WestWood Heat Treated Lumber Production Corporation vapor-stabilization technology is a patented wood heat treatment technology, utilizing a natural thermochemical reaction and steam at temperatures of 230-240 C (450 F) and exclusive of any chemical additives. No.1 Drop Siding is graded as No.1 Boards; No.1 Flooring and Paneling not provided under SPIB Grading Rules as a separate grade, but if specified, will be designated and graded as D. Graded as No.2 Boards. This specific set of data for each charge is called a charge report. (@ 2=h/jO,,5rB
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Tough to find decent boards. For a better experience, please enable JavaScript in your browser before proceeding. Unfortunately, the water-soluble nature makes them susceptible to leaching out in rainy or wet areas, or near standing water. SPIB is subject to continual review by IAS to ensure that the laboratory and agency records remain in compliance. Pressure treatment is an affordable alternative to expensive naturally rot-resistant lumber. Many homes have fences, retaining walls, and garden boxes constructed of treated wood, and even the wooden utility poles supplying power and communications are pressure treated. PDF Reference Design Values for Visually Graded Southern Pine Dimension Penetration is verified on-site by the third-party inspector before sending the assay zones to the agency laboratory for retention analysis. Some on this forum think that is a waste of time, but I think it extends the life of the lumber. This website is presented by SFPA members, including: 2023 Southern Forest Products Association. Suitable for stud uses including use in load-bearing walls. It's distinctive wood grain appearance is great for decorative finishing. The dry wood is loaded into a treatment cylinder which is then sealed and depressurized to vacuum as much air as possible from the wood cells. Pressure treated lumber has been treated with a chemical solution to protect it from insects, mold, mildew, and rot. 139 0 obj
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'\ & Ls30+X61j\e(gV]]M(q9qs)loyM I am finding lots of info about how HT (heat treated lumber) is required for packaging, pallets etc to prevent the spread of some WDO across the world but can not find anything concrete on whether or not it is suitable for a deck. No matter what it is called or tagged, it should bear a stamp on the wood surface identifying it as SS, #1, # 2, or #3. This website is presented by SFPA members, including: 2023 Southern Forest Products Association. As I understand it, the grade refers to the number of knots in a given length. Dense Select Structural Select Structural. To qualify for a SPIB grade-marking license, a mill must have verified credentials in the manufacturing, seasoning, and grading of Southern Pine lumber. The stamps on lumber do not always include everything, the PT data is usually just on one of those plastic tags stapled on the end of the board which gets cut off or removed. This defect is exacerbated in the presence of Spi-1 haplo-insufficiency (Spi1+/- SpiB-/-). Dont know anything about the HT lumber, but if you are in the west, the PT is still Western Hemlock and looks pretty much the same as before. This cryptic tattoo indicates that a piece of wood meets established standards for strength and stiffness, and it also offers useful information about the type of wood and how much moisture it contains. This process is required through the plants Internal Quality Control (IQC) for all treated lumber products to be represented as meeting an applicable standard. Preservative Treatment When pressure-treated lumber is required, it should be treated according to appropriate American Wood Protection Association (AWPA) Standards or through the product evaluation process of the International Code Council (ICC) Evaluation Service. Both #2 grades have all the characteristics, including knot size, of regular #2 grades but are selected for 4 square edges (very light to no-wane or bark). WestWood Heat Treated Lumber Production Corporation is unique technology that uses heat treatment instead of chemicals for timber processing to significantly improve various characteristics of wood. The pressure-treatment process Timber components, machined to their finished dimensions and at an appropriate moisture content, are impregnated with preservatives in large pressure vessels, where the combination of vacuum and high-pressure drives the preservative into the wood. Email: cspsales@canfor.com. Description & Documents #2 prime southern yellow pine with virtually no wane CA-C Above Ground pressure treated exterior wood protected by Ecolife (EL2); a stabilizing formula that repels water keeps boards straighter and looking better longer Ecolife (EL2) provides built-in water repellency that lasts for up to 3 Southern yellow pine in the eastern U.S., spruce pine and fir in the northern U.S. and eastern-central Canada, and Douglas fir, fir, and hemlock in the western U.S. and Canada. Box 10915 Pensacola, Fl. Luckily, a more budget-friendly option of pressure treated lumber grades is available. 1s and Selects, to boot. While all species are graded at the same four levels of strength and appearance, they are not equally strong. 1, No. Dressed to standard dry size prior to machine stress rating, and visually graded to assure that characteristics affecting strength are no more serious than the limiting characteristics for each grade. Pressure treated lumber commonly is end-tagged with an information label before leaving the plant. Used for such purposes as studding, blocking, plates, bracing and rafters. MSR lumber is distinguished from visually stress graded lumber in that each piece is non-destructively tested. Pressure treatment doesnt make the wood stronger or weaker, just more resistant to insect and moisture damage. s The ALSC also accredits third-party agencies, like SPIB, to inspect treating plants that produce treated lumber products with preservative systems listed in the American Wood Protection Association (AWPA) Book of Standards (BOS). Here is a list and description of some of them. Tyrosine phosphorylation and calcium mobilization induced by BCR engagement is diminished in Spi1+/- SpiB-/- B lymphocytes, although many key BCR signaling proteins are expressed, suggesting that Spi-1 and Spi-B regulate expression of additional . The result of having a unified rating means the end-tag on lumber identifies how well the wood will stand up in different conditions, regardless of the chemical cocktail its been exposed to. It must specifically be labeled ground contact. 