Weathering

Exposure to the weather generally dictates deterioration of roofing systems, depending on kinds of materials and the conditions of exposuure.

In general, inorganic roofing materials tend to deteriorate less rapidly from exposure than organic roofing materials. Hail may damage all types of roofing materials. Exposure to air pollutants and industrial or salt-laden atmospheres may accelerate the deterioration process of some roofing materials.