What is the typical Interior finish on an ICF?

All building codes in the USA and Canada specify that plastic insulation (EPS) must be covered by a thermal barrier equivalent to 15 minutes of fire protection in habitable spaces. This is achieved with ½" gypsum board or an equivalent material. Fox Blocks has specific fire testing that proves regular ½" gypsum board with regular drywall screws fastened into the plastic webs remains on the wall for the required 15-minute time period.