ASTM E108-20a PDF Download

ASTM E108-20a is a standard that provides test methods for evaluating the fire performance of roof coverings. The standard aims to give a basis for comparing different roof coverings and determining their ability to resist fire penetration, spread of flame, and generation of flying burning materials.

The test methods described in the standard involve subjecting the roof coverings to simulated fire exposure and determining their performance under various conditions. These tests include the measurement of surface spread of flame, resistance to fire penetration, and the development of flying brands under wind conditions.

It is important to note that the standard does not cover the fire resistance characteristics of roof coverings when exposed to fires originating from inside the building. The test methods described in the standard are conducted on inclined test decks, and the severity of the test exposure reduces as the slope of the test deck decreases.

The standard also defines three classes of fire test exposure, namely Class A, Class B, and Class C, which represent different levels of fire protection and resistance provided by the roof coverings. It should be noted that this standard is used for laboratory testing under controlled conditions and does not incorporate all factors required for assessing fire hazards in actual fire conditions. Adequate safety precautions should be taken during the fire testing process.