What does the ASTM Material Standard also limit for aggregates?

The ASTM Material Standard specifically addresses the properties of aggregates used in roofing materials to ensure quality and performance. In this context, limiting moisture content is critical as excess moisture can affect the adhesion of roofing systems and lead to premature failure. Additionally, controlling dirtiness ensures that the aggregates are clean and free from contaminants that could impair the bonding and overall effectiveness of the roofing system. This focus on moisture content and cleanliness is crucial for maintaining durability and longevity in built-up roofing applications.