Which factor plays a significant role in the longevity of a BUR roof?

The quality of the materials used and the installation process is crucial in determining the longevity of a Built-Up Roofing (BUR) system. High-quality materials enhance the durability and resistance of the roofing system to environmental factors such as UV radiation, moisture, and temperature fluctuations. During installation, following proper techniques and ensuring that each layer is applied correctly ensures a strong bond and integrity of the roofing system, which minimizes the risk of leaks and failures down the line.

Moreover, the installation process also involves proper drainage considerations, which prevent water pooling and extend the lifespan of the roof. Overall, using superior materials along with skilled installation practices establishes a robust roofing system that can withstand the test of time, significantly contributing to its overall lifespan and performance.

While the cost of materials, insulation type, and maintenance frequency are important considerations, they do not directly influence the inherent quality and execution of the roofing system itself, which is the foundation of a BUR roof's longevity.