Damage to roofing systems typically occurs during high wind events in which the wind lifts the roofing system from the substrate or deck. In some cases, the roof is completely removed from the structure.
The air pressures that lift an airplane into the air (negative air pressure) are the same pressures that can lift a roof. The ability of a roofing system to resist this uplift is simply called wind uplift resistance.
Insurance companies, engineering companies (such as Factory Mutual Global, FMG), risk management companies, and building owners may want to determine the uplift resistance (expressed in psf) that a roofing system may resist and stay in place.