Custom Building Products Haystack Simplegrout Tile Grout, 1 qt. is a ready-to-use grout that a convenient, no-mixing solution as an to traditional sanded grout. Its non-shrink and crack-resistant formula is designed to resist most common household stains, helping it retain its color for years. This grout is for both new tile grout installations and the restoration of existing grout lines. It works well with a variety of tile types including ceramic, mosaic, quarry, porcelain, stone tile, marble, and granite. For porous stones, it is important to follow the surface preparation instructions to avoid staining. Intended for interior use only, it is suitable for wet areas such as tub surrounds, shower floors, and shower walls, but should not be used in steam rooms or areas with prolonged water exposure. The grout is protected with MoldGard Technology, which helps resist mold and mildew growth. It can be applied in grout joints ranging from 1/16" to 1/2" and requires 24 hours drying time. Tools can be cleaned easily with water before the grout dries. Model Number: PMG380QT