fir S4S make beautiful natural wood beams. ACQ is a water- based wood preservative that prevents decay from fungi and insects. Wood with a lower retention level has a lower amount of copper and, therefore, a lower cost. Does anyone know (or can provide references for) the issue of the specification of pressure treated sills at shearwalls having been resolved by the use of current Borate based treatments. Uses for Pressure Treated Wood vantage of pressure-treated lumber, particularly species such as Douglas-fir and the Hem-fir species group (hemlock and the true firs) that are commonly used in California and the West, is that the lumber is only treated at and near its outer surface. It is best to avoid spruce and . Predominant material found in western U.S. and Canada. 550kg/m³. Ipe decking on backyard deck, the original softwood decking rotted out. We had originally hoped to decrease treatment variability in the Hem-Fir group by obtaining Hem-Fir predominantly consisting of western hemlock grown in the Those big stores are selling a "generic" pressure treated fir at a slightly lower price than The Lumber Baron's more dependable Douglas fir. 2-in x 6-in x 12-ft Douglas Fir Lumber. If you decide to build a fence with Douglas fir to save money, protect the wood by painting it every few years with a high-pigment paint containing anti-rot agents. Douglas Fir is what is pressure treated, redwood cedar or oak would survive, pine most likely would be . Get pricing online using our custom quote request form below, or call us now: 1-(800) 597-7191 In order to give you the most accurate quote, we will need specific size, species, and grade information before we can prepare a custom estimate. Of the wood species most commonly used for building-Douglas fir, spruce, and hemlock-only Douglas fir is somewhat resistant to termite. It is my understanding that previously the specification of Doug-Fir for pressure treated material was widely unavailable and that Hem-Fir was infact widely . vantage of pressure-treated lumber, particularly species such as Douglas-fir and the Hem-fir species group (hemlock and the true firs) that are commonly used in California . A study by the EPA in 2000 deemed it too hazardous for residential use, and in 2003 the lumber industry agreed to stop using it for residential purposes. (Maximum spans for Douglas fir-larch, hem-fir, southern pine and spruce-pine-fir and required number of jack studs) Ground Snow Loads Ground Snow Loads 50 50 20 28 36 20 28 36 Girders and Headers Supporting Size Span NJ* Span NJ* Span NJ* Girders and Headers . Most pressure treated lumber is sold with a green cast; our Naturewood P.T. They can also glue up pressure treated wood and the cost is $75 each. This strong, reliable and workable wood is perfect for use in many projects. Perfect for porch posts, bunk beds, furniture, general construction and crating. Douglas Fir - It is very strong and is less prone to warping and spitting than SYP. Any of these stamps may be found on lumber used for standard framing construction, depending on where the lumber outlet buys its products from. It all just depends on what you are planning . They have soft needles with white lines. We custom ordered some large rough (full dimension) pressure treated douglas fir beams to build a trellis. In order to get to the required retention level, some species of lumber (such as Douglas fir, hem-fir, and spruce-pine-fir) have to be incised, which allows the preservative to penetrate the wood more deeply and uniformly. Good strength and practicality. Structural and framing products of these species should be pressure-treated with preservatives to resist decay and insect damage. Design values provided herein are for Western softwood species manufactured and shipped by mills in the 12 contiguous Western states and Alaska. Douglas-fir grown west of the summit of the Cascade Mountains. It may simply just be different than the picture you had . The extra work involved is offset by the cost savings. Model # 637588. . Hem-Fir Wood Deck Boards . $\begingroup$ @OlinLathrop Absolutely; for example, the pressure-treated stock I've seen locally is Hem-Fir while the common wood is either Doug fir-Larch or SPF (stronger and weaker, respectively, than Hem-fir). They are best used where the wood remains . By using square brackets at each corner and straight metal brackets to join the boards vertically, boards made from Douglas fir for raised beds can be stacked to build a taller raised garden bed . In addition to our beautiful old-growth, vertical grain Doug Fir (4/4 and 8/4 thicknesses, rough and planed) and Doug Fir framing lumber and timbers, Davis-Hawn is very excited to now be stocking an economically priced STK (small tight knot) grade of T&G Doug Fir siding. I'm going to build a patio cover. Dimensional lumber is used for floor joists and is typically Douglas-Fir, Hem-Fir, Southern Pine, or Spruce-Pine-Fir, which are naturally untreated. Doug Fir, D Fir-L: Douglas fir (L=western larch) SYP: Southern pine; Hem, Hem-fir, H-F: Hemlock or fir; S-P-F: Spruce, pine, or fir; Kiln-dried wood moves less and is preferred for structural work. When we cut it to length, the penetration was about ⅛" all around the periphery. Lumber Design Values. It is easily pressure treated with preservatives, making it useful for decks and other outdoor amenities. I think I've reached the paralysis by over-analysis stage. Engineering Properties of Visually Graded Structural Lumber Douglas-Fir-Larch, Hem-Fir, Spruce-Pine-Fir. Douglas Fir is of the Psudotsuga genus (notice "kinda Hemlock" not "kinda Fir") It is the second tallest tree in North America and grows along the eastern coast and comprises of most of the Fir lumber in the US. Excellent screw and nail holding. While kiln-dried wood is useful for some applications in the landscape, pressure-treated wood is more commonly used where exposure to moisture or . Hem-Fir (North) 0.46 Mixed Maple 0.55 Mixed Oak 0.68 Mixed Southern Pine 0.51 Mountain Hemlock 0.47 Northern Pine 0.42 Northern Red Oak 0.68 Northern Species 0.35 . . The lumber has a tag that says ground contact, .40, CCA, and a lot of other stuff. These axes are shown in Figure 4-1. The shorter longevity of the larger If you choose pressure treated lumber, take note that 85% of pressure treated lumber sold in the US is southern yellow pine, so that is probably what . Model # 720966-12. Douglas fir is not readily available in some areas, so hemlock-pine (also known as "Hem-Fir") is a good alternative. A stack of "Ground Contact" pressure-treated lumber. for pricing and availability. Kiln dried for less shrinking, splitting and cracking. Hem-Fir - It is weaker and more prone to warping and splitting than Douglas fir, but more receptive to preservation. While kiln-dried wood is useful for some applications in the landscape, pressure-treated wood is more commonly used where exposure to moisture or . Stress-graded structural lumber is produced under two systems: visual grading and machine grading. Southern longleaf pine has a rating of 870 lb-ft. Douglas fir comes in between the types of pine, with its own rating . However, that is not to say that your project will turn out poorly. Douglas Fir Timber Properties. Look them over really close. most big box stores carry pressure treated hem or hemlock fir, a species of fir more prone to splitting, warping and even twisting (see above photo) they buy the material at far lower prices, put a steep markup on it, and sell the hem fir for only a fraction below what we sell our pressure treated doug fir for, taking advantage of the average … 700kg/m³. Pound for pound, Douglas Fir is one of the strongest western soft woods. A joist made of Douglas fir, for instance, will cover a greater span than a hemlock joist of the same size and grade. However, cedar significantly outperforms fir in its resistance to decay and wet conditions. 6. Most pressure treated lumber where I practice is Hem-Fir and it takes the pressure treating well. Wood fences installed by a professional fence service are some of the most attractive and useful property enclosures for a home, usually because there are so many . I built docks and piers for years here in SoCal and it was always specified PTDF (Pressure Treated Douglas Fir) on the plans. Visual structural grading is the oldest stress grading system. Get in-depth product information on all the Lumber & Engineered Wood products we sell at Morrison Bros. Fire Treated KDAT Douglas Fir, White Fir, Hem-Fir, S-P-F. We proudly offer our FSC®-Certified lumber and plywood pressure impregnated with FlamePRO® brand fire retardant; a highly successful formulation of Interior Type A High Temperature (HT) fire retardant chemicals