A method of assembling a shower door sealing assembly includes inserting a bumper into a channel that extends along an outer perimeter of at least one vertical side of a door frame having two vertical sides and a horizontal side that extends between the vertical sides. The bumper is coupled to the door frame via a friction fit between the channel and the bumper. The method also includes installing the door frame within a showering enclosure in an orientation in which the vertical sides of the door frame are parallel to a wall of the showering enclosure and the at least one horizontal side is parallel to a floor of the showering enclosure.