A: Thank you. According to the instructions on the box, the suction cups adhere best on a clean, flat, non-textured surface. Any other type of application such as textured walls, very porous walls, or a grout line, could cause the suction cups not to adhere properly and eventually slide off.
A: Thank you. As long as you have a clean, smooth surface, this will adhere to a fiberglass shower unit.
A: Works well on wall tile for me . Must be smooth . Will come undone at times ,just needs cleaned and redone