The roof is a commercial building’s first line of defense from natural hazards such as wind, rain, hail, ice, and snow. The roof is also the most vulnerable part of every building. Weather events seem to be getting more extreme every year, and if your roof is compromised during a severe weather event, it could sustain costly damage requiring repairs or even replacement. This guide provides best practices for commercial buildings to resist damage to roofs from thunderstorms, hail events, winds at the edges of tornadoes, hurricanes, other high-wind events, wildfire, and severe winter weather.