The best technique to use is to adopt long strokes that have an upwards and diagonal direction making sure it spreads completely in between the joints of your tiles.
How to apply grout on tile wall.
Use this method for both pre mixed and powdered grout.
Use a hard edged rubber grout float and hold it at a 45 degree angle.
Next apply the grout to the tile working from the bottom of the section upwards and holding the float at an angle of about 45 degrees.
Use the float to make sure that every joint is full of grout.
Mix the grout by pouring the water in first and then add the powder and stir with a margin trowel.
Use whichever side or corner of the float is necessary to fully compress grout into the entire joint.
Work in a small area at a time roughly a 3 x 3 foot section.
To grout wall tiles start by dividing your wall into 3 foot by 3 foot sections so you can work on it before the grout dries.
Wider than 1 8 use sanded.
Apply the grout diagonally across the tile joints to squish the grout into the joints photo 5.
Apply the grout with a rubber grout float filling the joints over a 5 to 10 square foot area.
Then mix your grout until it s smooth and spread it across one section with a trowel.
Run the flat edge of the float across the tiles to remove the excess grout.
When it comes to how to apply tile grout to a wall firstly apply a minimum amount of grout to the front surface of the tiles with a trowel and spread it with a grout spreader.
How did this project turn out.
Begin by scooping up a load of grout onto the grout float using one end of the float.
Pour a quart to half gallon of grout on the tiles.
Additionally spread the grout into the joints and use the side of your float to compress it.
If the joint is less than 1 8 use unsanded.
Do not cover the entire float with grout.
Mix to a smooth like toothpaste consistency let sit for five minutes then mix again.
Keep applying the grout until the mixture in the joint starts to set.
Spread the material in sweeping arcs pressing it into the joints to fill them completely.