based on the American Wood Protection Association (AWPA . The force required to accomplish that is measured and assigned as the wood's rating on the Janka scale. Click to see full answer. Click to see full answer. Color. It is a reversible V-Groove/flush T&G pattern, perfect for ceilings . for pricing and availability. What is the difference between hemlock and Douglas fir? If I had known, I would have asked for . The only area where fir decking seems to have a comparative edge over Ipe decking is in the initial price of the decking. Simply put, the earlywood is fairly soft and the latewood is dense and tough. We know this is heresy to lumber dealers, but if you select vertical grain fir, cure it properly and prime and paint it thoroughly, it will . 2-in x 4-in x 10-ft Douglas Fir Lumber. (Exceptions for special orders; true fir trees are generally too small to make veneer profitably). Find My Store. outstanding pressure-treating performance and offer exceptional wear resistance on high-traffic areas in outdoor applications. Cedar is not very good timber, Douglas Fir is much preferred. 1. The heartwood is not distinct. You can either get it SFS (surfaced four sides) or incised. These three species groups represent the most commercially im-portant woods that are incised and treated in the United States. All of these are considered softwoods and are graded under the American Softwood Lumber . Find My Store. "When you stand for nothing, you end up falling for everything." This decision may be controversial to some, but starting immediately, The Lumber Baron will no longer be carrying any pressure treated douglas fir lumber. Their own unique properties and availability can vary by region. Many woods have a substantial difference between the so-called earlywood (sometimes called springwood) and latewood (summerwood) in their annular rings, but in SYP (and douglas-fir, which we'll get to soon), it's dramatic. The shop where I get most of my material cannot source a good straight piece of fir so they glue them up. The same board only weighs around 23 pounds after it has had time to dry out. untreated Douglas-fir heartwood were estimated to have a service life of only 12 years in southern Mississippi (Highley & Scheffer, 1986), consid-erably less than the 20+ years life determined for the test crosses of the same species used in the present test. Redwood . Take Doug Fir beams for example. 4-2 the tangential axis T is perpendicular to the grain but tangent to the growth rings. The lumber's core usually cannot be treated (Figure 2). In terms of actual stiffness ratings, the least elastic softwoods are yellow pine, Douglas fir, Hemlock, Cypress, & Spruce. Hemlock is a wood that absorb's moisture well, its often used in pressure treated. Typical structural woods include Southern Pine, Douglas Fir, Hem-Fir, Redwood and Spruce-Pine-Fir (SPF). Old-Growth Redwood - Once again, the old-growth version of this wood is very resistant to rot and insects. CENTRAL SALES NORTHWEST • 1.800.426.0870. . DOUGLAS FIR, SPF AND HEM FIR Central Sales No LUMBER. Turns out Douglas fir is more than just a good-looking wood. It is easily pressure treated with preservatives, making it useful for decks and other outdoor amenities. As you may have already noticed in the chart, those woods also have the top five bending strength thresholds in almost the same order. Curving grows well on this wood. After learning this year from a customer (the state or local agencies gave us zero warning) that the local dumps are no longer accepting pressure treated lumber, and it has . Pressure treated lumber intended for structural applications should have a research report that covers usage, labeling, and . As you move east, lumberyards stock both DF-L and Hem Fir (HF). Even in contact with wet ground, cedar species take a long time to rot. Both cedars and firs are softwood trees, with hardnesses ranging between 320 pounds-force on the Janka hardness scale and 490 pounds-force. And if you store them, keep them out of wind and sun in a dry cool place, off the ground. At 99 cents each, you may be getting restacked "pickovers" that have been rejected at least once, poorly stacked, etc. It is based on the premise that the mechanical properties of lumber differ from . If the On average, cedars are slightly softer. Phytosanitary Treatment (Heat Treatment) • HT: