In wind-related performance, what does an uplift rating refer to?

In wind-related performance, what does an uplift rating refer to?

• A. A rating assigned to assemblies' resistance to wind uplift.
• B. A measure of insulation R-value.
• C. A qualitative aesthetic score.
• D. A cost index.

Answer: (A)

In wind-related performance, uplift rating shows how much upward force an assembled roof system can resist per unit area before it starts to fail. It comes from standardized tests that simulate wind lifting the roof and pulls the assembly to see at what pressure it detaches or buckles. This rating, often expressed in pounds per square foot, guides how the roof components—covering, fasteners, edging, and sealants—must be designed or installed to meet the wind resistance required for a given location. It’s a structural performance measure, not related to insulation value, aesthetics, or cost.

In wind-related performance, uplift rating shows how much upward force an assembled roof system can resist per unit area before it starts to fail. It comes from standardized tests that simulate wind lifting the roof and pulls the assembly to see at what pressure it detaches or buckles. This rating, often expressed in pounds per square foot, guides how the roof components—covering, fasteners, edging, and sealants—must be designed or installed to meet the wind resistance required for a given location. It’s a structural performance measure, not related to insulation value, aesthetics, or cost.