Find a picture of your favorite pool and you are almost guaranteed to find a beautifully tiled swimming pool. There is a reason for that. Tile has been, since the time of the Roman Empire, the best building choice for the combination of strength and beauty. You can see tile still standing today that was laid in the 16th century. Modern tile is, of course light years better then tile of antiquity. This is why we use tile for all surfaces of our overflow system.