H\n0l/$x\$-"-! Helping You to Do It Yourself! 7nX"a*C[3Dj8[n7;c}W6ynCK2AC?jP0zD'm)a7"tq~eikT):ozU*9Ry"EEy*x|r+Q/!P2GD[0iNvXv4HS-ljs2$r%M$-gi"H"3J2!&IjHnVo " 3Xi^!gc18,WxFWF2O0eMu ~e{lcoJxK]a|rJaxWFX1' g%|M'kL&^JgY9#%T;RnrIwdmdx:rNY%KDn1s,eD8WNjSgvb5OPYn0? .y Z,4zl,RrIl@%<6dWoLMf6Y6J6agH Most of this new treated lumber looks untreated as compared to the old green stuff, I did learn that they add color to some of it to try and make it look more like treated. It is not as strong as the other grades and is commonly used for where it wont be visible, and light framing purposes such as bracing, crates, and pallets. Other than the features that depend on the type of tree the wood came from (i.e. it is damn difficult to tell the differance on the new stuff. %PZqI]Hx(or3'Z1Ld8&.u$eIJ{\,a(1I4;^?dB;|+abd` wX{M\f/=#S8NS6~#|oNQ5 Lj|< W-&A^N'*6|t79Ir8:]3Y -Q/A9h.BBvX >A3s*E3_2pS\5a 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. 3 (lowest strength, not pretty). 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. Although there may appear to be many differences in what options to use for your next project, there may be more similarities than you know. 32524-0915 | Office: (850) 434-2611 | Fax: (850) 434-1290. D Fir-L or Doug Fir for Douglas fir or larch (L), H-F, Hem-fir, or Hem for hemlock-fir or hemlock. Stud is a fifth designation, meaning its good for a load-bearing wall. The resulting hole will be filled with a treated wood plug to prevent easy access by insects or decay fungi. The stapled on label will have w/CE to indicate with color enhancement, she is correct. 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. 1, No. Working with pressure treated lumber is similar to working with untreated planks. The treated wood is then taken to the yard to dry naturally or to the drying kilns before shipping to the retailer. I didn't ask but I doubt the deck boards and 2x are ground contact which deals with the amount of preservatives used on the lumber. Species and Sizes Of Pressure Treated Wood, Different Kinds of Softwoods That Are Pressure Treated, Tips for Working with Pressure Treated Wood, Types of Pressure Treated Lumber and Where to Use Them, Sill & bottom plates, damp locations, basement framing, bathrooms, flooring, baseboards, Exterior Above Ground, Coated with Rapid Runoff, Exterior Above Ground, Uncoated or Poor Runoff, Cedar shakes, exterior stairs, joists, beams, decking, railings and fence boards/pickets, any wood within 6 of soil & vegetation, Fence, deck & structural posts, ledgers, retaining walls, garden boxes, any wood within 6 of soil, vegetation, or freshwater, or poor air circulation, As with UC4A plus posts set into the ground, retaining walls, wood foundations & supports, freshwater contact, saltwater spray, garden & utility posts, Pilings or wood in direct installation in soil, gravel, concrete, freshwater, or extreme weather exposure, Contact & immersion in cold ocean waters north of Long Island & San Francisco, docks, piers, wharves, shore walls, boardwalks, & buildings, Contact & immersion in warmer ocean waters south of San Francisco and Long Island, and similar to UC5A, Contact & immersion in warm Gulf Coast waters & south of Georgia, and similar to UC5A, Interior construction, no ground or moisture contact, fire partition walls, kitchens, hallway & stairwell framing, Exterior construction, exposure to weather but not ground contact, porches, exterior stairs, window treatments, Tight and well-spaced, and no larger than 2-3/4 on a 28, Well-spaced and no larger than 3-1/2 on a 28, 1/4 the thickness and 1/4 the width full length, or not greater than 1/2 the thickness or 1/3 the width for 1/4 of the length, 1/3 the thickness and 1/3 the width full length, or not greater than 2/3 the thickness or 1/2 the width for 1/4 of the length, Checks separation across or through growth rings due to seasoning, Unlimited surface seasoning checks with through checks limited to splits, Skips surfaces that were missed or failed to clean, Maximum of 5% of the plank or 2 or less in length, Shake lengthwise separation through or between growth rings, Limited as splits if through or 2 long on the surface only, Limited as splits at ends if through or 2 long if well separated, or maximum of 3 or 1/4 the length if surface only, Warp bow, crook, cup, twist, or any combination, Sapwood stained or firm heart or red heart stain, No limit to sapwood stained or firm heart stain or red heart. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. 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. 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. Similar to MCA, the treated wood shouldnt be used in contact with food or animal feed. BOARD GRADES. has the outer 0-0.6 removed while lumber thicker than 2 (44, 46, 66) has the outer 0-1.0 removed for assay. Select Structural (SS) is the highest grade based on strength and durability. 