What roof test involves attaching ignited brands to the roof?

The correct answer pertains to a specific method known as the burning brand test, which is utilized to evaluate the fire resistance of roofing materials. In this test, ignited brands are applied directly to the roof surface to assess how well it can resist ignition and prevent the spread of fire. The burning brands simulate the types of embers and fire sources that a roof might encounter during a fire incident, allowing inspectors to determine if the materials can withstand those conditions without sustaining significant damage or catching fire.

This testing method is crucial for ensuring that roofs provide adequate protection against fire, particularly in areas susceptible to wildfires or in urban environments with high fire risk. It helps to establish a standard for roofing materials and their ability to protect a building.

In contrast, other options refer to different testing methodologies that do not involve the use of ignited brands. For instance, the intermittent flame test may evaluate how materials react to occasional flames rather than continuous exposure, while the flying brand test specifically assesses how roofing materials respond to simulated wind-driven embers. The continuous flame test focuses on resistance to ongoing flames, not the application of burning brands as seen in the burning brand test. Each of these tests serves distinct purposes within fire safety protocols, but the burning brand test is the one that