Step 1 – Mix The Grout
Mix the grout to its proper consistency and put ample amount of grout on the grouting float.
Step 2 – Apply Grout On The Tile
Apply the mixture of grout to the surface of the tile.
Step 3 – Spread The Grout Evenly
Spread the grout on the tile evenly. Make sure that you spread it in a unidirectional manner. Do this procedure until the entire surface and the spaces between the tiles are completely filed with grout.
Step 4 – Remove The Excess Grout From The Tile Surface
Hold the grout float at a 45-angle and drag or scrape it across the surface of the tile.
Step 5 – Clean The Grout Float
Clean the grout float using a squeegee or a wet sponge to prevent the grout from drying completely on the flat metal surface.
Source: www.DoItYourself.com