E-Z Tape has been in business for over 20 years. Flame Fighter drywall tape is the only drywall tape that is approved for 1 and 2 hour firewalls without the use of mud. It has listing for floor/ceilings, walls, and roof/ceiling assemblies. E-Z Tape Flame Fighter drywall tape is now approved for glass mat sheathing (DensGlass). E-Z Tape Flame Fighter drywall tape will save you on labor costs and time on your next project.