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. "Stud" is a fifth designation, meaning it's good for a load-bearing wall. Powered by Discourse, best viewed with JavaScript enabled, www.strongtie.com/products/ptwoodfaqs.html, http://www.anthonyforest.com/pdfs/AWPA-Use-Category-System-U1-07.pdf. I guess it is just a regional thing. Wood treated with water-based preservatives for saltwater immersion has significantly higher retention levels than other types and categories. Typically, the first step of a third-party agency audit involves a review of the plants records. Recommended for same purposes as Construction grade. It is most commonly used for sheathing and applications where a fine finish is not required. Modern science has developed preservative treatments that are odorless and colorless, and leave the wood paintable and dry to the touch. Pressurization then forces the liquid deep into the wood. vX63t$i"CIdxGFG(bpX@F2@2@pGG1Z@? 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. Luckily, a more budget-friendly option of pressure treated lumber grades is available. http://www.ecoprem.com/pdf/ecoprem_wood_technology_competitive_analysis.pdf. 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. See Table 2 or SPIB Grading Rules for design values. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. Raised floor homes look great and protect homeowners against risks from flooding and subsiding soils. 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. Once penetration is verified, the outer section of the cores is removed to measure the amount of preservative retained. H|TnT1}W1yi= hEN4Kg8 bvlbh%gCXcX]NDRnFiUH>.Sl6Vi\(f^j+d}IT#h3Si [j6sG1Pbh`sX9W.+|FdqvJY/nm Sd@{D The lumber is inspected for knots, splits, and other defects that can weaken the woods structural strength. Email: cspsales@canfor.com. Dimension stability improves 12-17 times compared to untreated wood However, they make an ideal solution for use in arid or dry locations. MSR Scaffold Plank is available 2"-thick only. Locations Products. #2 Prime Grade has a maximum hole size of ". The species and grade, however, affect the spacing between supports with #1 often rated for greater spans. D Fir-L or Doug Fir for Douglas fir or larch (L), H-F, Hem-fir, or Hem for hemlock-fir or hemlock. 2, and No. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. 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. In appearance, it is at least 57% clear of defects. SYP Dimension Lumber Specifications | Canfor x 8 ft. #2 Prime or Better Ground Contact Pressure-Treated Lumber is a . Protecting wood against rot and insects has been done for centuries. Most lumber in my area is listed as Prime or Premium depending on the box store and is stamped #2 or #2 & BTR. SPIB is a not-for-profit company that serves as the rules-writing agency for the Standard Grade Rules in Southern pine lumber. Grademarks. A final vacuum removes the excess preservative from the woods surface before the charge is removed from the cylinder and placed on the drip pad. We've downsized and im already overimproved. The two remaining designations, while not very useful to a homeowner, enable grading agencies to enforce their standards. Lumber Grades - ProWood lumber Details Made from quality Southern Pine lumber Available for . Recommended for general framing purposes. The stamp identifies the wood species, grade, moisture content, inspection organization, and the mill it came from. Unseasoned or green lumber has a moisture content of 19% or greater and subject to shrinkage and warping as it dries. s There are six different types of pressure treatment ratings, with different categories in some of them. Establishes lumber quality based on a graders visual inspection. It was widely used as a preservative from the mid-1930s to 2004. Charges found non-conforming, either through plant IQC or third-party, are isolated for correction and the corrective actions are to be documented accordingly. ehV$W'A These factors, plus the moisture content at the time of milling, determine the grade assigned. Grademarks | SPIB | Southern Pine Inspection Bureau The wood grain has a 1 in 8 slope, and there may be bark edge or wane visible. (@ 2=h/jO,,5rB G 5~7 ol}E|Cf6zg/I !^ endstream endobj 144 0 obj <>stream I don't think HD carries it. It often links with the logo or symbol of the association that oversees the grading at that mill. Youll get less movement with kiln-dried (KD) or surface-dry (S-DRY) lumber, which has a moisture content between 16 and 19 percent. 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. Myrtle Beach, SC. Top-quality lumber 2x4 through 2x12 are either #2 Prime grade, #2 & Better/Appearance grade or #1 grade. It's easy to work with. MCA can be used inside or out, above ground, in-ground, or in fresh-water contact residential areas. Then I worked to live. Even if you are on the right track, you will still get run over if you just sit there. 