Roof area dividers are raised curbs attached to the structural deck and then properly flashed. What are these features called?

• A. Roof area dividers
• B. Raised curbs
• C. Flashings
• D. Deck attachments

Answer: (A)

A roof area divider is a raised curb that sits on the structural deck and is flashed to seal it. The key idea is that this feature defines and separates areas on the roof while providing a base for waterproofing, so the term “roof area divider” describes both the physical curb and its function on the roof. The raised curb by itself would just be a piece of geometry, and flashing is the waterproofing applied around it; deck attachments are hardware, not the boundary feature. Together the concept of a raised curb that divides roof regions and is properly flashed is captured by the term roof area divider.