The tile grout should be used after the application of tile bonding, and wait for at least 24 hours. 2. Application Method: Mix the powder with water at the ratio of 25:5.5-6, and then use electrical blender to stir evenly. Keep the mixture for 5 to 10 minutes, and then stir it again to achieve the best result. Finally apply the grout on the surface and fill the gap with the rubber scraper, and generally we fill the gap area one square meter at one time. The dosage of grout must be adequate, to avoid any space in gap. After surface is dry(1-2 hours), we could use wet cloth or mop to clean the surface. The final cleanout should be done after 24 hours. Mixing Ratio (powder: water): 25: (5.5-6) Application Tool: electrical blender, rubber scraper, horizontal ruler etc.