They can be used virtually on any type of surface. Tiles are very comfortable to walk on and relatively smooth which makes it safe to use. Hence, there will be little fear of people tripping on any part of it. In addition, patio furniture will sit squarely on the tiles surface, that may not happen if you use another type of patio materials.
Although you will most likely pay more for colored or stamped concrete compared to plain concrete, the amazing transformation will be well worth the investment. A good and creative contractor can render endless array of decorative effects, from rustic earth-toned sidewalks and patios that harmonize with the surrounding landscape or garden to vibrant multicolored concrete floors that double as works of art.
Consider the long term practically and maintenance of patio materials carefully....Most people only think about materials in terms of the cost but that should not be your only consideration. You don't always require the cheapest patio material. On the contrary, you also need to think about what patio materials are going to last for a long time and what kind of maintenance each type of material needs.
Stamped or Colored Concrete : This material is gaining popularity and very practical. It often can be molded or stamped to look just like other types of patio material such as brick, cut stone, irregular stone, cobblestone, etc. It comes in various textures and colors and is cheap. Stamped or colored concrete is a very practical solution when working on a budget.