Hail storm system resources

Built to provide protection against hail damage, and keep structures and their occupants safe.1

GAF hail storm systems

Before the storm hits, count on FM-Approved GAF hail system solutions1 to help protect your investment. The cost of a hail storm can cause billions of dollars in damage — and experts predict the frequency of storms to increase. According to a 2018 NASA study, steady increases in carbon dioxide in the atmosphere may significantly increase ocean temperatures, which in turn may increase the frequency of extreme storms by as much as 60% by the end of the century.2

Our system benefits

Protects Against the Elements

Easy to Install

High R-Value

1Systems approved under FM 4470 - Very Severe Hail (Class 1-VSH). See FM Global Data Sheet 1-34 for more information. Visit RoofNav.com for approved assemblies.


3 GAF warranties and guarantees do not provide coverage against hail except where additional coverage is purchased for eligible jobs. Contact GAF for specific requirements. Refer to applicable warranty or guarantee, available at gaf.com, for complete coverage and restrictions.

Which GAF Hail Systems3 meets your roofing needs?

Hover to discover the layers of each system.

Is your building in a severe hail region?

Even if you live in an area of the country that gets moderate to severe hail, your best bet is to prepare for the most severe hail that may come your way

FM Global's U.S. hail zone map5

Top 5 states by number of hail events since 20206


601 hail events

South Dakota

377 hail events


341 hail events


341 hail events


313 hail events
6 Insurance Information Institute 2021, Facts + Statistics: Hail, https://www.iii.org/fact-statistic/facts-statistics-hail (using data sourced from the U.S. Department of Commerce, Storm Prediction Center, National Weather Service)

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Additional hail storm resources


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