Make sure the area is clean and that all dirt, dust, rust and grease is removed. Cut off the top of the cartridge, screw on the nozzle and cut the nozzle to the required size. Apply in a zig-zag pattern to the substrate using a cartridge gun. Then apply the ceramic fibre material onto the substrate. The Vitcas CFA will set at room temperature but this process is accelerated by the action of heat.