7/16-in (just under 1/2-in) x 4-ft x 8-ft OSB Sheathing

Charlotte Wood Middle School, Danville, California

It was 1991, and our company was framing the entire middle school. The Charlotte Wood Middle School was built out of Douglas Fir Lumber, Pressure Treated Plates, and different kinds of Plywood. I negotiated a contract with a lumber mill in Oregon to provide all the dimensional lumber for the project. I had lumber being delivered from their mill for months. GREAT PROJECT! Rick Aguilar - Cost Estimator

Overview

• If you’re looking for a strong and budget-friendly panel for construction projects, Oriented Strand Board (OSB) sheathing is one of the most common and dependable choices on the market. This 7/16-in thick, 4-ft by 8-ft sheet is a versatile building material designed for a wide range of structural applications.

  Key Features:

  • Durable Construction – Made by compressing layers of wood strands and adhesives, OSB is engineered to resist warping and splitting.

  • Standard Thickness – At 7/16-in (just under 1/2-in), it meets building code requirements for most wall, roof, and subfloor sheathing applications.

  • Uniform Strength – Unlike traditional plywood, OSB provides consistent strength across the entire panel, making it ideal for load-bearing uses.

  • Cost-Effective – A more affordable option compared to plywood, while still offering strong performance.

  • Sized for Efficiency – The 4-ft x 8-ft dimensions make it easy to handle, cut, and install on standard framing layouts.

  Common Uses:

  • Wall Sheathing – Provides a sturdy base for siding materials.

  • Roof Sheathing – Works under shingles or other roofing materials.

  • Subflooring – Often used under carpet, hardwood, or tile with proper underlayment.

  • DIY Projects – Great for shop projects, shelving, workbenches, and more when budget-friendly panels are needed.

This Plywood is on the higher end. Why?

• Why Choose OSB Sheathing?

  Builders and homeowners alike choose OSB sheathing for its strength, reliability, and value. It holds nails and screws securely, resists bending under pressure, and is engineered to perform consistently. Whether you’re framing a new home, repairing a roof, or taking on a weekend project, OSB sheathing is a dependable option that gets the job done without breaking the budget.

Ask Rick, example:“What’s the best plywood for subfloors? or “When should I use treated lumber instead of regular lumber?”

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