What is the requirement for cladding attachment over foam sheathing to wood framing?

The requirement for cladding attachment over foam sheathing to wood framing is that it must meet or exceed the fastening requirements. This ensures that the cladding is adequately secured to the structure, providing necessary stability and resistance to weather-related forces, such as wind or moisture.

Proper fastening is critical in maintaining the integrity of the building envelope, especially when foam sheathing is involved, as this type of insulation can affect the overall structural performance. Fasteners must penetrate through the foam and securely engage with the wood framing to create a reliable connection. This connection is essential not only for structural purposes but also for ensuring that the cladding performs effectively against environmental conditions.

The other options fail to emphasize the necessary mechanical attachment required for cladding. For example, installing without fasteners could compromise the stability, and relying solely on adhesive materials may not provide the same strength and reliability needed under various load conditions. Additionally, having a cladding system that is independent of structural integrity would negate the fundamental requirement for secure attachment to the building's framing, which could lead to significant durability issues over time.