Acrylic adhesives are generally divided into two subgroups: Pure and Modified

Mastic tape is the portion that composes the spongey center between the backing and the adhesive. If you need versatility with your projects, mastic tape is the way to go. You can find mastic that has vinyl backing, rubber backing, or no backing.

Some common applications of butyl rubber tape include using it for window and door installations, sealing gutters, fixing automotive leaks, and even in HVAC systems to create airtight seals. In the construction industry, contractors often use it for flashing around windows and roofs to prevent leaks during construction and in finished structures.