This process creates a more durable material. Copyright© Ever wonder what all those letters and numbers mean on a piece of lumber? The lumber industry goes to great lengths to make sure consumers and commercial builders understand exactly what theyâre buying from the big box store or lumber yard by putting this info on each piece that heads out the door. That being said, itâs hard to know if the wood you are looking at is pressure treated or not. All information is provided "AS IS." There will be several different types of pressure-treated lumber, and they all have different application purposes. The lumber industry goes through massive efforts to make sure whatâs in the store or lumber yard meets your needs. trusses, floor or ceiling joists or rafters. There are a number of factors to consider depending on your projectâ we recommend reading this article to find out whatâs right. #1 lumber is usually used for applications where appearance matters, while #2 lumber is used where it will not be visible on the â¦ This code tells you what category the wood is, and what it should be used for. 1. This is going to be the most important part of the stamp. Some mills put their family name right on the stamp because these families are proud to put their name on every product. x 10 ft. Pressure-Treated The 2 in. It's best used in interior construction. 3. Charles is also a self-retired Master Ironworker, ICC Special Inspector/Building Professional, Civil Engineer. Grade: Number 2 (in this case it's a minimum grade, as in "#2 or better") Grade certified by: Canadian Lumber Standards Agency; Produced at: NLGA mill designation 124; The "Hampton Premium" stamp appears on the same piece of lumber as the mill stamp above (the one that reads "NLGA No 2," among other things). Sometimes, if the lumber has been pressure treated for outdoor use, youâll see the letters âPTâ or âGCâ either on the stamp or on the shelf. This is going to be the most important part of the stamp. : Sometimes, if the lumber has been pressure treated for outdoor use, youâll see the letters âPTâ or âGCâ either on the stamp or on the shelf. It also indicates the lumber grade, wood species and any other pertinent information. UC3B is best for decking, railing, and fences as it's treated to withstand prolonged moisture. The American Wood Protection Association (AWPA) is a non-profit organization which promulgates voluntary wood preservation standards. Use #2-grade lumber when appearance is not crucial to your project. For example. TPâs expertise includes Engineered Wood Products, Export Wood Packaging â ISPM15, Glulam, Log Homes, Panels & Plywood, Truss, Treated Wood, Lumber Grading including Transient Lumber, Wood Pellets and Utility Poles. x 4 in. Safer Variety of Pressure Treated Wood One of the safer varieties of pressure treated wood of recent times is the â¦ Though it's informative, mill stamps leave an unsightly stain on your lumber. You probably aren't going to be familiar with all the inspection agencies that deal with lumber, but you should at least verify the lumber has been inspected. x 10 ft. Hem-Fir Brown Stain Ground Contact Pressure-Treated Lumber (Actual: 1.5 in. The treated lumber I use seems very wet, but it carries a grading stamp that lists the moisture content at 19%. Mill. Grades are designated by Fb and E. Framing lumber, unlike money, does grow on trees, so there's always the chance it will have some natural defect, such as a large knot or a long split, that can reduce its overall strength. Mill. The retention level will also give you an idea of where the lumber is best used. UC2 will be the lowest grade of pressure-treated lumber, and this means it's protected from the weather but still subject to moisture damage. 3. This code tells you what category the wood is, and what it should be used for. 2 in. Here are a few tips to help look up a millâs location to see where your lumber was made. Species, grade, moisture content, certification mark, and mill are the five things youâll see on a lumber stamp. Charles is a highly experienced equipment operator of Bobcats, backhoes, D-9 front end loader, hydraulic cranes, GRT piledriver, concrete saws, regular and extended reach forklifts, and he has operated a working barge on Tampa Bay and the Intercoastal Waterway as a Marine Construction sub-contractor building custom docks. The grade marks are stamped on the lumber and appear near the ends of the product: Most grade stamps, except those for rough lumber or heavy timbers, contain 5 basic elements: WWPA certification mark - This symbol indicates that lumber bearing this trademark has been graded under the supervision of Western Wood Products Association. The 2 in. Every mill has a story. 1. x 4 in. Reading a lumber stamp is kind of like reading the ingredients label on the food you eat. Use when both strength & appearance are important. Grade 3. Contemporary pressure-treated wood should be marked as treated â¦ For example, Home Depot sells both KD-HT pressure treated and non-pressure treated grade 2 lumber. Charles is an Expert Reviewer for Doityourself.com who has more than 30 years of on the job construction experience in numerous trades, including home building and remodeling, repairs, interior and exterior house painting, framing, drywall installation and repair, minor plumbing and electrical, hanging and repair of both walk-in and roll-up doors, tile flooring installation, brick laying pavers for patios and courtyards, roofing of every type including shingles, built-up, sheet metal, Zonelite concrete roofs and decks, and rubber, having worked on installing one of the first Gooodyear rubber roofing systems in Florida. When selecting wood, look for its grading stamp because different lumberyards sometimes use different names for the same grade. More importantly, on each piece of lumber, theyâll learn critical information to make sure the material is the exact right fit for the job. Website operating So you can build with confidence and get the job done right. Grades refer to the quality, strength and appearance of the wood. Grade markings indicate the species of wood and structural design parameters. Boards with fewer knots or other cosmetic blemishes get a higher grade, but a premium grade comes with a higher price. suggestions. For example, you could see that âstickâ of Southern Yellow Pine was made by mills that have been run by the same family for generations in places like Ripley, MS or Bristol, FL. Removing the manufactures grade stamp from pressure treated decking or any type of lumber, isnât to difficult at all. The grade of the wood, there are a number of grades,Select (the best quality and strongest) to Utility (the lowest quality and leaststrength). Weâre all about the use of Southern Yellow Pine for projects big (really big) and small. Framing lumber, unlike money, does grow on trees, so there's always the chance it will have some natural defect, such as a large knot or a long split, that can reduce its overall strength. Look for a grade stamp that says "ground contact" or indicates a treatment depth of 0.40 or greater. Poke around on the site and find out all the reasons why itâs awesome. The lumber association with a mark or logo. Grade 3. Lumber mills ink-stamp each board with a lumber grade. Using Galvanized Nails With Pressure Treated Wood. Itâs usually stapled to the wood and isnât a requirement to be on the actual stamp. x 120 in.) Pressure-treated lumber grades are assigned based on appearance. UC4A is similar but can be used in applications where the wood will be underground as well, such as privacy fence posts. The stamp will include a seal that identifies which certified agencies' rules were used in grading the lumber as well as identifying the mill where the lumber was processed. So we can help you choose the right wood for your specific project. Tools needed to complete the task: 1. 4. Orbital sander. It is recommended that the buyer specify pressure-treated wood bearing ink-stamped quality marks and/or plastic end tags denoting the material was produced under supervision of an independent inspection agency accredited by the ALSC. Charles has vast experience in housekeeping in private home, medical facilities, business offices, restaurant, heavy industrial, and hotel-motel settings. The moisture content at the time of milling, this rangesfrom (AD) air dried or (S-GRN) surface green, with a moisture content of 19% ormore to (KD) kiln â¦ Identify pressure-treated lumber by scent, stamps and appearance. The material species, (SYP)Southern Yellow Pine, (DFir) DouglasFir, (RD) Redwood, etc. To ensure our content is always up-to-date with current information, best practices, and professional advice, articles are routinely reviewed by industry experts with years of hands-on experience. Since 2013. Lumber bearing an FSC stamp has been approved by that organization.