What is the maximum moisture percentage for crushed roofing slag?

The maximum moisture percentage for crushed roofing slag is set at 5.0%. This specification is crucial in roofing applications because excess moisture can adversely affect the performance and longevity of roofing materials. High moisture content can lead to issues such as freeze-thaw cycling, which can compromise the integrity of the roofing system and potentially lead to leaks or other failures.

Maintaining the moisture percentage at this level ensures that the crushed roofing slag performs effectively as a surfacing material, enhancing durability and providing the necessary protection for the underlying roof system. Therefore, understanding this limit is vital for anyone involved in the installation or maintenance of Built-Up Roofing systems.