OSB vs. Plywood: Which Is Better for Construction?
It depends on the application. OSB and plywood are both widely used structural wood panels, but each has characteristics that make it better suited to different jobs. Factors such as the intended use, moisture exposure, project specifications, and budget can all influence which panel is the better choice.
Key Differences at a Glance
- Both OSB and plywood are commonly used for wall, roof, and floor sheathing.
- OSB is manufactured from wood strands bonded together in layers, while plywood is made from thin layers of wood veneer.
- OSB is often a cost-effective option for large sheathing applications.
- Plywood can offer advantages where moisture exposure and drying are concerns.
- The right choice depends on the application and specifications of the project.
What Is the Difference Between OSB and Plywood?
OSB, or oriented strand board, is an engineered wood panel made from wood strands arranged in layers and bonded together. Plywood is manufactured by bonding multiple thin layers of wood veneer together, with the grain direction alternating between layers.
Both products are engineered to provide strength and consistency and are commonly used throughout residential and commercial construction.
OSB vs. Plywood at a Glance
| OSB | Plywood | |
|---|---|---|
| Made From | Wood strands arranged in layers | Thin layers of wood veneer |
| Common Uses | Wall, roof, and floor sheathing | Wall and roof sheathing, subfloors, and other construction applications |
| Cost | Often more economical | Often more expensive |
| Moisture Considerations | Can take longer to dry after significant moisture exposure | Generally dries more quickly after getting wet |
| Options | Available in various sizes and thicknesses | Available in numerous types, grades, and thicknesses |
When Is OSB a Good Choice?
OSB is widely used for wall, roof, and floor sheathing and is often an economical choice when a project requires a large quantity of structural panels. It is manufactured in consistent sheets and is available in a range of sizes and thicknesses for different construction applications.
When Is Plywood a Good Choice?
Plywood is also commonly used for sheathing, subfloors, roofing, and other construction applications. It may be preferred in situations where moisture exposure and drying are considerations, as well as for projects where a particular plywood grade or performance characteristic is specified.
Which Should You Choose?
There isn't one answer for every project. OSB can be an economical and reliable choice for many common sheathing applications, while plywood may be preferred for other applications based on moisture conditions, project specifications, or the particular performance requirements of the job.
Ultimately, the choice should be based on what you're building, and the type, grade, and thickness of panel required for the project.
Frequently Asked Questions
Are OSB and plywood manufactured in Canada?
Yes. The vast majority of the OSB and plywood products carried by Standard Building Supplies are manufactured in Canada. Product origin can vary by manufacturer and specific panel, so speak with our team if Canadian-made material is a requirement for your project.
Is OSB cheaper than plywood?
OSB is often less expensive than comparable plywood, which can make it an economical choice for projects requiring large quantities of structural sheathing. Pricing varies by product and market conditions.
Can OSB and plywood both be used for sheathing?
Yes. Both OSB and plywood are commonly used for wall and roof sheathing. The appropriate panel should be selected based on the project's specifications and structural requirements.
Which handles moisture better, OSB or plywood?
Both products are designed for construction applications, but they can respond differently to moisture. Plywood generally dries more quickly after getting wet, while OSB can be more susceptible to swelling, particularly along panel edges, after prolonged moisture exposure.
How do I know which panel my project requires?
Check the project specifications, required panel grade and thickness, span requirements, and applicable building requirements. When in doubt, speak with your contractor, designer, or building material supplier before ordering.
Find the Right Panel for Your Project
Standard Building Supplies carries a wide selection of OSB, plywood, and other panel products for construction projects throughout B.C. If you're unsure which product is appropriate for your project, speak with the Standard Building Supplies team about your material requirements.
