Rationale

When this standard was first developed, silicone coatings were predominantly used on spray polyurethane roofs so it was incorporated into the title. Despite being in the title, there is virtually no mention of spray polyurethane foam in the standard and silicone coatings are used in many applications. It was therefore proposed to remove reference to spray polyurethane roofs in the title and the few mentions in the document. Moreover, a few editorial changes were made.