Your Roofing Guide for Extreme Weather Is Here

Hail isn't rare anymore. It's a major cause of billion-dollar storm disasters-and it's only getting worse. Get exclusive insights for commercial roofing including:

Storm frequency data and real-world damage examples
How other national organizations are reacting to increasing hail risk
FM Global’s Very Severe Hail (VSH) classification explained
Insights into the stringent testing FM conducts for VSH approval
Key comparisons between commonly used cover boards

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A rendering of an electronic tablet shows the first page of the guide, Commercial Roofing for Extreme Weather.

A look at what you'll find in the guide...

An infographic titled, "The Steady Rise of Severe Weather" shows data on severe weather disasters and their financial impact in the United States from 1980 to 2024. A large graph in the center displays two lines: the number of events (in yellow and red bars) and the associated cost (in white line) measured in billions of dollars. The data shows a steady increase in both the frequency and cost of billion-dollar severe storm disasters, with a notable peak in 2024 approaching $60 billion. On the left, there's text explaining how increasing severe weather events influence building design, emphasizing the need for resilient roofing systems. It highlights that catastrophic weather events like hail, tornadoes, lightning, and high winds are becoming more frequent and costly. A circular graphic in the bottom right corner visually represents the proportion of damage caused by hailstorms compared to other severe weather events, noting that over 50% of property losses from severe storm disasters are due to hail. The overall tone underscores the importance of adapting building practices to account for the increasing threat and damage of severe weather.

An infographic titled “The High Price of Storm Damage” highlights the severe impact of hailstorms in the U.S., especially in 2022 and 2024. It shows how hail can cause excessive damage to cars, homes, and commercial buildings, and also harm livestock and people. The text states that in 2022, insured losses related to hailstorms exceeded $10 billion in the U.S. for the 15th consecutive year. On the right, images depict severe damage from hailstorms: flooded indoor areas, damaged siding, and a large piece of hail being held in a gloved hand. A map of the U.S. pinpoints three major loss areas: $2.7 Billion: A 2017 hailstorm in Denver, Colorado, with golf ball-sized hail forced a shopping mall to close for six months due to roof damage. $2.3 Billion: In May 2024, hail damage across north and east Texas caused extensive damage to homes, vehicles, and infrastructure. $3.0 Billion: In June 2024, severe hailstorms in eastern Colorado with golf ball- to baseball-sized hail and high winds caused damage that extended into Texas. A final note emphasizes how very severe hail can devastate entire neighborhoods, underscoring the need for more resilient roof systems.

An infographic titled, “How Are the Nation and Roofing Industry Reacting?” focuses on how natural disasters have driven organizations to plan for resilience. The background shows dark clouds over a city skyline. The middle section has a green banner with the text “Don’t miss the rest,” encouraging viewers to scroll to a form below to receive a roofing guide for extreme weather. The first page of the guide, titled “The Steady Rise of Severe Weather,” appears on a tablet screen in the bottom right corner. The guide features a graph showing the rising costs of billion-dollar severe storm disasters over time and a circular graphic indicating that over 50% of property losses are attributed to hailstorms. The overall message emphasizes the importance of building resilience in roofing systems to withstand the increasing frequency of severe weather events.

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Already know the risks? See how DensDeck® StormX® Prime Roof Board helps you get your roofs ready.

DensDeck® StormX® Prime Roof Board was the industry’s first gypsum cover board FM classified for VSH in approved single-ply assemblies. With proven performance against real-world storms, DensDeck® StormX® Prime Roof Board sets a new standard for low-slope commercial rooftop resilience with:

A compressive strength of 1,800 PSI
Fire resistance: Non-combustible per ASTM-E136
A moisture- and mold-resistant¹ core and facer
STC 50+ acoustic performance potential

Visit the product page to access:

Full system compatibility and application guidance
FM approvals, UL listings and product certifications
Technical documents and submittal packages
Additional resources for architects, contractors and consultants

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^1. The score of 10 in the ASTM D3273 test indicates no mold growth in a 4-week controlled laboratory test. The mold resistance of any building product when used in actual job site conditions may not produce the same results as were achieved in the controlled, laboratory setting. No material can be considered mold proof. For additional information concerning mold resistance, see www.buildgp.com/safetyinfo.