PROMASPRAY®-C450 is a spray applied, single package factory controlled premix, based on vermiculite and Portland cement, for internal use. It produces a monolithic coating able to withstand the thermal shocks experienced in a high intensity cellulosic fire. Concrete structures in particular, will be protected from explosive spalling when coated with PROMASPRAY®-C450.


  • Non combustible (A1)
  • Fire resistance up to 360 minutes (depending on configuration)
  • Easy and fast to apply: does not require any primer
  • Good mechanical properties
  • Suitable for internal and external application
  • Resist to humid conditions


Steel, concrete loadbearing structures