Commonly used for joists, trusses, and other load-bearing applications. The treated wood is then taken to the yard to dry naturally or to the drying kilns before shipping to the retailer. o>>QS-RSnwO4piq4Szh+jkS3NQn(:;^unn^}Q8ws{7sFS Got your hard hat and high-vis vest? 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. The tag identifies its proper use Above Ground, Ground Contact, etc. Quality control for treating should be done by an approved inspection agency. It has anti fungal properties along with a host of other positive features. Research shows that . #2 Prime grade southern yellow pine. The look of the wood is only important if it is highly visible, such as deck boards, railings, and other visible structural members. Exciting stuffyou wont want to miss that! These factors, plus the moisture content at the time of milling, determine the grade assigned. The lumber may have splits up to 1.5 times the boards width, knots no larger than 3-1/2, and one hole every 2. Both DIYers and building professionals will like these garden and outdoor living ideas and plans. spib no. Gloves protect against slivers and water-soluble chemicals; it is also advisable to thoroughly wash hands before eating or drinking. 43:Gs * endstream endobj 143 0 obj <>stream Lumber must be stamped for strength by a trained inspector and identified with a legitimate stamp. Most likely it is a treated board, since most treated lumber is sold wet, some yards sell K.D.A.T. Some types of timber have natural abilities while others need a boost. The species and grade, however, affect the spacing between supports with #1 often rated for greater spans. Copyright 2023 This Old House Ventures, LLC. SPIB is subject to continual review by IAS to ensure that the laboratory and agency records remain in compliance. 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 Water-repelling at a molecular level For additional information on the proper handling and storage of pressure-treated Southern Pine materials,click here. PDF Strength Treatability Beauty - Teague Lumber This website is presented by SFPA members, including: 2023 Southern Forest Products Association. Green Building Material . wo*kS` 8r 5f)J `A%pWIu `lt=K!a4'(Xg^dU|$a!/,.-`0ir }dF\Nguyi12(8+DU Zty SPIB is subject to continual review by ALSC to ensure that the laboratory and agency records remain in compliance. The amount of moisture in the wood at the time of milling is noted. Then I worked to drink. A quick depressurization cycle then removes any excess from the wood before it is removed from the treatment cylinder. May have to look at Home Depot closer, since they carry #1 above ground. 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. 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. The current process is mostly computerized and mechanized using modern technology. Tyrosine phosphorylation and calcium mobilization induced by BCR engagement is diminished in Spi1+/- SpiB-/- B lymphocytes, although many key BCR signaling proteins are expressed, suggesting that Spi-1 and Spi-B regulate expression of additional . The size, location, and the number of knots and other defects, and the slope of the wood grain affect the structural strength of lumber. As I understand it, the grade refers to the number of knots in a given length. outdoor deck question. heat treated vs pressure treated wood Larger sizes conform to Dense Structural 72 Structural Lumber except for dense grain requirement. A number that identifies the mill where the lumber was produced. As the numbers go up, quality and price go down. Composite of No.3 strength and No.1 nailing edge characteristics for a better nailing surface. The two remaining designations, while not very useful to a homeowner, enable grading agencies to enforce their standards. s Overly dry wood often needs a pilot hole before fastening to prevent splitting. Here is another good link a guy posted over on Ins News Recommended for most general construction uses where moderately high design values are required. Severe Weather 2-in x 6-in x 12-ft #2 Prime Wood Pressure Treated Lumber SYP holds almost 85% of the U.S. pressure treated market. 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. Got the ledger #2 GC from the lumber yard. Plant inspections are required to be performed at least once per month, but may be increased due to production and/or performance. PDF Reference Design Values for Visually Graded Southern Pine Dimension Grademarks | SPIB | Southern Pine Inspection Bureau 2 x 4 x 20' Prime Pressure Treated #2 Lumber *BUY IN BULK* AND SAVE 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). 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. Dense Select Structural Select Structural. Its appearance ranking is 80% or better clear of defects. Kiln-dried wood vs pressure treated: what is better? #1 will have less knots and is typically spec'd for joists and rafters. You Save $3.39 with Mail-In Rebate. Wood treated with water-based preservatives for saltwater immersion has significantly higher retention levels than other types and categories. Recommended for general construction uses. WestWood Heat Treated Lumber Production Corporation vapor-stabilization technology is a patented wood heat treatment technology, utilizing a natural thermochemical reaction and steam at temperatures of 230-240 C (450 F) and exclusive of any chemical additives. 