scope:

These methods cover the measurement of the relative fire characteristics of roof coverings under simulated fire originating outside the building. They are applicable to roof coverings intended for installation on either combustible or noncombustible decks, when applied as intended for use. The following methods are included:

Intermittent flame exposure test.

Spread of flame test.

Burning brand test.

Flying brand test.

Rain test.

Three classes of fire test exposure are described:

Class A Tests are applicable to roof coverings that are effective against severe test exposure, afford a high degree of fire protection to the roof deck, do not slip from position, and do not present a flying brand hazard.

Class B Tests are applicable to roof coverings that are effective against moderate test exposure, afford a moderate degree of fire protection to the roof deck, do not slip from position, and do not present a flying brand hazard.

Class C Tests are applicable to roof coverings that are effective against light test exposure, afford a light degree of fire protection to the roof deck, do not slip from position, and do not present a flying brand hazard.

This standard should be used to measure and describe the properties of materials. products, or assemblies in response to heat and flame under controlled laboratory conditions and should not be used to describe or appraise the fire hazard or fire risk of materials, products, or assemblies under actual fire conditions. However, results of this test may be used as elements of a fire risk assessment which takes into account all of the factors which are pertinent to an assessment of the fire hazard of a particular end use.