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. The stamp identifies the wood species, grade, moisture content, inspection organization, and the mill it came from. It appears as a new technology from Canada. This double treated Ground Contact lumber must be used for applications where treated lumber is difficult to maintain, repair or replace. Minimum retention values are specified in the AWPA BOS for those preservative systems listed under AWPA and in the various Quality Manuals for those systems specified by a given ESR. But not all defects are obvious. While all species are graded at the same four levels of strength and appearance, they are not equally strong. Grade based on No.1 Dimension Lumber except wane and other characteristics that affect appearance are limited. (See Wood Code, below). SPIB performs these functions through the accreditation of the American Lumber Standard Committee (ALSC) as appointed by the Department of Commerce. See Table 2 or SPIB Grading Rules for design values. An indicator is used to identify the untreatable, heartwood sections of the 20-core sample (Sapwood is the outer portion of the log; heartwood is the innermost portion of the log and is rarely capable of accepting preservative). Pressure-Treated Pine meets the highest grading standards for strength and appearance. Free of pitch pockets, pitch streaks and medium pitch on one wide face, but otherwise conforms to No.1 Dense or No.1 Dimension Lumber. vX63t$i"CIdxGFG(bpX@F2@2@pGG1Z@? Wood packaging material made of unprocessed raw wood is recognized as a pathway for the introduction and spread of pests. 2 x 6 x 16' Prime Pressure Treated #2 Lumber *BUY IN BULK* AND SAVE endstream endobj 145 0 obj <>stream Recommended where high strength, stiffness and good appearance are desired. SYP Lumber Sales. Follow the link here to complete our Treated Division and Laboratory Customer Satisfaction Survey. Pressure-treated wood can dry in about 1 month, whereas fresh wood provides an environment where fungi and bacteria produce rot and insects infest. I am finding lots of info about how HT (heat treated lumber) is required for packaging, pallets etc to prevent the spread of some WDO across the world but can not find anything concrete on whether or not it is suitable for a deck. There are many other uses for pt lumber, including docks, boathouses, sheds, boardwalks, play structures, gazebos, and the list goes on. This defect is exacerbated in the presence of Spi-1 haplo-insufficiency (Spi1+/- SpiB-/-). Structurally, an SPF #1 28 can be used to span distances of 14-11. Thanks to all, ill never outlive ground contact or not, but maybe for the kids ill go with the lumber yard ground contact since they did the quote and its not much more dough. No matter what it is called or tagged, it should bear a stamp on the wood surface identifying it as SS, #1, # 2, or #3. Pressure treated lumber commonly is end-tagged with an information label before leaving the plant. Then I worked to drink. The stamps on lumber do not always include everything, the PT data is usually just on one of those plastic tags stapled on the end of the board which gets cut off or removed. |fqqq~^;mffvf-5wV)64O?q30baveaj^-l*)+1$D>Vnm:OP0C#ddu1;r:8wwQKww3)IKLQ. This Old House general contractor Tom Silva usually buys stacks of No. It often links with the logo or symbol of the association that oversees the grading at that mill. Our next Blog will take the samples to the SPIB laboratory for analysis to determine if retention values are conforming. CCA is comprised of arsenic, chromium and copper. Building codes, inspectors, builders, engineers, and other professionals use the grades to make sure structures are safe for use. Good, serviceable sheathing; usable for many economical applications without waste. #1 #2 prime etc deals with the quality of the board. Different chemical solutions are used to create treated lumber. I do like to cover the tops of the joists and beams with ice and water shield. Pressure treated wood for ground contact commonly has twice the chemical retention level as above ground rated lumber. Structurally, an SPF #3 28 can be used to span distances of 12-4. All rights reserved. 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. Grademarks | SPIB | Southern Pine Inspection Bureau '\ & Ls30+X61j\e(gV]]M(q9qs)loyM PDF Reference Design Values for Visually Graded Southern Pine Dimension The SPIB Treated Wood Quality Audit Program provides a customized third-party quality control program to help Treated Wood producers meet industry-approved standards. The table below identifies the main differences. 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. Myrtle Beach, SC. As I understand it, the grade refers to the number of knots in a given length. s Recommended for general framing purposes. Similar in appearance to No.1 Dimension Lumber. Ultimately, our program provides an economically sound and standardized method of treatment, evaluation, labeling and certification for producers, specifiers and end users of pressure treated wood products. Here is a list and description of some of them. If the wood is #1, it is stamped #1. Some mills may then identify it A, B, C, or D for appearance based on how clear or free it is of knots and blemishes. 139 0 obj <> endobj 153 0 obj <>/Filter/FlateDecode/ID[]/Index[139 24]/Info 138 0 R/Length 80/Prev 801267/Root 140 0 R/Size 163/Type/XRef/W[1 2 1]>>stream As a result, we have more grades available to our customers now than at any other time in the history of our company. Similar in appearance to No.2 Dimension Lumber. The wood weathers better than untreated wood and wont gray or discolor as quickly. SPIB is subject to continual review by IAS to ensure that the laboratory and agency records remain in compliance. Knots must be well spaced and tight, so they wont fall out, and no larger than 2-3/4 in a 28. The cores are removed by a specialized boring bit on the edge of the lumber, near the mid-length of the piece. The quest for decent boards begins. There is no standard for appearance grading and select or premium could be #1 or #2 structural grade, it just increases the cost to the consumer for better wood. Modern science has developed preservative treatments that are odorless and colorless, and leave the wood paintable and dry to the touch. As you look through our website, you will recognize the many different grades of lumber we stock. The look of the wood is only important if it is highly visible, such as deck boards, railings, and other visible structural members. Box 10915 Pensacola, Fl. Details Made from quality Southern Pine lumber Available for . www.strongtie.com/products/ptwoodfaqs.html, FAQ: Pressure-Treated Wood | Simpson Strong-Tie. She said that some of the new PT looks so much like untreated they have to add a color enhancer to it. Best appearance (compared to Standard) High-quality lumber Smaller and fewer knots Standard Grade: Use when a rustic appearance is desired. 