How does sheathing contribute to the structural integrity of the roof frame?

Sheathing is an essential component in the construction of a roof frame, and its primary role is to add strength and rigidity to the overall structure. It typically consists of sheets of plywood or oriented strand board (OSB) that are fastened to the roof rafters. This layer provides a continuous surface that reinforces the delicate framework of the rafters, helping to distribute loads such as snow, wind, and the weight of roofing materials evenly across the roof.

Additionally, the sheathing helps prevent the roof from sagging or flexing under these loads, enhancing the stability and durability of the entire roofing system. It is this added strength and rigidity that makes sheathing a critical element in ensuring that the roof can withstand various environmental stresses over time.