There’s a multitude of complications that can arise during the course of your roofing system’s life span. Once such problem is roof blisters. A roof blister is a raised area where the roof loses adhesion. This area can fill up with air or water to form a blister – which looks like a bubble on your roof. If left untreated, a blister can grow exponentially and let moisture into your home. Then, the problem gets worse, needing more serious repairs and possibly even a full-on replacement.