This Mosaic Stone Cement is ideal for use with outdoor projects such as mosaic stepping stones, tables, benches, and more. The super strong, crack-resistant formula stands up to the harshest weather. With a high pigment load, it dries to a smooth, porcelain white finish. - Mosaic Stone Cement - 20 lb, OutdoorMosaic Stone Cement, 20LB BX OUTDOOR - The super strong formula stands up to the harshest of weather. Mosaic Stone Outdoor Cement with crack reduction results in a smooth, porcelain white finish for long-lasting projects. This improved formula has superb pigmenting quality and requires no sealant! New formula requires longer drying times.