How far up the wall do I need to install the Schluter®-KERDI?

For showers and bathtub surrounds, KERDI must be carried to the height of the showerhead at minimum. KERDI application on the ceiling is optional for showers and bathtub surrounds. For intermittent use steam showers, KERDI must be applied to walls and ceilings. For continuous use steam rooms, KERDI-DS must be applied to walls and ceilings.