How does a "cold applied" BUR differ from a "hot applied" BUR?

The distinction between "cold applied" and "hot applied" BUR (Built-Up Roofing) lies in the method of application and the materials used. Cold applied BUR employs adhesives at ambient temperatures, allowing for installation without the need for heating materials. This method facilitates easier application in various weather conditions, as it avoids the complexities and safety concerns associated with working with heated materials.

In contrast, hot applied BUR involves the use of molten bitumen, which must be heated to a specific temperature before application. This heating process allows for better integration of the layers as the bitumen flows and bonds to the substrate and other layers when applied. While hot applied systems often provide a robust bond and can offer heightened durability, the application requires caution to prevent burns and manage the risks associated with handling hot materials.

Understanding the difference between these two application methods is crucial for roofing professionals as it influences choice based on conditions such as weather, safety, and desired performance characteristics of the roofing system.