How should inspectors evaluate roof decks?

When evaluating roof decks, inspectors focus primarily on identifying signs of failure. This approach is crucial because the primary function of a roof deck is to provide structural support and ensure water drainage. Inspectors look for issues such as sagging, cracking, or any material deterioration that could indicate a failure in the roof's structural integrity. Assessing these signs helps determine whether the roof deck is sound and if it will continue to function effectively.

Other methods, such as measuring slopes or counting shingles, may provide additional insights, but they don’t directly address the critical need to check whether the roof is structurally sound and able to withstand environmental stresses. Aesthetic appeal is also not a primary concern during an inspection, as the main goal is to ensure safety and functionality rather than visual aspects.