When installing a shower curtain rod, it is important to place it at the proper height. The ideal placement for a shower curtain rod is approximately seventy-five inches from the bottom of the tub or floor. This allows enough space between the top of the tub and the bottom of the curtain rod so that water can drain out without pooling around your feet. Additionally, when selecting a location for your shower curtain rod, be sure to measure twice before drilling any holes into walls or tile as to avoid any structural damage.