endstream endobj 146 0 obj <>/Filter/FlateDecode/Height 49/Intent/RelativeColorimetric/Length 6519/Metadata 150 0 R/Name/X/Subtype/Image/Type/XObject/Width 174>>stream #1 #2 prime etc deals with the quality of the board. Recommended for general construction purposes where appearance is not a controlling factor. So, weve covered a lot of ground, but this is not the end, not by a long shot! Most lumber in my area is listed as Prime or Premium depending on the box store and is stamped #2 or #2 & BTR. Pressure treated wood may require several weeks or even months to dry before it will absorb stain or paint. SPIB is committed to assisting our customers meet their treatment goals in the most cost-effective means possible. The appearance doesnt affect the structural grade, it just is superficially more appealing. MC-15 identifies lumber as having 15% or less moisture content. Grademarks. Pressure treated to a Ground Contact retention of either ACQ or CA Chemical preservative. Treated wood products must meet very specific quality requirements to meet the building code. s ehV$W'A Modern chemical baths and pressurization began in the early half of the 20th century. MCA is an environmentally friendly water-based preservative considered safe for humans and animals and is an alternative to CCA. ACQ is another environmentally safe preservative composed of soluble copper and either quaternary ammonium alkyl or substitute compounds. There are many other uses for pt lumber, including docks, boathouses, sheds, boardwalks, play structures, gazebos, and the list goes on. Wearing safety glasses or a shield protects the eyes from dust and debris when drilling, cutting, or sanding, and a dust mask will prevent inhalation of dust and chemicals. These Standards are very prescriptive in the requirements for Quality Control procedures, preservative penetration, analysis methods for retention, in-plant equipment, records and third-party agency responsibilities and requirements. Larger sizes conform to Dense Structural 65 Structural Lumber except for dense grain requirement. r Termawood is an unique technology that uses heat treatment for timber processing to significantly improve various characteristics of wood. Southern yellow pine (SYP) is very strong and is common in the eastern U.S. A mixture of spruce, pine, and fir (SPF) dominate much of the northern U.S. and eastern and central Canada and isnt as strong as SYP. Ill suffer with pt. Non-stress rated, but economical for general utility purposes such as bracing, blocking, bulkheading, etc. Premium is often identified as A, B, C, and D. A has no visible defects, knots, or splits, B has a few small defects visible, C may have small knots on one side and none on the other, and D may have pin size (up to 1/2) knots or small defects on both sides. It is not as strong as the other grades and is commonly used for where it wont be visible, and light framing purposes such as bracing, crates, and pallets. IMO when buying PT for above ground use, quality and appearance is what counts. Pro Note: All copper-based wood preservative solutions will corrode unprotected iron and steel brackets and fasteners. 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. The amount of moisture in the wood at the time of milling is noted. Records, trained personnel and an approved, properly equipped laboratory (either in-house or an approved external lab) are also required to complement the penetration and retention sampling requirements. 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. THIRD-PARTY AGENCY AUDIT and SAMPLING PROCEDURES. Both can be used for load-bearing purposes or other outdoor applications. They dont discolor the wood and protect against insects, molds, mildew, and fungi. HWW&)@@vaU\P}qtyneG@@x7]Ia8QNoW%T"HH zB-rJ(TG?e)-3"kzvdkMwTXcfb`UML||d]/t@Q1~Q#|30LQA RG vy_rfazhfx NL+XEB7Hb%Y5?_9_h4}EZ^R Z}'a1+&z&j+m}b? z[TWL*baKq @NO{CHpXa2 PkHX%W!AH0aP1 bB z%Oev+Yh!UL$(MJ \N Pressure Treated Lumber Grades, Types, and Uses Explained I'm redoing my deck surface and the lumber yard stocks only prime lumber. H|TnT1}W1yi= hEN4Kg8 bvlbh%gCXcX]NDRnFiUH>.Sl6Vi\(f^j+d}IT#h3Si [j6sG1Pbh`sX9W.+|FdqvJY/nm Sd@{D To limit the entry and spread of quarantine pest through international trade, the International Plant Protection Convention adopted the International Standards for Phytosanitary Measures Guidelines for Regulating Wood Packaging Material in International Trade (ISPM 15). For a better experience, please enable JavaScript in your browser before proceeding. The certification identifies the grade rules used to grade the lumber for example, ALSC is the American Lumber Standard Committee and NLGA is the National Lumber Grades Authority. However, enough gets into the wood to provide a shell of protection that cant be matched with a brush. Application of these grade-marks represents assurance by the manufacturer that their Southern Pine lumber product is properly manufactured and meets the grade requirements of their customers, ensuring consumer confidence in Southern Pine lumber products. CCA is still used for industrial purposes today. MSR lumber is also required to meet certain visual grading requirements. The cores are then dried and ground for the purpose of analyzing the dust by x-ray, titration or gas chromatography methods. The grade mark can include "1W" or "2W" if visually graded to the wane requirements for No.1 or No.2 dimension lumber, respectively. 