OSB Vs. Plywood

OSB (Oriented Strand Board) and plywood are both engineered wood products commonly used in construction, but they have some differences:

Osb next to plywood
1/ Composition:
  • OSB is made from small, thin wood strands that are layered and oriented in specific directions and then compressed and bonded together with wax and adhesive.
  • Plywood is made from thin sheets of wood veneer that are glued together with each layer’s grain perpendicular to the adjacent layer.

2/ Appearance:

  • OSB has a rough and uneven surface with visible wood strands.
  • Plywood has a smoother and more uniform surface with visible layers of wood veneer.

3/ Strength and stiffness:

  • OSB tends to be stronger and stiffer than plywood due to its layered construction and the orientation of wood strands.
  • Plywood is also strong and stiff but may have more variability depending on the quality of the wood veneer used.

4/ Moisture resistance:

  • OSB is more susceptible to swelling and delamination when exposed to moisture compared to plywood.
  • Plywood, especially marine-grade plywood, is more resistant to moisture and is often used in applications where water exposure is a concern.

6/ Cost:

  • OSB is generally less expensive than plywood, making it a popular choice for projects where cost is a significant factor.

Both OSB and plywood have their advantages and are suitable for different applications depending on factors such as cost, strength requirements, and moisture resistance.

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