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. All four longitudinal faces must be free of pith and/or heartwood. {l@n7gM. A Production Category is defined as a given preservative, specie and retention combination. Bruce, I found more info on the heat treated wood. The grade mark can include "1W" or "2W" if visually graded to the wane requirements for No.1 or No.2 dimension lumber, respectively. The most noticeable difference may be the price and scarcity of #1 grade lumber. The accredited inspection agency, manufacturer, and plant are also commonly on the label but may be available in the bar code. 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. 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. Follow the link here to complete our Treated Division and Laboratory Customer Satisfaction Survey. Recommended for general construction uses. Largest hole permitted is 1/16". WestWood Heat Treated Lumber Production Corporation is unique technology that uses heat treatment instead of chemicals for timber processing to significantly improve various characteristics of wood. o>>QS-RSnwO4piq4Szh+jkS3NQn(:;^unn^}Q8ws{7sFS He is passionately interested in home improvement, renovation and woodworking. It's distinctive wood grain appearance is great for decorative finishing. It may have poor drainage and air circulation, or like a sill plate, is difficult to repair or maintain. 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. The lumber is stronger than #1 or #2 and is ideal for all structural construction applications. There are different types of treatment and lumber grades for different uses. The lumber has the structural strength it is graded with but has fewer blemishes or knots, so a better appearance. A very good product to, Highest recognized grade of Finish. Too much. Overly dry wood often needs a pilot hole before fastening to prevent splitting. It should be noted, #2 & BTR does not mean #1. Treated wood products must meet very specific quality requirements to meet the building code. Both DIYers and building professionals will like these garden and outdoor living ideas and plans. 2 kd 19 ht 434 and spib ht 434 it looks like it's kiln dried and heat treated, but is it pressure treated to resist rot? Southern Pines ease of treatability has made it the preferred species when pressure treatment with wood preservatives is required. Those stacks also include some No. There are many other uses for pt lumber, including docks, boathouses, sheds, boardwalks, play structures, gazebos, and the list goes on. Dense Select Structural Select Structural. Pressure treated wood has many outdoor uses and even is used in some indoor locations, especially where moisture may be a concern. End-glued, face-glued, and edge-glued Southern Pine in glued assemblies, including stress-rated grades of finger-jointed 2" Dimension Lumber. maple, oak, birch, etc. Grades of Lumber - Culpeper Wood Preservers Commonly used for joists, trusses, and other load-bearing applications. A quick depressurization cycle then removes any excess from the wood before it is removed from the treatment cylinder. Wood is a sustainable product, making it . As the wood dries, the preservative is left behind to protect against insects, mold, mildew, fungal growth, and rot. 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). @_10ip CzHrGfnl~Frc>fkH 2X [ ^ endstream endobj 140 0 obj <>>> endobj 141 0 obj <>/ExtGState<>/Font<>/ProcSet[/PDF/Text/ImageC]/XObject<>>>/Rotate 0/TrimBox[0.0 0.0 595.276 841.89]/Type/Page>> endobj 142 0 obj <>stream Different chemicals have been used in the preservative bath, with changes being made to limit health risks to humans and animals. It has a unique broad grain cellular structure that allows for uniform and deep penetration of chemical preservatives. SPIB is subject to continual review by IAS to ensure that the laboratory and agency records remain in compliance. This website is presented by SFPA members, including: 2023 Southern Forest Products Association. This defect is exacerbated in the presence of Spi-1 haplo-insufficiency (Spi1+/- SpiB-/-). CCA is a mixture of chromium, copper, and arsenic that turns wood green. Pressure treatment of lumber has come a long way in the past 100 years. Construction grade is #1 and Standard is #2. Pressure treatment doesnt make the wood stronger or weaker, just more resistant to insect and moisture damage. 32524-0915 Research shows that Southern Pine can be expected to last for many decades when properly treated and installed for its intended use. Since 1960, lumber in North America has been graded at lumber mills by trained inspectors for structural strength and quality control. MSR lumber is distinguished from visually stress graded lumber in that each piece is non-destructively tested. Pro Note: All copper-based wood preservative solutions will corrode unprotected iron and steel brackets and fasteners. There are many questions about the different treated wood products in our market today. Helping You to Do It Yourself! Any lumber experts out there that can confirm KD HT is ok for a new deck? SPIB also inspects mills that manufacture and label various lumber products under these rules. 