Several IBHS closed claims studies have shown that older buildings have higher claim frequencies in a variety of natural disasters. In some cases, this may be due to changes in building codes requiring stronger construction for new buildings. In other instances, it could be due to degradation of building materials or poor maintenance practices for older buildings. Many roofing products are known to degrade over time, with the amount of degradation expected to vary with the local environment. Controlled aging of roofs in various climates coupled with systematic testing for wind and impact resistance will provide needed data to improve vulnerability assessments.
IBHS has initiated a long-term aging program studying the performance of aged roofing materials when subjected to high wind or impact tests.