I noticed that a 2x8x16 is 5 bucks less a board at HD than the quote that a lumber yard gave, but everything the lumber yard quoted is ground contact. My HD carries some ground contact PT. Kiln-dried wood is crackproof but pressure-treated wood is not guaranteed against warping, shrinkage, or splitting. Lumber with more checks, splits, wane, well-spaced larger knots and holes, and a grain slope of 1 in 4 are stamped #3 or construction grade. Follow the link here to complete our Treated Division and Laboratory Customer Satisfaction Survey. Wood preservation also helps conserve forest resources for future generations by greatly reducing the amount of wood needed to replace untreated wood structures prematurely damaged by decay or termites. I have to call this lady back again at COX lumber, I had called her about something else and she was very knowledgable. 3 and Stud 12" wide 2050 1900 1750 1350 1250 1150 1150 975 900 575 1100 1050 900 725 675 600 575 550 525 325 175 175 175 175 175 175 175 175 . It has a grain slope of 1 in 12, may have seasoning checks, and tight, well-spaced knots up to 2-1/4 on a 28. In ancient times the Greeks used olive oil, the Romans tar, and others used pitch or lye. The preservatives provide protection against rot, insects, mold, and fungi, so the wood lasts longer. It is used for all areas of residential construction from load bearing to trim. An economical roof decking which conforms to No. It holds nails, screws, and other fasteners well, and is commonly used in residential, industrial, and commercial construction. Structurally, an SPF #1 28 can be used to span distances of 14-11. &_ePM&dWCh Larger sizes conform to Dense Structural 72 Structural Lumber except for dense grain requirement. Pressure treated wood has many outdoor uses and even is used in some indoor locations, especially where moisture may be a concern. See SPIB Special Product Rules for design values, Appearance is same as B&B Finish for thicknesses of 4" and less. 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 lumber has been non-destructively evaluated by an American Lumber Standard Committee approved machine. Premier structural grades. 2 Dimension Lumber characteristics. Ground contact means anything within 6-inches of the ground or in contact with the ground, foliage, grasses, or over water or wet areas. Excellent for painting or natural finish where requirements are less exacting. This process is required through the plants Internal Quality Control (IQC) for all treated lumber products to be represented as meeting an applicable standard. Not all PT is rated for ground contact. There may be a secondary stamp that identifies the visual grade as Premium or Select A, B, C, or D. Pressure treated lumber also has an end-tag stuck or stapled to one end. Raised floor homes look great and protect homeowners against risks from flooding and subsiding soils. Within all grades, there are planks that will be freer of blemishes and knots and may be called premium. o>>QS-RSnwO4piq4Szh+jkS3NQn(:;^unn^}Q8ws{7sFS There is no structural premium grade, it is strictly a term for bright looking wood free of blemishes or knots. Recommended for uses where high strength, stiffness and good Its moisture content of 19 percent or more makes it inexpensive, but it can move unpredictably as it shrinks and dries. Economical, serviceable grade for natural or painted finish. Pressure treated lumber is divided into different types based on the retention level or amount of preservative retained in the wood after treatment. Pressure treated lumber is available in 1, 5/4, 2, 4, and 6 nominal thicknesses, and widths up to 12. The very basic quality control attributes to evaluate the level of treatment in lumber products is the determination of the depth of preservative penetration and the analysis of preservative retention in a specified, outer assay zone. 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. ehV$W'A The two remaining designations, while not very useful to a homeowner, enable grading agencies to enforce their standards. While all species are graded at the same four levels of strength and appearance, they are not equally strong. The charge is considered conforming if each component meets the minimum required retention AND the total, combined minimum retention is met. Here is a list and description of some of them. Utility grade is #3 grade lumber and has even fewer restrictions regarding knots and defects compared to other grades. Green Building Material . Appearance is same as C Finish for thicknesses of 4" and less and widths 12" and less. SPIB is subject to continual review by IAS to ensure that the laboratory and agency records remain in compliance. The resulting hole will be filled with a treated wood plug to prevent easy access by insects or decay fungi. Like all lumber, the fewer knots, blemishes, or defects, the higher the grade. MCA is an environmentally friendly water-based preservative considered safe for humans and animals and is an alternative to CCA. 