GL EARTH PREMIX GROUT by Custom Building Products is a ready-to-use, pre-mixed grout designed for easy application with no mixing or mess. This sanded, non-shrink, and crack-resistant formula is highly resistant to common household stains, helping it retain its original color for years. Ideal for both new tile grout installation and restoration projects, it is suitable for grouting ceramic, mosaic, quarry, porcelain, stone tile, marble, and granite. Please note that porous stone may be stained by grout, so always follow the surface preparation instructions. Intended for interior use only, this grout is perfect for wet areas such as tub surrounds, shower floors, and shower walls, but should not be used in steam rooms or areas exposed to prolonged water or underwater conditions. The product features MoldGard Technology to help resist mold and mildew growth. Suitable for grout joints from 1/16 in. to 1/2 in., it requires 24 hours of drying time. Clean tools with water before the material dries. Size: Gallon. Color: Beige. Shelf life: 18 months.