What main advantage does a cold-adhesive built-up roof system have when properly formulated?

A cold-adhesive built-up roof system, when properly formulated, indeed has the main advantage of potentially being of much higher quality than a hot asphalt system. Cold adhesives do not require heat, which reduces the risk of thermal damage to the roofing materials and the structure underneath. This method allows for a more consistent application of adhesive, which can enhance the bond between roofing layers and improve overall durability and longevity of the roofing system.

The use of cold adhesives can also lead to a cleaner installation process as it minimizes odors and fumes associated with hot asphalt. Furthermore, the consistent bonding can contribute to better performance regarding weather resistance and overall effectiveness, making it a preferred choice under certain conditions.

While other advantages mentioned in the options relate to performance and cost, the primary quality benefit of cold-adhesive systems is their superior performance when applied correctly. This emphasis on quality is a significant reason this choice stands out.