A high-pressure period is then undergone to push the preservative deep into the wood. (KD-HT means the wood was also heat treated to kill pests, a requirement for imported lumber.) While most residential pressure treated lumber is deemed safe for use, dust and particles can still be harmful. Recommended for uses where high strength, stiffness and good appearance are desired. Used for such purposes as studding, blocking, plates, bracing and rafters. As I understand it, the grade refers to the number of knots in a given length. MSR Scaffold Plank is available 2"-thick only. Got the ledger #2 GC from the lumber yard. 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. In appearance, it is at least 57% clear of defects. The wood is commonly used for light construction or framing where it isnt visible, or for bracing, packaging, and shipping purposes. 1, No. 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. An easy way to identify the right framing lumber for your needs. #1 #2 prime etc deals with the quality of the board. Tom saves money by ordering S-GRN wood when framing a new house, figuring that all the wood will air dry at the same pace. 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. Not all PT is rated for ground contact. 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. The type identifies the amount of chemical retention which in turn determines how or where to best use the lumber. SPIB is subject to continual review by ALSC to ensure that the laboratory and agency records remain in compliance. Pressure treatment is an affordable alternative to expensive naturally rot-resistant lumber. 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. In this article, well explain pressure treated (pt) lumber, the different types and uses, and how it is graded. 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 Tel: 843-236-9399. However, the tight grain also makes it less receptive to pressure treatment. Has a better appearance than No.1 Dense Dimension Lumber because of additional restrictions on firm red heart, pith, knots and wane. One even identifies its pressure treated pine fence boards as D & better so its appearance has small pin knots and some other blemishes. The grade of lumber is noted SS, #1, #2, #3, or STUD and the price reflects the quality. The stamp identifies the wood species, grade, moisture content, inspection organization, and the mill it came from. 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. |fqqq~^;mffvf-5wV)64O?q30baveaj^-l*)+1$D>Vnm:OP0C#ddu1;r:8wwQKww3)IKLQ. The process is similar for treating milled lumber, plywood, posts, or utility poles against rot and insects. A superior decking grade, suitable for plank floor where face serves as finish floor. Thats why every stick of lumber coming out of a sawmill is appraised by trained inspectors and given a grade stamp. Ok, now that weve got that covered, lets go to the treating plant! To qualify for a SPIB grade-marking license, a mill must have verified credentials in the manufacturing, seasoning, and grading of Southern Pine lumber. Use tar paper or bituminous tape to protect metal brackets and ho-dipped galvanized or stainless-steel fasteners, or those specially coated to prevent corrosion by wood preservative chemicals. For a better experience, please enable JavaScript in your browser before proceeding. Even if you are on the right track, you will still get run over if you just sit there. Industry quality-control standards for the manufacture and preservation of Southern Pine ensure long-term performance and minimize environmental impact. 6^,fniSgdc24.L7` b. Since 1960, lumber in North America has been graded at lumber mills by trained inspectors for structural strength and quality control. Modern science has developed preservative treatments that are odorless and colorless, and leave the wood paintable and dry to the touch. 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. Gives the trademark or number of the mill of origin. 2 lumber, which provides good strength at a reasonable price. Suitable for stud uses including use in load-bearing walls. Lumber that is 2 or less in thickness (24, 26, 5/4 decking, etc.) Different types of treated lumber are used in many aspects of residential, commercial, and industrial construction where moisture or ground exposure may occur. IQC results of treatment for each charge are required to be documented in the plant records to correspond to the individual charge reports. This service is intended to assist mills in supplying products that meet the standards for wood packaging 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 Pressure-Treated Pine meets the highest grading standards for strength and appearance. Largest hole permitted is 1/16". Good-quality sheathing, fencing, shelving and other general purpose uses. A very good product to, Highest recognized grade of Finish. Many pieces included in this grade would qualify as No.2 except for a single limiting characteristic. More knots than Premium grade };hax{Hk[qMkhpcge/*b7_W?!r*uEkGhKZS$_~Zuzrxx xo)>kf}sgn^k4$=!i[*5X,y-ZrZ1 I% I?S?C# M7nsp:{&|nn1###M&d lB6-M&d lB6M&d ; IS)VY23xe@YY_Q_Y_Q_Y_Q_Y_Q_Y_Q_u_BNt/;(.? Structurally, an SPF #1 28 can be used to span distances of 14-11. Tell