No. your ceramic will be fine..but a word of caution..if you have never had ceramic before..be SURE all of your rugs have non skid backings..otherwise it's like being on a skating rink! Also..the smallest amount of water can make them very slick..but they dry fast..just something to be aware of...they are a breeze to clean..I love them. I bought a stick type steamer..they are wonderful for ceramic!