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. Tags: None The Duke The grades are stamped prior to the wood being treated, so are the same for both treated and untreated. The quest for decent boards begins. 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 Combination for B&B and C grades; satisfies requirements for. 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. Lumber that is imported or for export requires the designation KD-HT, which means it has been kiln-dried and heat-treated to kill insects. All rights reserved. There are many other uses for pt lumber, including docks, boathouses, sheds, boardwalks, play structures, gazebos, and the list goes on. End-glued, face-glued, and edge-glued Southern Pine in glued assemblies, including stress-rated grades of finger-jointed 2" Dimension Lumber. Recommended for moulding and millwork applications. Exciting stuffyou wont want to miss that! The wood is 43% clear for appearance grading. "Stud" is a fifth designation, meaning it's good for a load-bearing wall. Then I worked to live. 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. The species and grade, however, affect the spacing between supports with #1 often rated for greater spans. It is stamped S-GRN for surface-green or AD for air-dried. For demanding applications, such as interior load-bearing walls, hell pay extra for these stronger grades. Pressure treated wood for ground contact commonly has twice the chemical retention level as above ground rated lumber. But using bigger joists of a cheaper species might save you money without loss of strength. It is most commonly used for sheathing and applications where a fine finish is not required. As a result, we have more grades available to our customers now than at any other time in the history of our company. It's usually stapled to the wood and isn't a requirement to be on the actual stamp. WWPA offers a heat treatment certification program for mills to stamp qualifying lumber with the KD - HT mark. Typically, the first step of a third-party agency audit involves a review of the plants records. This double treated Ground Contact lumber must be used for applications where treated lumber is difficult to maintain, repair or replace. Too much. The cores are then dried and ground for the purpose of analyzing the dust by x-ray, titration or gas chromatography methods. Tell us how were doing! 7nX"a*C[3Dj8[n7;c}W6ynCK2AC?jP0zD'm)a7"tq~eikT):ozU*9Ry"EEy*x|r+Q/!P2GD[0iNvXv4HS-ljs2$r%M$-gi"H"3J2!&IjHnVo " 3Xi^!gc18,WxFWF2O0eMu ~e{lcoJxK]a|rJaxWFX1' g%|M'kL&^JgY9#%T;RnrIwdmdx:rNY%KDn1s,eD8WNjSgvb5OPYn0? .y Z,4zl,RrIl@%<6dWoLMf6Y6J6agH We've downsized and im already overimproved. Framing lumber, unlike money, does grow on trees, so theres always the chance it will have some natural defect, such as a large knot or a long split, that can reduce its overall strength. Similar in appearance to No.2 Dimension Lumber. Resistance to biological decay is 15-25 times higher then of untreated wood It can be used to span greater distances, an SPF SS 28 will reach 15-3. The longer the wood is in the pressure chamber, the greater the content of chemical preservatives forced into and retained in the wood. Here is another good link a guy posted over on Ins News 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. Lumber structurally graded #1 or #1 & BTR (#1 and better) has a wood grain slope of 1 in 10. A walk down the lumber aisle or through a lumberyard will provide some understanding of the differences between #1 and #2 grade pressure treated lumber, or increase your confusion. #1 will have less knots and is typically spec'd for joists and rafters. A very good product to, Highest recognized grade of Finish. Lumber, posts, and ties range from 8 to 16 in length, although longer may be ordered. 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 But not all defects are obvious. Pressure treated lumber comes in a variety of lengths, widths, and thicknesses and from different species of softwood. Dimensional wood from all grades is pressure treated for different uses. 