In 2022, insured losses from hailstorms topped $10 billion in the United States for the 15th year in a row. Hailstorms account for 70 percent of the average annual property losses from severe convective storms in the U.S., according to the National Center for Atmospheric Research (NCAR).
Hail resistance is one of the performance requirements included in Approval Standard 4470 (“Single Ply, Polymer-Modified Bitumen Sheet, Build-Up Roof (BUR) and Liquid Applied Roof Assemblies for Use in Class 1 and Noncombustible Roof Deck Construction”). In the past, the hail resistance classifications included Moderate Hail (MH) and Severe Hail (SH).