Outdoor tile areas offer a long-lasting, easily maintained beauty akin to masonry and patterned concrete. But choosing the right tile and installation supplies (and techniques) makes all the difference. First of all, you must use a "frost-proof," outdoor-rated porcelain tile. Most tile companies specify this feature proudly, right on the sample board. The grout choice should always be an epoxy or urethane grout that is suitable for outdoor use. A high quality thinset adhesive is the recommended choice for proper adhesion, in any weather.