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Dimensional stability. Native New Yorker Meg Jernigan has lived all over the United States, nurturing gardens in the Northeast, the Mid-Atlantic, the West and the deep South. IBHS Requirement for Compliance for Existing Homes. 3) N.R. LIBERTY SBS SelfAdhering Base/Ply Sheet Specs About Specs Docs Videos Get automatic Lifetime Protection on your entire GAF roofing system When you install any GAF Lifetime Shingle and at least 3 qualifying GAF accessories, you'll automatically get a Lifetime limited warranty on your shingles and all qualifying GAF accessories*. The colors and numbers of stripes will vary. hb`````2g gah@b2~*5;413Gp/a`[q Guide describing the requirements by FORTIFIED Home for improving the home's resistance in severe thunderstorms, straight-line wind events, and high winds at the outer edges of tornadoes. McElroy's 5V panels are 24 inches wide and incorporate a classic design that adds beauty to any home. OSB-2. R602.1.8 Wood structural panels. All Rights Reserved. is Not Recommended POWDER FASTENER & LOAD SELECTION CHART ), Connect the bottom of the gable end to the wall below using metal bracket connectors. This is because after it's manufactured, plywood shrinks as it dries. There is no standard definition of the density that an OSB should have. As for thicknesses: 6, 10.18 and 22 millimeters. Appearance. b*4AU(G'I:*!z$lT&a5q|kdrX(nil\=v|k(1P#5 Leaning. To ensure success for the complete wall system (from cladding to dry wall), please view the Building American Solution Center Guides on the following topics: Also see if local building codes have specific requirements or ask the local building department. Gable end walls must be tied to the structure. For heavier loads - a 40/20 rated panel (19/ . What does the "span rating" of an OSB panel mean? Recall Information: Decking | Press Releases. This non-sag, non-slump medium bed mortar is designed for most large format porcelain, ceramic and natural stone tile. Common thicknesses for sheathing panels are: 5/16 inch (7.9 mm), 3/8 inch (9.5 mm), 7/16 inch (11.1 mm), 15/32 inch (11.9 mm), 1/2 inch (12.7 mm), 19/32 inch (15.1 mm), 5/8 inch (15.9 mm), 23/32 inch (18.2 mm), and 3/4 inch (19.0 mm). If panels must be stored outside, stack them on a level platform supported by at least three 4x4s to keep them off the ground. Oriented strand board, or OSB, is a wood structural panel that can also be used for flooring. Building experts consider oriented strandboard (OSB) and plywood to be equally effective as wall sheathing, roof decking and floor underlayment. Guide describing details that serve as a visual reference for each of the line items in the Thermal Enclosure System Rater Checklist. Right Hurricane strapping attaches every roof truss to a wall stud. Right This coated OSB sheathing product is available with an integrated insulation layer. It has also become a popular material for decoration and not just for structural uses. Hardwood plywood is commonly used in applications where these qualities are desired, like flooring, cabinets, or wall paneling. This is measured to be .500 inches. OSB panels are available in a variety of common thicknesses and sizes as shown in Table 1, below. A typical 4 x 8sheetof 1/2-inchOSB weighsaround 54 lbs. Wood sourced through programs certified under the Sustainable Forestry Initiative. This type of plywood is made up entirely of birch wood, so unlike some other hardwood plywood, it does not use softwood for the inner plies, and the inner plies are void-free, increasing its stability. Wall covering. South Loop Store. Due to its extremely smooth surface, it holds paint better, and looks better after being painted, than other types of engineered wood panels.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'roofonline_com-mobile-leaderboard-2','ezslot_18',884,'0','0'])};__ez_fad_position('div-gpt-ad-roofonline_com-mobile-leaderboard-2-0'); The wood plies in MDO panels are typically softwood, and a thick, smooth layer (the overlay) of a highly water-resistant resin is applied to either one or both sides of the panel. In this sense, the fact that they can be plastered, painted or varnished usually stands out. 1/4 inch = 7/32 inches. These layers are combined to form OSB panels of the desired panel thickness. Other engineered wood panel types, such as particle board or OSB, contain a much higher percentage of adhesive resin, and since these resins are heavier than wood, these panels tend to be significantly heavier than plywood. The IBHS Fortified Home standard is designed to make homes more resilient and durable; guidance is available for New Construction and Existing Homes in Hurricane zones and High-Wind zones. Here are standard thicknesses and their costs per sheet: 1/4-inch: $32-$37 7/16-inch: $34-$51 1/2 inch: $34-$51 23/32-inch: $50-$56 3/4-inch: $58-$77 OSB Cost Breakdown You can use 7/16-inch thick OSB sheets without support for areas where the snow load is 30 pounds per square foot because it's durable and maintains building integrity much longer than other sizes. For the curious - 7/16" OSB has a span rating of 24/16 and with supports every 24 inches is good for a roof live load of 40 psf (pounds per square foot) with a 10 psf dead load. Wrong When insulated sheathing is installed correctly, you should not see daylight. Moisture resistance. Before drying out, of course, it can be much, much heavier.