Roof blisters and buckles can appear in a variety of different substrates and are sure signs that there are issues with the roof. Always use the appropriate compounds when sealing in a repair. If these defects are not properly addressed before they get excessively large or split apart, moisture and debris will enter the roof system. A restorative coating is meant to extend the life of a clean, dry, and sound roof. Understanding how to diagnose and repair these issues is vital to the success of any roof restoration project.