What nails are typically used to attach 1/2" fiberboard sheathing to wall frames?

The best choice for attaching 1/2" fiberboard sheathing to wall frames is typically roofing nails that are 3/4" long. This is due to several factors involved in the application of sheathing material.

Roofing nails are specially designed with a wide, flat head that helps to create a larger surface area for holding onto the fiberboard, preventing pull-through and ensuring a secure connection. The 3/4" length is also appropriate for properly anchoring the sheathing without penetrating too deeply into the wall frame, which could potentially cause damage or impede insulation or wiring. The shorter length reduces the risk of splitting the framing lumber, while still providing adequate hold for the light-weight fiberboard material.

Using nails that are too long could penetrate too far and cause issues, while nails that are too short may not provide sufficient holding power. Therefore, the choice of 3/4" roofing nails strikes a perfect balance for this specific application.