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. check out this FAQ web site. By submitting your email, you agree to our, 5 Easy Ways to Remove Scratches from a Glass Window, Build It | Shaker End Table with Char Miller-King, Do Not Sell or Share My Personal Information. Like all lumber, the fewer knots, blemishes, or defects, the higher the grade. Most of this new treated lumber looks untreated as compared to the old green stuff, I did learn that they add color to some of it to try and make it look more like treated. If the wood is #1, it is stamped #1. The grade-mark must contain the first four items listed below; the fifth item is optional. The clear appearance makes it a choice for trim, furniture, and cabinetry. This Old House general contractor Tom Silva usually buys stacks of No. Prime Dimension: 2" to 4" thick, 2" to 12" wide; See Table 1 for design values: Grade: Grade Characteristics and Typical Uses: No.1 Prime: Recommended where appearance and strength are a consideration. The most noticeable difference may be the price and scarcity of #1 grade lumber. PDF AC2 Pressure Treated 8:16 - Midwest Manufacturing This information must include the charge number, treatment date, products treated, tally, cycle parameters and preservative solution strength for each charge. An internet search says it has to do with less knots and quality, and that #1 is of higher quality. The preservatives dont affect the load-bearing abilities, just provide protection against insect, mold, mildew, and rot damage. Older growth wood is better but more expensive and difficult to find. s Pressure treated lumber is available in 1, 5/4, 2, 4, and 6 nominal thicknesses, and widths up to 12. Most lumber in my area is listed as Prime or Premium depending on the box store and is stamped #2 or #2 & BTR. What is the Best Pressure Treated Wood for Decks? Termawood is an unique technology that uses heat treatment for timber processing to significantly improve various characteristics of wood. Appearance is same as C Finish for thicknesses of 4" and less and widths 12" and less. An economical roof decking which conforms to No. SPIB is able to assist manufacturers achieve and maintain the quality that their customers require by employing highly qualified instructors. #2 Prime Southern Yellow Pine Above Ground Actual: 1.5-in x 5.5-in x 12-ft #2 Prime Southern Yellow Pine Above Ground Actual: 1.5-in x 5.5-in x 12-ft Treated for protection against fungal decay, rot and termites Treatment meets AWPA (American Wood Protection As I did some research and found that they only staple the PT label to the end of the boards in many cases. t|]UE)@Whi`_@z>'}8/p}8c };hax{Hk[qMkhpcge/*b7_W?!r*uEkGhKZS$_~Zuzrxx xo)>kf}sgn^k4$=!i[*5X,y-ZrZ1
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IS)VY23xe@YY_Q_Y_Q_Y_Q_Y_Q_Y_Q_u_BNt/;(.? This approach is intended to consider the big picture trends as opposed to allowing otherwise isolated issues to severely affect plant performance status. Tell us how we're doing! Grade based on No.2 Dimension Lumber except wane and other characteristics that affect appearance are limited. Please keep in mind, that with the advent of prime grades, the differences between the grades of lumber have become even more defined and distinct. These requirements are initially checked by the producing treating plant, but are ultimately verified by independent, third-party agencies that ensure plants produce treated wood products in accordance with industry standards. When pressure treated it is resistant to decay and termites. Standard grade lumber has more defects and knots and is #2 structural grade wood. Pressure-treated wood can dry in about 1 month, whereas fresh wood provides an environment where fungi and bacteria produce rot and insects infest. endstream
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SPIB is committed to assisting our customers meet their treatment goals in the most cost-effective means possible. Grade based on No.1 Dimension Lumber except wane and other characteristics that affect appearance are limited. s Pressure Treated Lumber Grades, Types, and Uses Explained I do like to cover the tops of the joists and beams with ice and water shield. CCA is a mixture of chromium, copper, and arsenic that turns wood green. Office: (850) 434-2611 | Toll Free: (800) 995-7742 See Finish grades for face side; reverse side wane limitations are lower. The solution protects the wood from rot, insects, fungus, mold, and mildew, and also turns the wood a brown tone. Walking into a lumberyard or store can be a daunting experience. MC-15 identifies lumber as having 15% or less moisture content. KD HT lumber vs PT lumber for deck - InterNACHI Forum Thanks to all, ill never outlive ground contact or not, but maybe for the kids ill go with the lumber yard ground contact since they did the quote and its not much more dough. However, they make an ideal solution for use in arid or dry locations. Research shows that . I will try to post-some new treated lumber being sold in the wood depot I go to referd to as BLUE if I am not mistaken. Non-stress rated, but economical for general utility purposes such as bracing, blocking, bulkheading, etc. A superior decking grade, suitable for plank floor where face serves as finish floor. The current process is mostly computerized and mechanized using modern technology. it's primarily 2x planks. #2 Prime/Appearance Grade (APG): A step up from #2 in appearance, this grade will have characteristics . I'm redoing my deck surface and the lumber yard stocks only prime lumber. Recommended for general framing purposes. Pressure treated wood can also be stained or sealed to enhance its color and for added protection. No.2 Non-Dense No. s Where applicable, the International Building Code requires that all treated wood products be treated and labeled as meeting specific AWPA Standards and bear the mark of an ALSC-accredited agency OR equivalent. MSR Scaffold Plank is available 2"-thick only. Working with pressure treated lumber is similar to working with untreated planks. 2 grade lumber, commonly referred to as "#2 & Btr" is used where high design values are required and high appearance in not a factor. It has nothing to do with the wood being pressure treated (PT) at all. Ground contact level treatment (.15 pcf) has more than double the preservative of above ground level treated wood (.07 pcf) Lighter, more natural wood appearance for improved staining qualities. The wood weathers better than untreated wood and wont gray or discolor as quickly.