What is the maximum thickness of plywood sheathing required for walls with height above the interior finish?

The correct maximum thickness of plywood sheathing required for walls with a height above the interior finish is 1/2 inch. This standard is often dictated by local building codes and ensures that the wall can adequately support loads while maintaining structural integrity. In many construction applications, especially residential ones, a thickness of 1/2 inch is commonly used for wall sheathing to balance strength with weight and ease of handling.

Using plywood that is thicker than necessary can add unnecessary weight to the structure, complicate installation, and potentially increase costs. While thicker materials like 5/8 inch or 3/4 inch do exist, they are typically utilized in specific applications that necessitate additional strength or soundproofing, rather than standard wall applications where 1/2 inch is adequate. Thus, it is important to adhere to the requirements set forth in local regulations to ensure compliance and safety in construction practices.