3 (lowest strength, not pretty). Some lumber is also treated for fire protection and used throughout different areas of residential, commercial, and industrial construction. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! Generally, the charge is accepted if at least 80% of the cores (16 of 20) meet the minimum depth of penetration. While most residential pressure treated lumber is deemed safe for use, dust and particles can still be harmful. Ground contact means anything within 6-inches of the ground or in contact with the ground, foliage, grasses, or over water or wet areas. Select Structural (SS) is the highest grade based on strength and durability. 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. Pressure treated lumber commonly is end-tagged with an information label before leaving the plant. This specific set of data for each charge is called a charge report. Like all lumber, the fewer knots, blemishes, or defects, the higher the grade. Pressure treated wood can also be stained or sealed to enhance its color and for added protection. 2 lumber, which provides good strength at a reasonable price. The stapled on label will have w/CE to indicate with color enhancement, she is correct. s Research shows that . When pressure treated it is resistant to decay and termites. 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 The size, location, and the number of knots and other defects, and the slope of the wood grain affect the structural strength of lumber. 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. Box 10915 Pensacola, Fl. KD and KD-HT are often more expensive and less susceptible to warping and shrinkage. the Southern Pine Inspection Bureau (SPIB) Standard Grading Rules for Southern Pine Lumber. Characteristics are limited to provide good strength and excellent serviceability. it would be unsuitable unless it is a naturally resistant wood such as teak or redwood. Preservative Treatment When pressure-treated lumber is required, it should be treated according to appropriate American Wood Protection Association (AWPA) Standards or through the product evaluation process of the International Code Council (ICC) Evaluation Service. 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. SPIB is able to assist manufacturers achieve and maintain the quality that their customers require by employing highly qualified instructors. Similar in appearance to No.2 Dimension Lumber. The molecular changes in wood composition have a result of dimensional stabilization, protection against rot and wither, and as a result, expanded use opportunities. Additionally, all cuts and drilled holes should be treated with preservatives to prevent damage to exposed untreated wood. A joist made of Douglas fir, for instance, will cover a greater span than a hemlock joist of the same size and grade. The plant is required to keep very specific information for each charge treated in its records system. The table below identifies the types and their use based on the level of retention of preservatives. 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. The solution protects the wood from rot, insects, fungus, mold, and mildew, and also turns the wood a brown tone. r Excellent for painting or natural finish where requirements are less exacting. A superior decking grade, suitable for plank floor where face serves as finish floor. Wood Packaging Material (WPM). Heat Treated vs Pressure Treated Wood - Canadian Home Inspection Services Termawood is an unique technology that uses heat treatment for timber processing to significantly improve various characteristics of wood. 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. My 2-Story Addition Build in Progress Link . As we can find no formal and simple description of all the different grades, we attempt to describe the grades that we currently stock so that you can decide what best fits your need and customer base. All rights reserved. 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. 2 x 4 x 20' Prime Pressure Treated #2 Lumber *BUY IN BULK* AND SAVE Grade Descriptions - Southern Pine #1 #2 prime etc deals with the quality of the board. The grading is standardized and consistent for structural strength across the U.S. and Canada. The treating process includes an initial vacuum to remove the excess moisture and air to aid in the absorption process. Most is not. 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. S;t HmM~[3`~Dl1Cj^x{}g.-GWlEu Yl[k4!42#>#13"J! 1pJ`w&Im0m/=BA!^/[xN XX=xEzGjB A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. SPIB is committed to assisting our customers meet their treatment goals in the most cost-effective means possible. The kinds of softwood available in different geographic regions often determine what species is available for pressure treatment. 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 . Other than the features that depend on the type of tree the wood came from (i.e. Tel: 843-236-9399. r The chemical treatment makes the wood resists insects, mold, mildew, and rot but not moisture-proof. 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.
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