Osb thickness chart For range of thicknesses, see Table 5 of APA’s Panel Design Specification, Form D510. Jul 14, 2022 · When looking at the attic or shed flooring, look at a subfloor's horizontal shear strength. OSB boards can be used for loft boarding within a building, creating a boarded surface that can be used for storage or as a loft conversion. ) Determine the appropriate fastening schedule for the structural sheathing. This size meets the general and 6-1/2-inch. Edge support is required for roof panels with a Thickness Application Span Rating Pack Size 23/32” Sanded Groove or Squared Edge Single Layer Flooring 24” O. Oct 17, 2024 · However, the thickness of the OSB is where you need to pay attention. 90 21. The nominal thicknesses are fairly standard, but the actual thicknesses tend to vary. Notes: 1 OSB meets the minimum performance criteria in accordance with APA PRP-108, Performance Standards and Policies for Structural-Use Panels and the Voluntary Product Sep 23, 2023 · Common OSB Thickness Options. Jan 1, 2024 · Panel thickness is a primary driver of OSB’s load-bearing capacity and stiffness for roof sheathing use. 47 Pieces 19/32” Sanded Groove or Squared Edge Single Layer Flooring 20” O. x 4 ft. Model# 1366588 $ 21. Mar 25, 2025 · Calculator and charts for plywood weights, OSB weights and weights for MDF, MDO, and particle board. See Table 1 for common OSB products and their specifications. 8mm less than the nominal thickness. 4 pounds per square foot. A schematic illustrating strand orientation of a typical OSB. 5mm) 7/16 inch (11mm) 1/2 inch (12. Mar 6, 2024 · Different Thickness Levels. Typical size is 4 ft x 8 ft, but other sizes may also be produced. The EPS core thickness for these nominal wall thicknesses typically correspond to dimensional lumber sizes of 3-1/2-inch and 5-1/2-inch. A 4-foot by 8-foot sheet of OSB weighs about 77 pounds, which is heavy enough to require two workers to handle it. Thicker panels better resist deflection between framing members and have higher allowable roof loads. Most OSB: Which Board Thickness Are Suitable for What? oriented strand board (OSB). To successfully install materials like siding, luxury vinyl planks, or shingles, you need a supportive and durable layer between the studs, floor joists, or rafters. ) Span Rating 3/8 7/16 15/32 1/2 19/32 5/8 23/32 3/4 7/8 1 1-1/8 We also offer LP® LongLength® and LongLength® XL OSB Sheathing, ideal for increased jobsite efficiency when constructing standard height and taller ceilings and for helping to achieve code compliance in wind and seismic zones. On average, the actual thickness is approximately 1/32” or 0. Figure 2. Common OSB thicknesses for roofing include: 3/8 inch (9. A general flow chart of OSB production. 1/2” Sheathing Sub Floor 16” O. Roof sheathing thickness can vary depending on factors such as building codes, roof design, and local climate conditions. Panels branded as TallWall®, Windstorm®, and QuakeZone® are intended to be installed vertically. . Roof Roof panels are to be installed with the long dimension perpendicular to supports, continuous over two or more spans, and have a minimum width of 24". To find out how much sheathing you’ll need once you determine the proper thickness, calculate your roof’s square footage and divide that by the square footage per sheet of sheathing ForceField 7/16 in. Lowood. 55 Pieces 5/8” Sheathing Sub Floor 20” O. Plywood looks like solid wood, has a smoother finish, holds nails better, can be used for cabinetry, and has better impact strength. This equates to a SIP wall thickness that is marginally thicker than the conventionally framed wall Dec 12, 2024 · The wafers or strands used in the manufacture of OSB are generally up to 150 mm (6 in) long in the grain direction, 25 mm (1 in) wide and less than 1 mm (1/32″) in thickness. Find out the thickness, density, strength, bond, swelling, formaldehyde and moisture content of different OSB panels. How to read the grading stamps and some sample OSB and plywood ratings are provided. Minimum: 7/16” thickness. *Performance category replaces the fractional nominal thickness used in PS2. Jul 16, 2024 · In most cases, 7/16 of an inch when working with OSB or 1/2 an inch for plywood will be the minimum thickness you should choose for lighter roofing materials. 0 Installation LP OSB sheathing panels are designed for use in roof, wall and subfloor systems in commercial and residential projects, maintenance, remodeling or new construction. Here’s a brief overview of each: 7/16-Inch OSB: This thickness is commonly used for wall sheathing in residential construction. OSB is available in nominal thicknesses from 15/64 (6mm) to 1-1/2” (40mm). It provides adequate strength Figures 1 and 2 illustrate strand orientation of typical OSB and a general manufacturing flow chart of OSB, respectively. Loft Boarding. Find the thickness of OSB panels in different categories and sizes from APA-trademarked products. Also, OSB panels can be an advantage when flooring a big or odd-size shed, reducing the number of joints on a floor. Learn about OSB composition, properties, code acceptances, and applications from APA publications. Aug 4, 2023 · capacity is based on panel thickness. Charts have weights per standard sheet and per square foot. 55 Pieces Roof 40” O. OSB is composed of thin rectangular-shaped wood strands arranged in layers at right angles to one another, which are laid up into mats that form a panel. Two of the most common thickness options for OSB wall sheathing are 7/16-inch and 1/2-inch. Jan 7, 2025 · The average cost of OSB is $30 to $75 per 4-by-8-foot sheet, depending on the type and thickness. 90 Canadian OSB panels conforming to CSA O325 are idenfied by a panel mark containing the following informaon: the manufacturer’s name or logo and mill number; the CSA reference standard CSA O325; the span rang and end use; the nominal thickness; the direcon of face alignment; the date code; the OSB boards offer great strength and hold nails well. The Engineered Wood Association has a labeling system to grade lumber for its recommended use. OSB has twice the horizontal shear strength of plywood. In Canada, OSB panels are manufactured to meet the requirements of the CSA O325 standard. 65 Pieces Wall 24 OSB is made from real wood OSB is manufactured in a cross-oriented pattern similar to plywood to create a strong, stiff structural panel. Whether you need the compact strength of 9mm OSB sheets for smaller applications, the robust versatility of 11mm and 15mm boards for flooring and roofing, or the heavy-duty performance of 18mm OSB for high-load bearing constructions, we've got you covered. It's a better option than plywood for subflooring in attics and sheds. OSB is bonded with fully waterproof adhesives. SPAN RATING AND NOMINAL THICKNESS TABLE *Adjustment factor for Wind and Seismic may not apply depending on the local building code adopted and/or load combination factors. OSB sheathing panels comply with the following industry standards and certifications. Oriented Strand Board and Waferboard. The typical OSB facer used with SIPs is 7/16-inch in thickness. x 8 ft. 2. (c) Tabulated values are based on the most conservative plywood construction, as shown in Table 6. Select the appropriate thickness for wood structural sheathing panels. Roof 32” O. Commonly square edge, but may be produced with tongue and groove edges. Some capacities may be increased by application of formulas in Panel Design Specification, Form D510. Span rating: OSB panels are rated for specific truss spacings, usually up to 24 inches. Figure 1. In most cases, the minimum OSB thickness for roof decking is 7/16 inch (11mm). 9mm) 3/4 inch (19mm) Minimum OSB Thickness for Roof Decking. 4 Common Performance Categories And Corresponding Span Ratings Performance Category Span Rating 3/8 24/0 7/16 24/16 15/32 32/16 19/32 40/20 23/32 48/24 3. Once wet, OSB stays wet for a long time—slowing down the project. Once swollen, OSB will not compact to its original size. It provides a sturdy surface for attaching exterior finishes and offers structural support to A guide to various OSB products with technical data and applications. The most common thickness levels for roof sheathing are: 7/16 inch: This is the standard thickness for OSB roof sheathing in many residential construction projects. C. Our 8x4 OSB sheets are a popular choice, offering both convenience and quality in each board. When looking to buy boards for external wall sheathing, it’s important to opt for the moisture resistance of OSB3 or OSB4. (Exception: 3/8” for gable end walls structural sheathing. • LP OSB Structural panels are quality verified by APA, and are manu- Oct 31, 2024 · OSB has become increasingly popular for roof sheathing due to its cost-effectiveness and performance characteristics: Thickness: Builders recommend ⅝-inch OSB for roof applications. Determine the amount and location of braced walls (shear walls) required at each story of the house. Thickness to thickness, though, OSB is 30% to 50% less expensive. OSB Thickness Chart. OSB has better shear strength, more consistent density, and is less permeable to moisture. From J. 7mm) 5/8 inch (15. Oriented Strand Board Wall and Roof Panel. Apr 3, 2023 · OSB is heavier than plywood, weighing about 2. Relationship Between Span Rating and Nominal Thickness for OSB(a) Nominal Thickness(b) (in. 1997. SPECIFICATION DETAIL : Thicknesses (mm) 15, 18 Dimensions 1250 x 597, 2397 x 597, 1250 x 397, • 2397 x 397 Manufactured with OSB/3 Environmental certification Plywood and OSB (oriented strand board) has a grading system. 7/16 inch falls on the thinner side of typical OSB sheathing panel thickness: 1/4 inch: Rarely used structurally; 7/16 inch: Minimum for (b) Nominal thickness may vary within Span Rating. Find out the thicknesses, sizes and weights of oriented strand board (OSB) panels in imperial and metric units. tazhg fli ier wyho rpqrlns rpqi hfimzf usiwheq jensb mnvg cxg gghd osfqu nycfxji wybj