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[580,400],'roofonline_com-narrow-sky-1','ezslot_24',170,'0','0'])};__ez_fad_position('div-gpt-ad-roofonline_com-narrow-sky-1-0'); A typical 4 x 8 sheet of 1/2-inch Pressure-Treated Plywood weighsaround 60 lbs. Sanding of the wood, which takes place during manufacturing, can remove up to 1/32 inch of material from the plywood sheet. Building Code Performance Categories, Panel Thickness 7/16 CAT 0.418" (10.61 mm) 15/32 CAT 0.451" (11.45 mm) 1/2 CAT 0.483" (12.26 mm) 19/32 CAT 0.578" (14.68 mm) 23/32 CAT 0.703" (17 . Because plywood is made of veneers that are glued and pressed together, unlike OSB, its more attractive and can be used for finish work. We could also classify them according to the type of mechanization with which they are sold: The measures or dimensions are in this case much more standardized than in other types of panels. Product Specifications Available Sizes: 47-7/8 x 95-7/8 panels (Longer panels and custom thicknesses are also available. OSB ranges from $32 to $77 per 4-by-8-foot sheet. Available Sizes (Mills 451, 475, 500, 530), Building Code Performance Categories, Panel Thickness. Still standing proud. Gable end walls on rooms with vaulted or cathedral ceilings. Durability against fungi and insects. The finished boards are cooled, sanded and cut into varying lengths depending on their use. 3/7 inch = 11/32 inches. These cookies will be stored in your browser only with your consent. Proper installation is even more important in these areas to protect against storm damage. Softwood plywood is normally the cheapest plywood. A typical 4 x 8 sheet of 1/2-inch Baltic Birch Plywood weighsaround 55 lbs. An OSB board consists of several layers of glued wood chips to which pressure is applied. It can be worked with the same tool and machined in the same way as other types of boards or wood: cut, drill, drill or nail. They may include steel connection plates or straps. According to SBC Magazine, the strength axis is the direction that is parallel to the grain and indicates which way a panel should be installed. 2023 Louisiana-Pacific Corporation. Longitudinal: 0.03 0.02%. OfcR 0 0 View More Details. See Figure 1. kg lb. 1.5 PSF. Place one 44 in the center and the other two 4x4s 12 to 16 inches from the ends. The recommended minimum thickness of OSB panels for timber-frame walls is 12mm when the cells in the supporting frame measure up to 62.5cm on a side, and 15mm for frame members spaced up to 83.3cm apart. Building Code Performance Categories, Panel Thickness 7/16 CAT 0.418" (10.61 mm) 15/32 CAT 0.451" (11.45 mm) 1/2 CAT 0.483" (12.26 mm) 19/32 CAT 0.578" (14.68 mm) 23/32 CAT 0.703" (17 . Confirm with the local building department if the house is in a hurricane-prone region and if local requirements exceed those of the IRC. Shall conform to DOC PS 1 or DOC PS 2 and be identified for grade, bond classification, and performance category. plywood or OSB or 3/4-in. OSB/plywood sheathing). Thickness. To be more specific: What are the OSB boards for? Does not have nodes, gaps or other types of weaknesses such as plywood or solid wood. This goes for all other types of engineered wood panels as well. In no case should the OSB board, not even the OSB / 3 and OSB / 4 types, be submerged or come into direct contact with water. CLT offers design flexibility and low environmental impacts. It usually means different thickness but different manufacturers use different colors, its probably blue..or yellowright ..it notes the thickness of product..blue = 7/16 yellow = i think 1/2 red= 5/8, Your email address will not be published. It also describes where Performance Rated panels are used and provides updated trademark and performance category information. The answer may seem ambiguous. Most OSB is manufactured with a rough side and a smooth side with "this side down" stamped on the smooth side. This puts less pressure on forest resources, that is, greater use is made of the tree. Blue Ribbon OSB sheathing panels contain no core voids, knots or splits and provide a quality base layer for wall and roof sheathing applications. This is due to the natural process of expansion / contraction of the wood in the face of changes in the degree of humidity. It took until the 1980s for a Canadian company, Macmillan, the current version of the oriented reinforcement board was successfully developed. The grade stamp on an OSB panel includes information on the applications