What type of roof test is characterized by a continuous flame application?

The type of roof test characterized by a continuous flame application is the flame spread test. This test is designed to evaluate how quickly flames can spread across a given material when subjected to fire. The continuous flame application simulates real-world conditions where an ignition source remains active, allowing for a thorough assessment of the material's fire performance.

In this test, the roof assembly is exposed to a consistent flame, which helps determine the speed of flame propagation and the material's resistance to combustion. This information is crucial for fire safety regulations and helps ensure that roofing systems meet specific safety standards to mitigate the risk of fire spread in buildings.

Understanding flame spread is vital in construction and fire safety management, as it directly influences code compliance and the selection of appropriate materials for different types of structures.