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. It is stronger than #2 or #3 grade lumber. Im building a deck and am getting conflicting info on the difference between #1 and #2 PT. Advances in preservative treatments, environmental management and sustainable forestry practices make treated wood an ecologically sound building material. JavaScript is disabled. The sampling procedures are the same as required by IQC, but re-inspection of a given charge will likely involve only a portion of the total charge. By the end of the article, youll have a better understanding of what different pressure treatments mean, and how to select the grade and type for the use you intend. Trex gets awfully hot also and demands upkeep. But in an existing house where the framing is already dry, hell use more stable, and more costly, KD lumber, or even MC-15 lumber, which has a moisture content of 15 percent or less. Has a better appearance than No.1 Dense Dimension Lumber because of additional restrictions on firm red heart, pith, knots and wane. 2 lumber, which provides good strength at a reasonable price. Pressure treated wood may require several weeks or even months to dry before it will absorb stain or paint. Modern chemical baths and pressurization began in the early half of the 20th century. r Southern Pine's ease of treatability has made it the preferred species when pressure treatment with wood preservatives is required. Kiln-dried wood is lighter, easier to work with, and less likely to split. Pressure-Treated Pine meets the highest grading standards for strength and appearance. Just to second what rjniles just said, the HD guy couldn't be more wrong (imagine that). 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. The wood should be at least 6-inches above the ground, have good air circulation and drainage, and the components can easily be replaced. It may have poor drainage and air circulation, or like a sill plate, is difficult to repair or maintain. Recommended for uses where high strength, stiffness and good appearance are desired. No.2 Prime The treating process includes an initial vacuum to remove the excess moisture and air to aid in the absorption process. These values are modified using procedures shown in "Calculating Apparent Reliability of Wood Scaffold Planks," as published by the Journal on Structural Safety, 2 (1984) 47-57, and updated in 1993. Quality control for treating should be done by an approved inspection agency. Allows well-spaced knots of any quality. Oil-based and creosote treatments are still used but since the preservatives leach out over time and with heat, they are considered too messy or hazardous for residential use. 32524-0915 t|]UE)@Whi`_@z>'}8/p}8c 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. This information will then be combined with previous plant data to determine the plant performance status, as mentioned above. Select grade lumber may have a knothole every 4 and splits can not be longer than the board is wide. SYP holds almost 85% of the U.S. pressure treated market. '\ & Ls30+X61j\e(gV]]M(q9qs)loyM In appearance grade, the planks are 66% clear wood. However, treated lumber may be kiln-dried or wet and will shrink, cup, and warp as it dries. Building codes, inspectors, builders, engineers, and other professionals use the grades to make sure structures are safe for use. has the outer 0-0.6 removed while lumber thicker than 2 (44, 46, 66) has the outer 0-1.0 removed for assay. HD and Lowe's only had lower grade. The unique cellular structure of Southern Pine permits deep and uniform penetration of preservatives, rendering the wood useless as a food source for fungi, termites and micro-organisms. A specific indicator or a specific method is then used to reveal the depth and consistency of preservative penetration. #2 Prime grade has the strength of #2 grade lumber, but will look better, with fewer knots Premium Grade: Use when small knots are desired and appearance is very important. Pressure treated plywood is also available in thicknesses from 1/4 through 3/4. The most noticeable difference may be the price and scarcity of #1 grade lumber. The look of the wood is only important if it is highly visible, such as deck boards, railings, and other visible structural members. Suitable for economical use as sheathing or lathing. He is passionately interested in home improvement, renovation and woodworking. 32524-0915 | Office: (850) 434-2611 | Fax: (850) 434-1290. Machine Stress Rated (MSR) lumber is evaluated by mechanical stress rating equipment. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. For outdoor seating. Inspection Practices for Treated Lumber Products. 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 Office: (850) 434-2611 | Toll Free: (800) 995-7742 |fqqq~^;mffvf-5wV)64O?q30baveaj^-l*)+1$D>Vnm:OP0C#ddu1;r:8wwQKww3)IKLQ. Even if you are on the right track, you will still get run over if you just sit there. Decking materials such as 26 and 5/46 frequently are of better-looking #1 and #2 lumber. When pressure treated it is resistant to decay and termites. #1 will have less knots and is typically spec'd for joists and rafters. The unique cellular structure of Southern Pine permits deep and uniform penetration of preservatives, rendering the wood useless as a food source for fungi, termites and micro-organisms. 32524-0915 The size, location, and the number of knots and other defects, and the slope of the wood grain affect the structural strength of lumber. I did find a post about how the PT label might be cut off the end of a board and the stamp that is left shows HT or kiln dried HT. 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. Details Made from quality Southern Pine lumber Available for . 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. Select Structural (SS) is the highest grade based on strength and durability. The grade-mark must contain the first four items listed below; the fifth item is optional. I guess it is just a regional thing. While each charge is evaluated on its own merit, it is important to note that overall evaluation of plant performance is done over the most recent 20 samples. No 4x or 6x stuff that you might use for skids. As the numbers go up, quality and price go down. All four longitudinal faces must be free of pith and/or heartwood. H\Ak0:b @HZ=8&5FqjfvRut.I/55zb6+]5m&.wgUWm,ZM]nrO=gu${Tu?co2:4 Ill suffer with pt. The amount of moisture in the wood at the time of milling is noted. BOARD GRADES. It could be HT and then PTd later? Before a given charge can actually go into the plants treated inventory to be ready for shipment, it must first be evaluated for penetration. All structural lumber used in the U.S. and Canada requires a stamp identifying it as grade SS, #1, #2, or #3. 1s and Selects, to boot. So, weve covered a lot of ground, but this is not the end, not by a long shot! To qualify for a SPIB grade-marking license, a mill must have verified credentials in the manufacturing, seasoning, and grading of Southern Pine lumber. Eugene has been a DIY enthusiast for most of his life and loves being creative while inspiring creativity in others. Regardless of whether the preservative system is approved through the AWPA or ICC-ES process, the inspection and analytical standards used to monitor the respective quality attributes are delineated in the AWPA Book of Standards. Fax: (850) 434-1290. Timber Grades have similar characteristics to the corresponding grades of dimension lumber. No.2 Non-Dense No. Today, pressure treated lumber for residential use is commonly pine, spruce, or fir that has been immersed in a water-based chemical bath of preservatives. HWW&)@@vaU\P}qtyneG@@x7]Ia8QNoW%T"HH zB-rJ(TG?e)-3"kzvdkMwTXcfb`UML||d]/t@Q1~Q#|30LQA RG vy_rfazhfx NL+XEB7Hb%Y5?_9_h4}EZ^R Z}'a1+&z&j+m}b? z[TWL*baKq @NO{CHpXa2 PkHX%W!AH0aP1 bB z%Oev+Yh!UL$(MJ \N Georgia-Pacific pressure treated lumber is an economical building material that offers all the benefits of wood, plus built-in resistance to decay and termite damage. A joist made of Douglas fir, for instance, will cover a greater span than a hemlock joist of the same size and grade. Email: cspsales@canfor.com. I don't think HD carries it. Suitable for stud uses including use in load-bearing walls. Many DIYers and even some professionals arent familiar with the different types of pressure treated wood and their uses, or that the information is on the end-tag stapled to the board. r Different chemical solutions are used to create treated lumber. *Load duration factors greater than 1.6 shall not apply to structural members pressure-treated with water-borne . Superior product suitable for a wide range of uses including shelving, boxing, crating, and form lumber. Identifies the accredited agency or association that oversees grading accuracy, in this case the National Lumber Grades Authority. Good, serviceable sheathing; usable for many economical applications without waste. The label will show w/CE which means with color enhancement. Generally, the charge is accepted if at least 80% of the cores (16 of 20) meet the minimum depth of penetration. We work together with our subscribers to provide consistent, accurate inspection data for their use to improve product quality, meet Building Code specifications, enhance service life, and promote industry sustainability. Modern science has developed preservative treatments that are odorless and colorless, and leave the wood paintable and dry to the touch. From the cedar shakes, facia, and trim of a house to the sill plate and wooden foundations or supports, pressure treated wood is common in residential construction. D Fir-L or Doug Fir for Douglas fir or larch (L), H-F, Hem-fir, or Hem for hemlock-fir or hemlock. It is used to build exterior stairs, for posts, sheathing, siding, porches, decking, and railings too. My 2-Story Addition Build in Progress Link . 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. Wood Packaging Material (WPM). Green unseasoned lumber fresh from the mill is labeled either air-dried (AD) or surface-green (S-GRN). The recommended type of treated wood for in-ground use is UC4B and UC4C; UC4B has a higher retention level than lower graded types, and UC4C has even more. r . Admits pieces below a No.3 grade which can be used without waste, or which contain less than 25% waste by cutting. In appearance, it is at least 57% clear of defects. Largest hole permitted is 1/16". Luckily, a more budget-friendly option of pressure treated lumber grades is available. This website is presented by SFPA members, including: 2023 Southern Forest Products Association. All Scaffold Plank design values are calculated using ASTM Standards D245 and D2555. %\dbZ!1T09 F.