RainSaucers™ often come to you rolled up in a tube to enable them to be shipped efficiently. Since they are made from flexible plastic, they take on the curled shape, but only temporarily. If you try to install them in the curled shape they will look more like a Sombrero than a Saucer. So we highly recommend you remove the curl by laying the disc flat for at least 24 hours or until all of the curl is removed. If you don't have 24 hours, just lay the disc flat in direct sunlight. The sun and heat will accelerate the process.