Roof assemblies that are classified as Class C are effective against what level of fire-test exposure?

Class C roof assemblies are designed to provide a certain level of fire resistance, specifically effective against light fire-test exposure. This classification reflects materials that can withstand minor fire incidents without significant damage. They offer some protection but are not intended for high or extreme exposures, which require more robust materials categorized as Class A or B.

Understanding these classifications helps in selecting appropriate roofing materials for specific environments, particularly in areas prone to wildfires or where fire safety regulations are stringent. Recognizing the effectiveness of Class C in relation to light exposure allows for informed decisions in building construction and insulation that align with local fire safety codes and standards.