us how we're doing! Another brand of heat treated wood that can be used for decking. There are many questions about the different treated wood products in our market today. An economical roof decking which conforms to No. Recommended for construction where high strength, stiffness and good appearance are desired. r It is used for all areas of residential construction from load bearing to trim. You Save $3.39 with Mail-In Rebate. Stud is a fifth designation, meaning its good for a load-bearing wall. However, treated lumber may be kiln-dried or wet and will shrink, cup, and warp as it dries. Pressure treated lumber is available in 1, 5/4, 2, 4, and 6 nominal thicknesses, and widths up to 12. Pressure-treated wood can dry in about 1 month, whereas fresh wood provides an environment where fungi and bacteria produce rot and insects infest. Office: (850) 434-2611 | Toll Free: (800) 995-7742 It needs to be treated every 2 to 3 years (depending on the environment) to protect it from moisture damage. The wood should be at least 6-inches above the ground, have good air circulation and drainage, and the components can easily be replaced. Recommended for general framing purposes. 32524-0915 . two existing joists with this stamp are not dark in color like i think pressure treated wood should be I used to live to work. Eugene has been a DIY enthusiast for most of his life and loves being creative while inspiring creativity in others. Review this helpful illustration showing the proper application of pressure-treated Southern Pine materials for a variety of projects around the home. ACQ is another environmentally safe preservative composed of soluble copper and either quaternary ammonium alkyl or substitute compounds. 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. For additional information on the proper handling and storage of pressure-treated Southern Pine materials,click here. I grabbed an exerpt here and there and put it all together, for I was on a lot of different sites and suppliers. Those stacks also include some No. The amount of moisture in the wood at the time of milling is noted. Use in-ground type lumber where there is a greater risk of deterioration or severe environmental exposure, or for critical structural components like foundation posts, exposure to fresh or groundwater, or utility poles. So, weve covered a lot of ground, but this is not the end, not by a long shot! H|TnT1}W1yi= hEN4Kg8 bvlbh%gCXcX]NDRnFiUH>.Sl6Vi\(f^j+d}IT#h3Si [j6sG1Pbh`sX9W.+|FdqvJY/nm Sd@{D My electrical answers are based on 2017 NEC, you may have local amendments. #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. 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. Each charge sheet is reviewed to verify that all IQC requirements have been met and properly documented. This information must include the charge number, treatment date, products treated, tally, cycle parameters and preservative solution strength for each charge. There are different types of treatment and lumber grades for different uses. 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. s Within all grades, there are planks that will be freer of blemishes and knots and may be called premium. The type and dimension influence the strength of the timber. Some types of timber have natural abilities while others need a boost. Some on this forum think that is a waste of time, but I think it extends the life of the lumber. Check sources of supply for available grades and sizes. 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 grade mark can include "1W" or "2W" if visually graded to the wane requirements for No.1 or No.2 dimension lumber, respectively. Generally, the charge is accepted if at least 80% of the cores (16 of 20) meet the minimum depth of penetration. The solution protects the wood from rot, insects, fungus, mold, and mildew, and also turns the wood a brown tone. Douglas fir has a tight close grain cell structure making it stronger and less prone to warping and twisting than pine. Pressure treated wood can also be stained or sealed to enhance its color and for added protection. A specific indicator or a specific method is then used to reveal the depth and consistency of preservative penetration. It has nothing to do with the wood being pressure treated (PT) at all. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. For demanding applications, such as interior load-bearing walls, hell pay extra for these stronger grades. The grade mark can include "1W" or "2W" if visually graded to the wane requirements for No.1 or No.2 dimension lumber, respectively. Pressure treated lumber comes in a variety of lengths, widths, and thicknesses and from different species of softwood. Working with pressure treated lumber is similar to working with untreated planks. The lumber has the structural strength it is graded with but has fewer blemishes or knots, so a better appearance. The retention level is measured in pounds of chemical per cubic foot of wood (pcf). 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). Similar in appearance to No.1 Dimension Lumber. SPIB is committed to assisting our customers meet their treatment goals in the most cost-effective means possible. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. The accredited inspection agency, manufacturer, and plant are also commonly on the label but may be available in the bar code. Most lumber in my area is listed as Prime or Premium depending on the box store and is stamped #2 or #2 & BTR. The two remaining designations, while not very useful to a homeowner, enable grading agencies to enforce their standards. Got your hard hat and high-vis vest? Fax: (850) 434-1290. 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. SPIB is able to assist manufacturers achieve and maintain the quality that their customers require by employing highly qualified instructors. r When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 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 Quality control for treating should be done by an approved inspection agency. Its appearance ranking is 80% or better clear of defects. Grade based on No.1 Dimension Lumber except wane and other characteristics that affect appearance are limited. The longer the wood is in the pressure chamber, the greater the content of chemical preservatives forced into and retained in the wood. Borates are sodium salts used in water-based pressure treatment solutions. The size, location, and the number of knots and other defects, and the slope of the wood grain affect the structural strength of lumber. All rights reserved. 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. Southern Pine's ease of treatability has made it the preferred species when pressure treatment with wood preservatives is required. Lumber is stamped after it is milled and prior to being pressure treated. Good, serviceable sheathing; usable for many economical applications without waste. Kiln-dried wood is crackproof but pressure-treated wood is not guaranteed against warping, shrinkage, or splitting. Copyright 2023 This Old House Ventures, LLC. It's usually stapled to the wood and isn't a requirement to be on the actual stamp. Admits pieces below a No.3 grade which can be used without waste, or which contain less than 25% waste by cutting. r 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. (Kiln Dried After Treatment). 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. Recommended for uses where high strength, stiffness and good 1s and Selects, to boot. All lumber must identify the association or agency accredited with overseeing the grading MLB is the Maritime Lumber Bureau. 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. Modern chemical baths and pressurization began in the early half of the 20th century. All Scaffold Plank design values are calculated using ASTM Standards D245 and D2555. has the outer 0-0.6 removed while lumber thicker than 2 (44, 46, 66) has the outer 0-1.0 removed for assay. Green unseasoned lumber fresh from the mill is labeled either air-dried (AD) or surface-green (S-GRN). Longleaf, shortleaf, loblolly, and slash are some of the native southeastern pines that are classified as SYP. #1 is better. Walking into a lumberyard or store can be a daunting experience. The resulting hole will be filled with a treated wood plug to prevent easy access by insects or decay fungi. Pressure treatment is an affordable alternative to expensive naturally rot-resistant lumber. t|]UE)@Whi`_@z>'}8/p}8c hVmO9 ^TUJk[ It may have poor drainage and air circulation, or like a sill plate, is difficult to repair or maintain. Research shows that Southern Pine can be expected to last for many decades when properly treated and installed for its intended use. No.1 Prime No.2 Prime Size inches ( actu l) Spacing inches on center 12.0 16.0 24.0 12.0 16.0 24.0 12.0 24.0 16.0 24.0 TREATED FLOOR /D . The wood then is dried naturally or in a kiln to evaporate the water out, leaving the preservatives behind. maple, oak, birch, etc. 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. The chamber is then flooded with a diluted chemical solution, and hydraulic pressure applied for 20 to 60 minutes to force the solution deeper into the wood. Office: (850) 434-2611 | Toll Free: (800) 995-7742 Wood is a sustainable product, making it . The chemical treatment makes the wood resists insects, mold, mildew, and rot but not moisture-proof. it would be unsuitable unless it is a naturally resistant wood such as teak or redwood. 3 (lowest strength, not pretty). r Charges found non-conforming, either through plant IQC or third-party, are isolated for correction and the corrective actions are to be documented accordingly. Additionally, all cuts and drilled holes should be treated with preservatives to prevent damage to exposed untreated wood. Good appearance, but graded primarily for strength and serviceability. The main difference between #1 and #2 is the slope of the wood grain, size, spacing, and the number of knots and holes, and the length of any splits. I guess it is just a regional thing. The quest for decent boards begins. Like all lumber, the fewer knots, blemishes, or defects, the higher the grade. The label will show w/CE which means with color enhancement. Helping You to Do It Yourself! UC5A has almost double the weight of chemical protection as UC4C, and UC5B and UC5C both have more than three times the amount found in UC4C.
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