What is the typical installation method for BUR in cold environments?

Using cold process adhesives or modified bitumen is the typical installation method for built-up roofing (BUR) in cold environments. Cold process adhesives provide excellent bonding without the need for heat, which can be crucial in lower temperatures where hot mopping techniques may not be feasible due to the risk of the materials cooling too quickly.

Modified bitumen membranes are specifically designed to maintain flexibility and performance in colder climates, making them suitable for BUR applications where traditional hot methods could lead to issues such as improper adhesion or brittleness. This method allows contractors to effectively install the roofing system while ensuring that the materials perform optimally in terms of adhesion and durability, even in challenging weather conditions.

In contrast, hot mopping techniques involve using heated asphalt, which poses risks in cold environments, such as inadequate bonding or slower curing times. Liquid asphalt, while versatile, has similar limitations as hot mopping when it comes to colder temperatures. The installation of granular materials does not pertain to the actual application of BUR but instead refers to surface treatments or finishes, which do not address the primary method of installation in a cold environment.