Coating concerns

Building code compliance for roof coatings is limited

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.

IBC 2018

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: