To limit the probability of the inadequate adhesion of plies to each other, which could lead to inadequate tensile strength, resistance to traffic loads or resistance to water infiltration and freeze-thaw cycling, which could lead to tearing or puncturing of membranes, which could lead to water penetrating directly to roof decking or sheathing, which could lead to deterioration, which could lead to the structural failure of roofs or assemblies protected by roofs, which could lead to harm to persons.