the lumber has been heat treated to the international standards for core temperature and length of time sufficient to kill a series of pests. Hem - Fir generally means Hemlock .. SPF typically has some interior fir and balsam mixed in .. but not often D-Fir .. D-Fir is a bit more valuable, as such, its typically stamped D-Fir .. Loggers can tell the difference. Pressure Treated. (See "Wood Code," below). Redwood and Douglas fir lumber are not the same, and each has its own advantages over the other. . Usually, pressure treated wood is created using yellow pine with an infusion of chemicals such as Alkaline Copper Quaternary, chromate copper arsenate ( Abolished in the US), etc. msquared48 (Structural) 11 Sep 07 16:53 Cedar is weak in bending in relation to either Dopuglas-Fir or Hem-Fir, and Douglas-Fir is hard to pressure treat. The needles are flat and not stinging or rigid. The machine is easy to work with Douglas fir wood. Pressure-Treated Hem-Fir Lumber is a dark natural looking brown color to blend in with outdoor projects. The Douglas Fir is a more defined species, but is still not a real Fir tree. Usually, it would cost about 30% or 40% less Redwood would cost. Mike McCann McCann Engineering Pressure treated lumber can last 20 years or more, and most pressure treated wood comes with a limited lifetime warranty. This dimensional lumber should be used with hot-dipped galvanized fasteners and connectors. Chromated Copper Arsenate (CCA) CCA is a mixture of chromium, copper, and arsenic that turns wood green. It's lightweight and easy cutting properties make Douglas Fir great for home improvement. Having the right amount of moisture. Douglas-fir-larch, which can either be Douglas-fir or western larch; Hem-fir, which can either be western hemlock, California red fir, grand fir, noble fir, Pacific silver fir, or white fir . Other treatment designations relating to end-use applications include "Above Ground", "Foundation . Naturewood utilizes the ACQ treatment process (Alkaline Copper Quaternary). Susceptibility to damage Unfortunately, Hem-fir is a little bit more susceptible to water and insect damage than its counterparts; the likes of Doug-fir, SYP and SPF. Doug Fir, D Fir-L: Douglas fir (L=western larch) SYP: Southern pine; Hem, Hem-fir, H-F: Hemlock or fir; S-P-F: Spruce, pine, or fir; Kiln-dried wood moves less and is preferred for structural work. Likewise, fir plywood would not be seen, but if some plywood is called fir, then it is referring to Douglas-fir and not true fir. Due to the ready availability of inexpensive pressure treated wood and other materials that hold up well against decay, untreated dimensional lumber such as hem-fir is not often used as decking boards, But with its low prices, hem-fir certainly can be used as long as precautions are taken against insects and . Unseasoned Density. 8×12's on top and 8×8 posts. I was going to use an appearance grade PT wood for the posts and beam, a construction grade PT for the ledger board, and premium standard and better select douglas fir dimensional for the rafters. All Fir trees are of the Abies genus. White pine has a 420 lb-ft rating on the Janka scale. It's at every home store and is very resistant to rot and insects. However, pressure-treated lumber can be an option for floor joists in a crawl space. Hem-Fir. . But, this should not be a major issue since the wood can be regularly pressure-treated or merely primed or painted to reduce its vulnerability. Southern yellow pine (shortleaf and Loblolly) has a rating of 690. It was widely used as a preservative from the mid-1930s to 2004. Its pressure treatment makes the wood resistant to rot, decay, and termites, ideal in damp environments. Pressure-treated cypress and redwood don't carry the same hazards as regular treated lumber, making it a much better choice . Douglas Fir. If I had known, I would have asked for . There are numerous life cycle assessments and studies on the environmental impacts associated with the national production, use, and disposal of treated lumber decking, especially when compared with non-lumber . Hem Fir Vs. Doug Fir Hem-Fir products are white to a light straw color, sometimes with a slight lavender cast, especially around the knots and in the transition area between the spring and summerwood's growth rings.

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