Cavityrock Black is a semi-rigid faced board that is designed to achieve a more aesthetically pleasing look to open joint rain screen systems where metal panels potentially expose the color of the continuous insulation installed behind them.  Cavityrock Black offers the same thermal performance, fire resistance & moisture control as Rockwool unfaced Cavityrock and is available in a number of thicknesses and sizes. The black facer that comes already installed reduces labor costs of installing a fluid or sheet applied facer on site and withstands long term UV exposure.