From the Institute for Business & Home Safety
- There are approximately 3,000 hailstorms annually in the United States, resulting in average insured losses of $1.6 billion.
- International Building Code currently does not require the consideration of impact resistance in the selection of roofing materials.
- IBHS has proposed changes to the International Codes that would require this consideration in moderate and severe hail exposure areas.
- The lifespan of an average roof is 20 years:
- Roofs in severe hail-prone areas must be replaced every seven to 10 years, according to insurance industry data.
- States in the Great Plains and Southeast can expect hailstorms producing stones of least 1.5 inches in diameter within the life of a typical roof.
- Costs and benefits of impact-resistant roofing materials:
- $75/square approximately installed;
- $2,200 in added costs for 30 squares of shingles.
- The loss rate for impact-resistant metal roofs is 13 percent; 53 percent lower than asphalt, clay or tile.
- Products classified in accordance with UL 2218 standard have been shown to sustain significantly less damage after being impacted by 1 to 2-inch hailstones.
- A study by the Institute for Business & Home Safety found:
- 44 percent of all non-impact resistant, single-family roofs investigated needed repair or replacement after being struck by hailstones with diameters of 1-2 inches.
- Requiring impact-resistant roofing materials in vulnerable areas would result in a 50 percent reduction in hail-related property losses.
- A recent hail-loss investigation of 320,000 homes in 115 zip codes, with 77,000 claims found:
- 40 percent fewer claims for homes with impact-resistant roofs;
- 55 percent reduction in losses for homes with impact resistant roofs;
- Homeowner savings of $200 to $300.
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