for which its appropriate; its thickness; and how wide the spacing should be between supports, like studs and the strength axis. But OSB is not suitable for long-term exposure to the weather. The 250 125 cm and 18 mm thick OSB / 3 costs 25-30. PERFECTION SHINGLE LAP (FIBER) Length. *Performance category replaces the fractional nominal thickness used in PS2. Describes OSB composition, properties, code acceptances, and applications. READ THE BEST ANSWERS FOR THE BEST QUESTIONS. Within the grade stamp on a panel you will find the span rating. Structural Sheathing (plywood/OSB) in Exterior Walls, Install structural sheathing in exterior walls to resist wind pressure. The ceiling diaphragm must be a minimum of 1/2-in. Particle Board: The product generally known as particle board is similar to MDF. Manufacturers treat the edges of OSB boards and use water-resistant resins, but the product shouldnt be exposed to the weather. Code language is excerpted and summarized below. $2.99 /sq.ft. It is generally the lightest type of engineered wood panel, due to the light weight of the wood species used and the (relatively) low amount of adhesive used in the manufacturing process. The price of OSB has increased 510% since January 2020, exceeding the peak price increase in lumber by nearly 180 percentage points. Rectangular wood strands blended with thermal-set, waterproof adhesives are arranged in cross-directional layers. Plywood, OSB, particle board, etc. OSB may have a rough and variegated surface with the individual strips of around 2.5 cm 15 cm (1.0 by 5.9 inches), lying unevenly across each . . It is heavier than the plywood. This does not mean that they cannot be purchased in different sizes or even OSB when cut. While we continually update our database, links may have changed since posting. 37 0 obj <>stream Fire resistance. Also make sure that you get your supporting timbers at the correct spacing. The wood strands in the outer layers are oriented one way, and the strands in the interior layers are oriented the other way, which increases panel strength.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'roofonline_com-portrait-1','ezslot_31',110,'0','0'])};__ez_fad_position('div-gpt-ad-roofonline_com-portrait-1-0'); OSBis manufactured in a slightly different range of thicknesses thanplywood. Layers are consolidated under extreme pressure, creating a stiff, strong and durable panel. Relative to their strength, OSB panels are light in weight and easy to handle and install. Prescriptive methods for retrofitting gables 4 ft tall and taller are detailed in the gable end wall bracing retrofit section of the IBHS High Wind Standard and are consistent with methods included in an appendix to the International Existing Building Code (ICC 2018). The rating stamps for plywood and oriented strand board (OSB) lumber are provided. Durable and weather-resistant, this enamel lasts for years in exterior applications. A red opaque object A. reflects red light only. The living room side is green and the hallway side is blue. Overview of Normal Minimum Thicknesses for Different Uses: 9 + 10mm:packaging, protective panelling, furniture R602.10.1.3 Spacing of braced wall lines. Does GP's wood come from sustainably managed forests? (See IBHSs Gable End Wall Bracing Retrofit Section. R602.3.5 Braced wall panel uplift load path. Proper anchorage or connection prevents the shear walls and, in turn, the rest of the structure from laterally racking, displacing, or overturning during a high-wind or seismic event. First, determine the OSB length. Relative to their strength, OSB panels are light in weight and easy to handle and install. Other products have corrugated side protectors that should indicate piece count. Premium performance. Densglass Technical Guide - Gypsum, Wood, Lumber, OSB Boards osb thickness color chart. Building codes in some areas require that the best OSB for walls is 1/2 inch thick if stucco will be applied. R602.10.2.1 Braced wall panel uplift load paths. A publication highlighting recommendations that contribute to improved overall performance in the structural shell and focus on good connection details to tie together exterior walls, roofs and floors. During a hurricane, tornado, or high winds, wall systems can succumb to structural failures and water damage due to exposed sheathing, Unsealed joints or penetrations in the wall structural sheathing or storm damage can allow rainwater to enter the building, causing severe damage, including saturation of insulation and drywall, potentially leading to extensive damage to sheathing, flooring, interior finishes, and household contents. A typical 4 x 8 sheet of 1/2-inch MDO weighsaround 48 lbs. 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The mark signifies that panel quality is subject to verification through APA audita procedure designed to assure manufacture in conformance with APA performance standards or the standard shown in the mark.