3 (lowest strength, not pretty). The International Code Council Evaluation Service (ICC-ES) similarly approves preservative systems through its Evaluation Service Reports (ESRs). In ancient times the Greeks used olive oil, the Romans tar, and others used pitch or lye. The type of preservatives, retention level, and year it was treated are identified on the label. Even if you are on the right track, you will still get run over if you just sit there. One wide face and both adjacent narrow faces must be free of pith and/or heartwood. The recommended type of treated wood for in-ground use is UC4B and UC4C; UC4B has a higher retention level than lower graded types, and UC4C has even more. This process is required through the plants Internal Quality Control (IQC) for all treated lumber products to be represented as meeting an applicable standard. Sep 13, 2020 i would not use that for cutting boards,looks to be a soft wood and you want a hardwood like maple or cherry. Trex gets awfully hot also and demands upkeep. The kinds of softwood available in different geographic regions often determine what species is available for pressure treatment. |fqqq~^;mffvf-5wV)64O?q30baveaj^-l*)+1$D>Vnm:OP0C#ddu1;r:8wwQKww3)IKLQ. BOARD GRADES. CCA Pressure-Treated Wood Wood-constructed homes, roof shakes and shingles, exterior decks, and children's play equipment that were built before 2004 and not made of cedar or redwood were likely constructed using wood that was pressure-treated with CCA, or chromated copper arsenate. Top-quality lumber 2x4 through 2x12 are either #2 Prime grade, #2 & Better/Appearance grade or #1 grade. Timber Grades have similar characteristics to the corresponding grades of dimension lumber. Since 1960, lumber in North America has been graded at lumber mills by trained inspectors for structural strength and quality control. It often links with the logo or symbol of the association that oversees the grading at that mill. Utility grade is #3 grade lumber and has even fewer restrictions regarding knots and defects compared to other grades. Suitable for economical use as sheathing or lathing. KD HT lumber vs PT lumber for deck - InterNACHI Forum The most noticeable difference may be the price and scarcity of #1 grade lumber. 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. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. The lumber is stronger than #1 or #2 and is ideal for all structural construction applications. Tel: 251-457-6872. For appearance, it must be 29% clear of defects. The type identifies the amount of chemical retention which in turn determines how or where to best use the lumber. 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. All rights reserved. *Load duration factors greater than 1.6 shall not apply to structural members pressure-treated with water-borne . Those and other treatments are used for industrial purposes instead. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. Structurally, an SPF #2 28 can be used to span distances of 14-11. Helping You to Do It Yourself! Im not going to struggle with huge bows and twisting. 32524-0915 This lumber has been non-destructively evaluated by an American Lumber Standard Committee approved machine. Thats why every stick of lumber coming out of a sawmill is appraised by trained inspectors and given a grade stamp. #2 Prime Southern Yellow Pine Above Ground Actual: 1.5-in x 5.5-in x 12-ft #2 Prime Southern Yellow Pine Above Ground Actual: 1.5-in x 5.5-in x 12-ft Treated for protection against fungal decay, rot and termites Treatment meets AWPA (American Wood Protection As However, enough gets into the wood to provide a shell of protection that cant be matched with a brush. www.strongtie.com/products/ptwoodfaqs.html, FAQ: Pressure-Treated Wood | Simpson Strong-Tie. We've downsized and im already overimproved. 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. 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. 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. #2 Prime/Appearance Grade (APG): A step up from #2 in appearance, this grade will have characteristics . The appearance doesnt affect the structural grade, it just is superficially more appealing. He is passionately interested in home improvement, renovation and woodworking. The grades are stamped prior to the wood being treated, so are the same for both treated and untreated. Construction grade commonly refers to #1 grade lumber. While most residential pressure treated lumber is deemed safe for use, dust and particles can still be harmful. It has a unique broad grain cellular structure that allows for uniform and deep penetration of chemical preservatives. I did some research and found that they only staple the PT label to the end of the boards in many cases. 