Protective roof coatings sometimes are used as roof covering surfacings to provide an additional layer of weather protection. Specific roof coatings also can enhance a roof covering's fire resistance, solar reflectivity and aesthetic appearance. However, not all roof coating products on the market comply with building code requirements.
In the International Building Code,® 2018 Edition, Chapter 2—Definitions, "roof coating" is defined as "a fluid-applied, adhered coating used for roof maintenance or roof repair, or as a component of a roof covering or roof assembly." The italicized words denote specific additional terms also defined in Chapter 2.
In IBC 2018's Chapter 15—Roof Assemblies and Rooftop Structures, Section 1507.10-Built-up Roofs, Table 1507.10.2-Built-up Roofing Material Standards lists the following roof coating products as acceptable to be applied to built-up membrane roof systems: