They are elements with droplets protruding, which are generally used on the upper parts of the wall or roof parapet, inclined to one side or from the middle to both sides in order to prevent water and snow from accumulating on it. They are especially used in building parapets. With the necessity of thermal insulation in buildings and the increasing prevalence of sheathing and facade cladding applications, parapets have been covered with a thermal insulation material.