Commercial Roof Sealant
There are all many types of elastameric coatings and asphalt sealants used on commercials roofs. Elastameric coating is used to provide longevity to an aging roof system. Much more affordable than new roof systems. Asphalt sealants are used for temporary and sometimes permanent roof repairs.
Research the coating that is compatible with your existing roofing system by contacting a licensed professional for their recommendations for repair products and procedures.