Ensure that the surface to which you attach the mirror is completely smooth and flat. If you don’t do this, the mirror can deform, creating a distorting mirror effect. We recommend fixing the mirror with our special glue or spacers for the best result, but screwing or clamping in a rebate is also possible. Remember that outdoors, the mirror may corrode if the edges are not properly sealed, so frame it with a (wooden) frame or provide a shelter.