Glazed tiles are covered with a layer of liquid glass before the baking process, but unglazed tiles have no additional coating and are prepared after baking. Glazed tiles have a glossy and slippery surface, so they are mostly used in residential buildings and they are very easy to clean, but glazed tiles have a non-slip surface due to their anti-slip surface, therefore, they are used in open spaces, commercial areas as well as wet areas.