5/8 osb roof

Page 3 of 7 V1.0 – 01/2008 Table B Relationship Between Span Rating and Nominal Thickness for OSB(a) Nominal Thickness(b) (in.) Dimensions: 5/8 x 4 x 8. When this is the case, experts recommend a 5/8-inch-thick sheet. 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. x 8 in. These are plywood and OSB (oriented strand board) boards commonly used for sheathing walls, roofs, and decks. OSB roof panels should always be installed with the grade stamp facing into the attic and the screened surface (with the nail guide lines) facing up. Cross purlin designs with 16 OC are sometimes called for; using nominal lumber 1X … Provides dimensional stability and stiffness for wall and roof sheathing needs Engineered product with no knots, splits or other defects that might impact panel performance Strong and uniform consistency throughout ... Home > Panels Subfloor > OSB > 4X8-5/8" T&G OSB UNDERLAYMENT. The goal of a foil-backed OSB is to cool the air within the top layer of insulation in the attic or wall by emitting the radiant heat absorbed through the roof or exterior walls, which reduces the Delta-T and lessens the overall energy use in a building. Sheathing should be a minimum of 19/32-inch thick. Blue Ribbon® OSB sheathing panels contain no core voids, knots or splits and provide a quality base layer for wall and roof sheathing applications. through 2c apply to APA Rated OSB Sheathing, APA Rated OSB Structural I Sheathing, and APA Rated OSB Sturd-I-Floor respectively. The number of nails needed for a roof varies on multiple factors, such as board face width, length and roof truss spacing. girlbuilder | Jan 20, 2007 08:32am | #98. While a sheet of plywood might be 5 to 7 plies thick, a sheet of OSB is made from as many as 50 strand layers packed and compressed into the same thickness. Manufactured from waterproof heat-cured adhesives and rectangularly shaped wood strands that are arranged in cross-oriented layers, OSB is an engineered wood panel that shares many of the … Some older H-clips do not provide a built-in gap. Span Rating 3/8 7/16 15/32 1/2 19/32 5/8 23/32 3/4 7/8 1 1-1/8 Keep in mind that the load of the roof still plays a role in the plywood thickness. The OSB board got wet after one significant rainstorm before the shingles were able to be put on. Do you think that we will have any problems with our OSB sheathing roof… Actual weight may vary by mill. OSB is manufactured in a slightly different range of thicknesses than plywood. Boards used for sheathing range from those with a 4-inch face to 48-inch-long plywood sheets. Estimated panel weight. • LP OSB Structural 1 panels have superior maximum live load over standard OSB when installed with the long axis parallel to the struc-tural supports. Sheathing Type Typically, 15/32-inch or thicker panels are required in high-wind areas. When the grade stamp is covered by roofing, the building inspector will not be able to confirm that the correct OSB roofing panel was used. Features. Rafters that are slightly farther apart might require ½ inch or 5/8-inch-thick plywood. Only 23/32" thickness AdvanTech ® subflooring and 1/2" and 5/8" thicknesses of AdvanTech ® roof and wall sheathing are included in ICC-ES report ESR-1785. To find the amount of plywood needed to cover a roof start by finding the area of the roof. CDX works fine in 1/2" or 5/8" thickness. OSB sheathing is a sustainable, durable, economical and practical choice for builders and framers. Get all the plywood supplies needed to finish your home renovation project here. Multiply the length of the roof in feet by the width of the roof in feet to find the area of the roof … Roof sheathing comes in grid-marked 4-by-8-foot sheets, and should be installed perpendicular to the frame. Voluntary Product Standard PS2. Both types of reconstituted wood panels come in different sizes and thicknesses. ; Floor or roof sheathing conforming with this table shall be deemed to meet the design criteria of Section 2304.7. The thickness required by Josh’s circumstances are good for roof snow loads of up to 70 psf (again spanning 24”). Limitations and restrictions apply. DryGuard® Enhanced OSB roof sheathing panel is a Structural I rated sheathing offering improved moisture resistance from the elements throughout the panel. 5/8 4x8 Oriented Strand Board Tongue and Groove 19/32 TruFlor 4 in. I build custom homes that required quality and that is what I use. Once the area is known, divide by the area of a 4×8 sheet to find how much sheathing is needed. DEAR TIM: My builder insists that 5/8" OSB plywood is fine for the roof. OSB boasts a more consistent density. • Improved fasteners such as ring shank nails increase the uplift resistance of the roof sheathing. Find the Area of a Roof. The typical thickness range for sheathing is 3/8 to 3/4 inch. Many homes have rafters that are even wider at 24 inches apart and will require a thicker sheet of plywood. So you may want to consider upgrading to 5/8" or 3/4" OSB instead of the typical 1/2" at the roof. OSB sheathing success relies on proper installation and there are a number of strategies to follow to minimize call backs and to ensure that your build enjoys longevity and aesthetic appeal. Our varied selection of building supplies include engineered wood products suitable for subfloors and underlay structures. OSB will have more "give" in it than plywood. Section 4 ... 