#3s3+VdIr9f>LQOL7-1K)s+}OY'\awt_D FfhWnK8R5 @^L;@e\;7&8/O_PL;V@SqqZEy?9S=Z_{uh@fx:DSs=8! b+! The wood is commonly used for light construction or framing where it isnt visible, or for bracing, packaging, and shipping purposes. Treated wood is made from strong evergreen species making it suitable for most building projects. CCA is still used for industrial purposes today. Treatment with preservatives protects wood that is exposed to the elements, in contact with the ground or subjected to high humidity. For appearance, it must be 29% clear of defects. 6^,fniSgdc24.L7` b. Charges that are documented as conforming for penetration and retention by IQC results are subject to re-inspection by the agency to verify penetration and retention. Being 80% or more clear of defects, it is often used for cabinetry, furniture, and trim. Application of the product requires pressure treatment by an approved treating process and preservative for. MC-15 identifies lumber as having 15% or less moisture content. Our next Blog will take the samples to the SPIB laboratory for analysis to determine if retention values are conforming. it's primarily 2x planks. Pressure treated to a Ground Contact retention of either ACQ or CA Chemical preservative. Treated wood is made from strong evergreen species making it suitable for most building projects. Many pieces included in this grade would qualify as No.2 except for a single limiting characteristic. Application of the product requires pressure treatment by an approved treating process and preservative for marine usage. Similar to MCA, the treated wood shouldnt be used in contact with food or animal feed. Maximum spans were calculated using design . Gives the trademark or number of the mill of origin. The wood weathers better than untreated wood and wont gray or discolor as quickly. Dense Select Structural Select Structural. Grademarks. 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). Since 1960, lumber in North America has been graded at lumber mills by trained inspectors for structural strength and quality control. One even identifies its pressure treated pine fence boards as D & better so its appearance has small pin knots and some other blemishes. 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. Pressure treated lumber commonly is end-tagged with an information label before leaving the plant. This service is intended to assist mills in supplying products that meet the standards for wood packaging 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. Lumber that is 2 or less in thickness (24, 26, 5/4 decking, etc.) 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. Pro Note: All copper-based wood preservative solutions will corrode unprotected iron and steel brackets and fasteners. maple, oak, birch, etc. SPIB is accredited through IAS and maintains ISO certification as both an inspection agency (ISO 17020) and a Laboratory (ISO 17025). IMO when buying PT for above ground use, quality and appearance is what counts. Design values only apply to utility lumber that is 4 wide. The solution protects against insects, mold, mildew, fungus, and rot, and turns the wood a light brown hue. ? May have to look at Home Depot closer, since they carry #1 above ground. CCA is a mixture of chromium, copper, and arsenic that turns wood green. Box 10915 Pensacola, Fl. Termawood vapor-stabilization technology is a patented wood heat treatment technology, utilizing a natural thermochemical reaction and steam at temperatures of 230-240 C without ANY chemical additives. Number 2 grade lumber often has more knots and blemishes than #1 grade but may be clear enough on one face to be deemed select or premium. Abbreviations for framing-grade softwoods, from strongest to weakest, Doug Fir, D Fir- L: Douglas fir (L=western larch). Stud is a fifth designation, meaning its good for a load-bearing wall. A Production Category is defined as a given preservative, specie and retention combination. http://www.ecoprem.com/pdf/ecoprem_wood_technology_competitive_analysis.pdf. 2, and No. Protecting wood against rot and insects has been done for centuries. There are different types of treatment and lumber grades for different uses. This defect is exacerbated in the presence of Spi-1 haplo-insufficiency (Spi1+/- SpiB-/-). the Southern Pine Inspection Bureau (SPIB) Standard Grading Rules for Southern Pine Lumber. Wood is a sustainable product, making it . x 12 in. r Raised floor homes look great and protect homeowners against risks from flooding and subsiding soils. Both DIYers and building professionals will like these garden and outdoor living ideas and plans.

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