-The Shark Vac or Steam is suitable for the following floor types: laminate, bamboo, hardwood, marble, tile, stone. Note that we do not suggest use of this product on unsealed surfaces, such as unfinished hardwood, unglazed ceramic floors, or unsealed stone floors. -It is always recommended to test an isolated area of the surface to be cleaned before proceeding, as well as check the use and care instructions from the surface manufacturer. -Cleaning Tip: When cleaning finished wood surfaces, use broad, continuous cleaning strokes. To prevent surface damage, avoid focusing steam or allowing the cleaning tools to sit in one spot for any amount of time.