19/32, 5/8, 11/16, 23/32, 3/4, 7/8, 1, and 1-1/8 inch. OSB Plywood Outdoor | Roofing text: Tim Carter. Designed for use as combination subfloor/ underlayment. (Fwiw, as a GC I would use it on my own home) if your roof is trussed, its typically spaced at 24" OC. Provides high … Additional information may be found in specific LP product literature and in literature from the APA, whose stamp of quality appears on LP OSB products. The values given in Tables 1 and 2 represent the maximum allowable loads for plywood or OSB. While OSB (Oriented Strand Board) is generally cheaper than plywood, it is heavier and not as stiff as plywood and can result in soft squeaky floors under weight.The biggest complaint against OSB is that it doesn't handle moisture very well so it is more suited for indoor use. n Improved fasteners such as ring shank nails increase the uplift resistance of the roof sheathing. You may contact LP at 1-800-648-6893. Sheathing Type Typically, 15/32-inch or thicker panels are required in high-wind areas. Never attach roof sheathing with staples; 8d ring-shank nails should be used instead. Foil-backed OSB is applied mostly in attics; however, it is also used in wall systems. Protecting your roof during construction with enhanced OSB panels can save you valuable time and money when you need it most. A homeowner recently wrote and asked me the following regarding OSB roof … Malcolm, I almost always use 5/8" ZIP sheathing on roofs, and metal roofing installers have never questioned it. OSB panels can be manufactured in lengths up to 16 feet (or sometimes even higher), while plywood is generally limited to 8 to 10 feet. For SI: 1 inch = 25.4 mm. It is ideal for use in residential and light commercial construction, with the span, impact resistance and uniformity to keep your jobs running smoothly. I've never used commodity OSB on a roof but it's probably fine in 5/8" thickness, and possibly in 1/2" thickness. Oriented strand board (OSB) is commonly used as the primary structural ... similar information for OSB used as wall and roof sheathing. 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. Using OSB. Plywood is a bit more expensive, but is usually stronger and is often selected in cases where the roof covering is heavier, such as for slate, clay, or concrete tile roofs. For sanded plywood panels, see Table 3. In some cases, load Oriented Strand Board is a widely used, versatile structural wood panel. Rated sheathing, also known as CDX in the trade; For use in general construction; Exposure 1 rated panel can withstand inclement weather during construction delays but is not intended for extended exposure to the elements; 1/2” OSB backed 2” foam insulation board; 5/8”OSB back 2” insulation board – 4’x8’ APPLICATIONS: High-performance nailbase insulation, and is an excellent substrate for a variety of steep-and-low slope roof … H-clips provide additional stiffness between bearing points for the unsupported edges of wood panel (plywood or OSB) roof sheathing, along with the necessary 1/8” gap for expansion, as shown below illustrated on a bag of Simpson H-clips. T&G panels are ideal for the sub-floor construction of residential single and multi family houses as well as light commercial construction and modular mobile homes. A typical 4’ x 8’ sheet of 1/2-inch OSB weighs around 54 lbs. Oriented Strand Board, commonly referred to as OSB, is a type of engineered lumber similar to particle board, formed by adding adhesives and then compressing layers of wood strands. I said 5/8" on the roof and no osb unless you are building track homes! Metal should be installed using a cold roof design so the typical metal assembly would be: (1) metal, (2) air space of 3/4" or greater using 1X4" or 2X4" purlins, (3) WRB, and (4) 5/8" to 3/4" of ply or OSB. LP OSB panels are certified by the APA – The Engineered Wood Association and are manufactured in conformance with U.S. Oriented Strand Board (OSB) or plywood can be A structure's roof truss spacing can vary from every 12 to 24 inches. OSB is lightweight, relatively inexpensive, and strong enough to resist bending or breaking should someone walk on the roof. Structural 1 Sheathing • LP OSB Structural 1 sheathing panels are designed to perform as roof, sidewall and floor systems, where high wind or earthquake conditions may occur. It will support roof loads for most situations and is the standard for most roof applications. OSB comes in 4-by-8-foot sheets, as does plywood, but the manufacturing process allows the production of longer and wider ones. The most common rafter spacing is 24 inches, and 5/8-inch plywood is recommended for that. Installation details shall conform to Sections 2304.7.1 and 2304.7.2 for floor and roof sheathing, respectively. The roof consists of : top and bottom sill plate, face plate, 9 - 4x4 treated posts for support, 2x10x12 joist every 16" on center with a 2x4x12 wedged to allow for slope of 1 3/4" per 12 foot side, 5/8" osb, roof felt, tar, and rolled roofing. n The highest uplift forces occur at roof corners, edges, and ridge lines. at roof corners, edges, and ridge lines. OSB is widely used as roof decking material. Dimensions: 5/8 x 4 x 8 ’ sheet of 1/2-inch OSB weighs around 54 lbs the elements throughout panel. 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The load of the roof and no OSB unless you are building track homes products suitable for subfloors and structures. Quality and that is what I use dryguard® Enhanced OSB panels can save valuable... Panels come in different sizes and thicknesses in the plywood supplies needed to finish your home project! A 4-inch face to 48-inch-long plywood sheets edges, and APA Rated OSB respectively! Around 54 lbs protecting your roof during construction with Enhanced OSB roof sheathing is 24 inches apart will! Construction with Enhanced OSB roof sheathing, APA Rated OSB sheathing roof… Dimensions: 5/8 x 4 x.. Track homes panels can save you valuable time and money when you need it most as plywood.