Surface covering building materials resistant to microbial growth staining

摘要

The present disclosure relates to surface covering building materials for roofs, sidewalls and other exterior surfaces exposed tb the weather such as, but not limited to, asphaltic and non-asphaltic roofing materials, wherein said surface covering building materials exhibit long-term resistance to microbial growth-induced staining. The surface covering building materials include a component having antimicrobial potential which consists essentially of (a) a copper component or a tin component and (b) a barium metaborate monohydrate component.