Subfloor systems are exposed to constant load, movement and environmental change. Panels must be able to handle:

• Structural loads
• Repeated foot traffic
• Moisture exposure during construction
• Long-term dimensional stability

Incorrect selection can lead to deflection, noise and premature failure.

Structural plywood is manufactured to meet specific strength requirements under Australian standards. It is designed to span joists and maintain integrity under load.

For flooring applications, this provides:

• Reliable load distribution
• Reduced movement over time
• Improved fixing performance

Bord’s plywood range includes options suitable for structural flooring applications.

Thickness plays a critical role in subfloor performance. Panels that are too thin can deflect under load, while over-specification can increase cost unnecessarily.

Selecting the right thickness depends on:

• Joist spacing
• Load requirements
• Project type

These considerations align with guidance in Plywood Thickness and Panel Selection Guide for Australian Builders and Designers.

Subfloors are often exposed to moisture before final finishes are installed. This can impact panel stability if the material is not suited to the environment.

Marine or exterior-grade plywood may be required depending on exposure conditions. This is explored further in Marine Plywood vs Exterior Plywood: What Australian Builders Often Get Wrong.

The performance of a flooring system depends on selecting the right plywood early in the project. Aligning grade, thickness and exposure conditions helps prevent issues that are difficult to correct later.