2023 Southern Pine Inspection Bureau | All Rights Reserved | SitemapP.O. I don't think HD carries it. Those stacks also include some No. See Table 2 or SPIB Grading Rules for design values. Recommended for same purposes as Construction grade. As I understand it, the grade refers to the number of knots in a given length. To qualify for a SPIB grade-marking license, a mill must have verified credentials in the manufacturing, seasoning, and grading of Southern Pine lumber. In most cases, the required depth of penetration is 2.5 or 85% of the available sapwood. Final Price $ 27 40. each. the Southern Pine Inspection Bureau (SPIB) Standard Grading Rules for Southern Pine Lumber. Douglas fir has a tight close grain cell structure making it stronger and less prone to warping and twisting than pine. Denotes the woods species or a group of species with similar strengths. I have to call this lady back again at COX lumber, I had called her about something else and she was very knowledgable. Another brand of heat treated wood that can be used for decking. It's distinctive wood grain appearance is great for decorative finishing. Decking materials such as 26 and 5/46 frequently are of better-looking #1 and #2 lumber. The plant is required to keep very specific information for each charge treated in its records system. Modern science has developed preservative treatments that are odorless and colorless, and leave the wood paintable and dry to the touch. Not all PT is rated for ground contact. Select Structural (SS) is the highest grade based on strength and durability. H\n0l/$x\$-"-! The main tree species used in the manufacture of pressure treated lumber are softwoods that regionally predominate in the mill area. Pressure-Treated Lumber 15 Span Tables . Establishes lumber quality based on a graders visual inspection. Machine Evaluated Lumber is also required to meet certain visual requirements. Pressure treated lumber is available in 1, 5/4, 2, 4, and 6 nominal thicknesses, and widths up to 12. The grading is standardized and consistent for structural strength across the U.S. and Canada. hbbd``b`i@i`}{" s@BHpE ^ !RHp@00 30 . endstream endobj startxref 0 %%EOF 162 0 obj <>stream Pressure-Treated Southern Pine The longer the wood is in the pressure chamber, the greater the content of chemical preservatives forced into and retained in the wood. Home Derpo person said that #2 is ground contact and stronger. #1 grade can have more wane (or bark) (See Wood Code, below). The quest for decent boards begins. AC2 2 x 6 #2 Prime Ground Contact Tongue and Groove Treated - Menards 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. Pressure treatment doesnt make the wood stronger or weaker, just more resistant to insect and moisture damage. But not all defects are obvious. Locations Products. What's this lumber stamp mean? - Fine Homebuilding A superior decking grade, suitable for plank floor where face serves as finish floor. Reasonably clear, but permits limited number of surface checks and small tight knots. See Finish grades for face side; reverse side wane limitations are lower. 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. 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. 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 However, they make an ideal solution for use in arid or dry locations. More knots than Premium grade Ground contact means anything within 6-inches of the ground or in contact with the ground, foliage, grasses, or over water or wet areas. Pressure treated wood for ground contact commonly has twice the chemical retention level as above ground rated lumber. SPIB is accredited through IAS and maintains ISO certification as both an inspection agency (ISO 17020) and a Laboratory (ISO 17025). However, the tight grain also makes it less receptive to pressure treatment. MSR Scaffold Plank is available 2"-thick only. A joist made of Douglas fir, for instance, will cover a greater span than a hemlock joist of the same size and grade. The label will show w/CE which means with color enhancement. Re-inspection of plant production is performed on a routine frequency by the agency. A specific indicator or a specific method is then used to reveal the depth and consistency of preservative penetration. 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. 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. 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. Grade based on No.1 Dimension Lumber except wane and other characteristics that affect appearance are limited. The kd19 is the customers assurance that it was dried to the proper level before it left the plant. So, weve covered a lot of ground, but this is not the end, not by a long shot! It is stamped S-GRN for surface-green or AD for air-dried. Structurally, an SPF #1 28 can be used to span distances of 14-11. 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 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. Gives the trademark or number of the mill of origin. 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. 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. It must specifically be labeled ground contact. 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. Our Services | Lumber Services | Wood packaging material made of unprocessed raw wood is recognized as a pathway for the introduction and spread of pests. Structurally, an SPF #3 28 can be used to span distances of 12-4. All Scaffold Plank design values are calculated using ASTM Standards D245 and D2555. WWPA offers a heat treatment certification program for mills to stamp qualifying lumber with the KD - HT mark. Borates are sodium salts used in water-based pressure treatment solutions. It's easy to work with. There are six different types of pressure treatment ratings, with different categories in some of them. Pressure treated plywood is also available in thicknesses from 1/4 through 3/4. This Old House general contractor Tom Silva usually buys stacks of No. 