32524-0915 Office: (850) 434-2611 | Toll Free: (800) 995-7742 How to Figure Out if Wood Has Been Pressure-Treated, and Why It Matters This website is presented by SFPA members, including: 2023 Southern Forest Products Association. Well-manufactured material evaluated by calibrated mechanical grading equipment which measures certain properties and sorts the lumber into various strength classifications. Pressure treated lumber has been infused with preservatives to prevent rot and insect damage. The lumber is stronger than #1 or #2 and is ideal for all structural construction applications. Working with pressure treated lumber is similar to working with untreated planks. Behind the Mark: A Look at the SPIB Treated Wood Inspection Process Largest hole permitted is 1/16". Douglas fir, fir, and hemlock dominate in the western U.S. and Canada, with Douglas fir ranking the strongest of the commonly milled and treated softwoods, while the fir and hemlock are slightly stronger than SPF. 2 in. x 12 in. x 8 ft. #2 Prime or Better Ground Contact Pressure Recommended for moulding and millwork applications. Protecting wood against rot and insects has been done for centuries. Decking materials such as 26 and 5/46 frequently are of better-looking #1 and #2 lumber. The quest for decent boards begins. ), how wood is used also comes down to whether or not it's pressure treated. Listed spans are for wet-service conditions, pressure-treated Southern Pine floor/deck joists, MC > 19%. The charge is considered conforming if each component meets the minimum required retention AND the total, combined minimum retention is met. Wood treated with water-based preservatives for saltwater immersion has significantly higher retention levels than other types and categories. It has anti fungal properties along with a host of other positive features. Appearance is same as D Finish for thicknesses 4" and less and widths 12" and less. Here is another good link a guy posted over on Ins News Inspection Practices for Treated Lumber Products. 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). SPIB is accredited through IAS and maintains ISO certification as both an inspection agency (ISO 17020) and a Laboratory (ISO 17025). It needs to be treated every 2 to 3 years (depending on the environment) to protect it from moisture damage. Email: cspsales@canfor.com. Larger sizes conform to Dense Structural 72 Structural Lumber except for dense grain requirement. To qualify for a SPIB grade-marking license, a mill must have verified credentials in the manufacturing, seasoning, and grading of Southern Pine lumber. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. In most cases, the required depth of penetration is 2.5 or 85% of the available sapwood. The longer the wood is in the pressure chamber, the greater the content of chemical preservatives forced into and retained in the wood. s Different chemicals have been used in the preservative bath, with changes being made to limit health risks to humans and animals. Southern Pine's ease of treatability has made it the preferred species when pressure treatment with wood preservatives is required. Ground contact means anything within 6-inches of the ground or in contact with the ground, foliage, grasses, or over water or wet areas. Both DIYers and building professionals will like these garden and outdoor living ideas and plans. endstream endobj 145 0 obj <>stream Another brand of heat treated wood that can be used for decking. Green unseasoned lumber fresh from the mill is labeled either air-dried (AD) or surface-green (S-GRN). it is damn difficult to tell the differance on the new stuff. Similar in appearance to No.2 Dimension Lumber. Abbreviations for framing-grade softwoods, from strongest to weakest, Doug Fir, D Fir- L: Douglas fir (L=western larch). Lumber structurally graded #1 or #1 & BTR (#1 and better) has a wood grain slope of 1 in 10. A Production Category is defined as a given preservative, specie and retention combination. Southern Pines ease of treatability has made it the preferred species when pressure treatment with wood preservatives is required. Raised floor homes look great and protect homeowners against risks from flooding and subsiding soils. SPIB is able to assist manufacturers achieve and maintain the quality that their customers require by employing highly qualified instructors. Recommended where appearance and strength are a consideration. All Scaffold Plank design values are calculated using ASTM Standards D245 and D2555. It could be HT and then PTd later? 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. PDF Strength Treatability Beauty - Teague Lumber Similar to MCA, the treated wood shouldnt be used in contact with food or animal feed. x 8 ft. #2 Prime or Better Ground Contact Pressure-Treated Lumber is a . has the outer 0-0.6 removed while lumber thicker than 2 (44, 46, 66) has the outer 0-1.0 removed for assay. An easy way to identify the right framing lumber for your needs. While all species are graded at the same four levels of strength and appearance, they are not equally strong. The SPIB grade-mark is recognized as a sign of integrity within the industry. Lumber must be stamped for strength by a trained inspector and identified with a legitimate stamp. 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 Thats why every stick of lumber coming out of a sawmill is appraised by trained inspectors and given a grade stamp. {l@n7gM. #2 Prime grade southern yellow pine. Exciting stuffyou wont want to miss that! The wood grain has a 1 in 8 slope, and there may be bark edge or wane visible. The chemical treatment makes the wood resists insects, mold, mildew, and rot but not moisture-proof. Generally clear, although a. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. Recommended for uses where high strength, stiffness and good appearance are desired.