Question

1. when thin roof sheathing is installed on wide roof framing, it is more prone to sagging. which of the following is not typically employed to prevent this?

image of roof framing and sheathing

○ h - clips
○ a modified bitumen membrane on the sheathing
○ thicker plywood
○ tongue - and - groove ply
○ blocking

Explanation:

To determine which option is not used to prevent sagging of thin roof sheathing on wide framing:

• H - clips, thicker plywood, tongue - and - groove plywood, and blocking are structural methods to support sheathing and prevent sagging.
• A modified bitumen membrane is a roofing membrane (for waterproofing, etc.), not a structural measure to prevent sheathing sagging.

Answer:

A modified bitumen membrane on the sheathing