Structural glazed wall tile offers design flexibility and long life. Proper detailing and construction is especially critical when working with exterior structural glazed tile, a mixture of shale and fireclay, because of moisture hazards. Because glazed tile has an impermeable exterior surface that can trap water in the wall, weep holes, flashing, and a drainage cavity become even more important than they are in other types of masonry construction. When designing exterior walls with structural glazed tile, include flashing at the base course, coping, and shelf angles and below all wall openings. To further reduce moisture penetration problems, designers should include a ventilation system in head joints at the top of the wall. Flexible anchorage to columns and beams and installation of expansion joints also helps prevent water damage. Mortar selection should be based on ASTM C 270. In most cases, either Type N or Type S mortar will provide suitable strength properties, durability, and workability. Structural glazed tile has a hard ceramic surface that is vulnerable to chipping, so special care must be taken in shipping and handling the product. Walls built of structural tile need extra protection during construction. In all weather, the top of the wall and all glazed surfaces should be covered with polyethylene sheeting or a tarp at the end of the day. During construction, greater care must be taken to keep structural glazed tile clean. Glazed surfaces should be wiped clean after joint tooling or within 30 minutes after laying. Metal scrapers and abrasive powders should not be used. Once the tile wall is finished, it is easy to clean. If simple precautions are followed, structural glazed tile will provide enduring satisfaction.