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. Green unseasoned lumber fresh from the mill is labeled either air-dried (AD) or surface-green (S-GRN). Hi Raymond, it looks like this 2 in. Select grade lumber may have a knothole every 4 and splits can not be longer than the board is wide. Using expensive wood that is naturally resistant may not fit the budget. The amount of chemical retained determines how resistant the lumber will be. hb```"/VI ealR]2L 7] u~m>^;+g=ll&Cv)!N&%5g~IK1 Generally sound and tight-knotted. Superior product suitable for a wide range of uses including shelving, boxing, crating, and form lumber. Green Building Material . Its moisture content of 19 percent or more makes it inexpensive, but it can move unpredictably as it shrinks and dries. 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. Each American Lumber Standard Committee (ALSC) certified agency has its own registered grade-mark. Reasonably clear, but permits limited number of surface checks and small tight knots. Grade based on No.1 Dimension Lumber except wane and other characteristics that affect appearance are limited. 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). Im not going to struggle with huge bows and twisting. (KD-HT means the wood was also heat treated to kill pests, a requirement for imported lumber.) (@ 2=h/jO,,5rB G 5~7 ol}E|Cf6zg/I !^ endstream endobj 144 0 obj <>stream Spi-1 and Spi-B control the expression of the Grap2 gene in B cells Structurally, an SPF #2 28 can be used to span distances of 14-11. We think it is only appropriate to attempt to describe these grades for your reference to help you better understand what you currently stock and what is additionally available to you and your customers. KD and KD-HT are often more expensive and less susceptible to warping and shrinkage. The solution protects the wood from rot, insects, fungus, mold, and mildew, and also turns the wood a brown tone. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. There are many questions about the different treated wood products in our market today. Lumber that is 2 or less in thickness (24, 26, 5/4 decking, etc.) Treating cylinders vary in size and length and a single charge of lumber can contain anywhere from 8,000 to 25,000 board feet of lumber. Generally clear, although a. For a better experience, please enable JavaScript in your browser before proceeding. This Old House general contractor Tom Silva usually buys stacks of No. Grade Descriptions - Southern Pine Overall plant evaluation is done by means of separating and inspecting all of the different Production Categories to help identify very specific areas of concern, if any exist. It needs to be treated every 2 to 3 years (depending on the environment) to protect it from moisture damage. MSR lumber is distinguished from visually stress graded lumber in that each piece is non-destructively tested. Follow along as we decode the stamp and show you how to get the most lumber for your money. 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. Quality control for treating should be done by an approved inspection agency. Dimensional wood from all grades is pressure treated for different uses. 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 . However, it shouldnt be used where it comes in contact with food or animal feed. Recommended where appearance and strength are a consideration. Grade based on No.2 Dimension Lumber except wane and other characteristics that affect appearance are limited. Maximum spans were calculated using design . One even identifies its pressure treated pine fence boards as D & better so its appearance has small pin knots and some other blemishes. Specification Guidelines - Southern Pine Recommended for uses where high strength, stiffness and good The longer the wood is in the pressure chamber, the greater the content of chemical preservatives forced into and retained in the wood. The SPIB grade-mark is recognized as a sign of integrity within the industry. Outside building projects and even some damp areas inside require wood that is resistant to moisture damage. No.1 Prime No.2 Prime H ighqu al ty, m ed nc r sfo . It is most commonly used for sheathing and applications where a fine finish is not required. Pressure treatment doesnt make the wood stronger or weaker, just more resistant to insect and moisture damage. 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. No. Not all PT is rated for ground contact. 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. The best pressure treated wood for decks is Select, #1 or #2 grade wood. 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. JavaScript is disabled. This process is required through the plants Internal Quality Control (IQC) for all treated lumber products to be represented as meeting an applicable standard. Borates are sodium salts used in water-based pressure treatment solutions. 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. Lumber must be stamped for strength by a trained inspector and identified with a legitimate stamp.
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