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. Its appearance ranking requires it to be 75% free of knots or defects. Recommended where appearance and strength are a consideration. Both can be used for load-bearing purposes or other outdoor applications. Lumber is stamped after it is milled and prior to being pressure treated. it's primarily 2x planks. See SPIB Special Product Rules for design values, Appearance is same as B&B Finish for thicknesses of 4" and less. Appearance is same as C Finish for thicknesses of 4" and less and widths 12" and less. What is the Best Pressure Treated Wood for Decks? Tough to find decent boards. The HD guy is wrong. Resistance to biological decay is 15-25 times higher then of untreated wood I guess it is just a regional thing. http://www.ecoprem.com/pdf/ecoprem_wood_technology_competitive_analysis.pdf. 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. Dimension stability improves 12-17 times compared to untreated wood This approach is intended to consider the big picture trends as opposed to allowing otherwise isolated issues to severely affect plant performance status. A Production Category is defined as a given preservative, specie and retention combination. There is no structural premium grade, it is strictly a term for bright looking wood free of blemishes or knots. Most lumber in my area is listed as Prime or Premium depending on the box store and is stamped #2 or #2 & BTR. The Fora platform includes forum software by XenForo. Similar in appearance to No.2 Dimension Lumber. Has a better appearance than No.1 Dense Dimension Lumber because of additional restrictions on firm red heart, pith, knots and wane. s 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. Lumber stamped #2 grade is commonly used for framing, lintels, rafters, trusses, joists, beams, and fencing. The vacuumed cells more readily absorb the solution for better penetration. Treating systems treated under an approved ICC-ES ESR allow code officials the option to accept these products as equivalent for meeting code, as referenced above. r Most is not. Georgia-Pacific Corporation Pressure Treated Lumber - GlobalSpec Southern Pine's ease of treatability has made it the preferred species when pressure treatment with wood preservatives is required. Each American Lumber Standard Committee (ALSC) certified agency has its own registered grade-mark. I hope you have a better understanding of what pressure treatment means and which grade and type is best for your project. Good, serviceable sheathing; usable for many economical applications without waste. has the outer 0-0.6 removed while lumber thicker than 2 (44, 46, 66) has the outer 0-1.0 removed for assay. CCA is a mixture of chromium, copper, and arsenic that turns wood green. Being 80% or more clear of defects, it is often used for cabinetry, furniture, and trim. The clear appearance makes it a choice for trim, furniture, and cabinetry. An internet search says it has to do with less knots and quality, and that #1 is of higher quality. 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 Similar in appearance to No.1 Dimension Lumber. Lumber that is 2 or less in thickness (24, 26, 5/4 decking, etc.) Non-stress rated, but economical for general utility purposes such as bracing, blocking, bulkheading, etc. Myrtle Beach, SC. To qualify for a SPIB grade-marking license, a mill must have verified credentials in the manufacturing, seasoning, and grading of Southern Pine lumber. MCA is an environmentally friendly water-based preservative considered safe for humans and animals and is an alternative to CCA. An economical roof decking which conforms to No. The wood is commonly used for light construction or framing where it isnt visible, or for bracing, packaging, and shipping purposes. MSR lumber is distinguished from visually stress graded lumber in that each piece is non-destructively tested. This double treated Ground Contact lumber must be used for applications where treated lumber is difficult to maintain, repair or replace. Pressurization then forces the liquid deep into the wood. Some on this forum think that is a waste of time, but I think it extends the life of the lumber. SPIB is accredited through IAS and maintains ISO certification as both an inspection agency (ISO 17020) and a Laboratory (ISO 17025). 1, No. It has nothing to do with the wood being pressure treated (PT) at all. Pressure treated lumber is divided into different types based on the retention level or amount of preservative retained in the wood after treatment. Before a given charge can actually go into the plants treated inventory to be ready for shipment, it must first be evaluated for penetration. Recommended for general framing purposes. 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 ehV$W'A However, some KD-HT wood at your local lumber yard might have a tag on the end of the lumber that specifies PT. Details Made from quality Southern Pine lumber Available for . Recommended where high strength, stiffness and good appearance are desired. Good appearance, but graded primarily for strength and serviceability. 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. (Kiln Dried After Treatment). UC3B or UC4A are best for ground contact use. IQC results of treatment for each charge are required to be documented in the plant records to correspond to the individual charge reports. I do like to cover the tops of the joists and beams with ice and water shield. Southern Pines ease of treatability has made it the preferred species when pressure treatment with wood preservatives is required. Listed spans are for wet-service conditions, pressure-treated Southern Pine floor/deck joists, MC > 19%.
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is spib no 2 prime pressure treated