Model No: 13081. HENRY 527 TileFlex Plus Flexible Thinset Mortar is a reliable and versatile solution for tile installations. This Portland cement-based thinset mortar is polymer modified, making it suitable for a wide range of tile types including porcelain, quarry, stone, ceramic, and mosaic tiles. It can be applied on most interior and exterior surfaces, providing a strong bond and durable installation. Whether you're working on plywood or cement backer boards, HENRY TileFlex Plus Thinset Mortar is an ideal choice for your tile projects. With its easy-to-use formula, simply add water and no additional additives are required. The mortar offers a 3-hour pot life, giving you ample time for seamless installations. This thinset mortar is recommended for various tile applications, including quarry, ceramic, and mosaic tiles. It is also suitable for natural stone installations that are not moisture-sensitive. However, please note that it is not recommended for exterior walls. For moisture-sensitive materials like marble and other moisture-sensitive tile and stone, alternative products are recommended.