What can be a consequence of using a solvent as a carrier for a coating?

Using a solvent as a carrier for a coating can lead to staining due to asphalt bleed through because solvents can penetrate the surface of the roofing material and dissolve or soften underlying layers, especially if asphalt is present. This process may allow the asphalt to migrate to the surface of the coating, resulting in visible staining.

This phenomenon often occurs with certain coatings that are not compatible with roof materials or that don’t form a sufficiently thick barrier. When asphalt migrates to the surface, it not only affects the aesthetic appearance of the roof but may also compromise the protective qualities of the coating.

Other choices do not directly correlate with the consequence of using solvent-based coatings. For instance, increased insulation effectiveness pertains to thermal properties rather than the chemical interaction at play. Brittleness of the coating can result from other factors, such as the materials used in the formulation rather than the choice of a solvent. Decreased overall roof weight is not a common outcome of using solvent carriers because the weight primarily depends on other aspects, such as the total materials and system design, rather than the carrier used in the coating.