Realistically as long as you can force the grout into the joint use sanded grout.
Floor tile grout.
As a rule of thumb sanded grout should be used in joints larger than 1 8 in.
Grouting may seem scary but it doesn t need to be.
To grout a tile floor start in the farthest corner of the room scoop some grout on the floor with a trowel and use a grout float to spread the grout over a small joint.
Use a grout float to press the grout into the space between tiles.
You should also keep in mind that when tiling over a corner your grout grout joint will open up and when tiling into a recess the top of the grout joint will narrow in.
But on soft stone tiles like polished limestone or marble use only unsanded grout or you ll scratch the surface.
Polyblend non sanded grout is a polymer modified cement based non sanded polyblend non sanded grout is a polymer modified cement based non sanded grout designed for highly glazed or polished tile marble and natural stone that would be scratched by sanded grouts.
Spread the material in sweeping arcs pressing it into the joints to fill them completely.
Some care is required if using sanded grouts on highly polished tiles as the sand can actually scratch the surfaces.
Use this method for both pre mixed and powdered grout.
Demonstration of tile grouting technique using correct technique with tips for best practices.
Sanded grout is normally recommended when the grout seams are 1 8 inch wide or more as the sand provides extra bonding power that prevents cracking.
This durable non shrinking grout accommodates joints up to 1 8 3 mm and can be used for interior or exterior installations.
Work in a small area at a time roughly a 3 x 3 foot section.
Pour a quart to half gallon of grout on the tiles.
If you don t have natural stone tile the easiest way to clean grout is with a solution of 1 part white vinegar and 1 part water.
Then wait 15 30 minutes for the grout to set before wiping off excess grout with water and a grout sponge.
First move the grout float a specially designed smoothing tool that features a flat and mostly firm rubber pad.
Wait for the vinegar solution to stop bubbling and then scrub the grout with a scrub brush or toothbrush.
Also grout size should be considered when there is a difference in the angle of a surface.
Testing the grout on sample tile is a good idea.
Use a hard edged rubber grout float and hold it at a 45 degree angle.