How to grout floor tiles? Do it yourself! 

See how to make floor tile joints yourself.
Remember to choose the right type of grout for your application and always follow the grout manufacturer's instructions!
Think carefully about the color of the grout, so that after grouting the effect is as expected. It is good that the color of the grout and tiles be similar.
Remember to impregnate polished stoneware tiles and other tiles that require grouting. It is worth conducting the test in an invisible place or on a separate tile, whether the mortar, i.e. the grout will not leave stains or discoloration after grouting!
For bathrooms it is worth choosing flexible joints, waterproof and resistant to the formation of mold, etc.
Tools and materials:
Grout - loose mortar or ready mass
Rubber grout - for spreading grout or special trowel
Wallpaper knife - for removing glue residue that crevices
Screwdriver or spatula stirrer for manual mixing
Clean container for grout
Vacuum cleaner - for vacuuming tiles and gaps between tiles
Sponge to moisten the joints before grouting
A glass or measuring cup for liquids (1 glass of water = approx. 1 kg of grout)
Pure cool water
Sponge trowel and container with water - for leveling joints after grouting and cleaning tiles from excess grout
Dry clean cotton rag or towel for final cleaning of tiles and joints.
My instruction:
1. Use a wallpaper knife to remove tile adhesive residues and other dirt, flakes
2. Thoroughly vacuum crevices and flakes of dirt and dust
3. Wash the tiles and gently moisten the gaps between the tiles
4. Prepare the joint in a clean container. Follow orders on grout packaging. 1 cup of cool and clean water = approx. 1 kilo grout.
Use a screwdriver and agitator, or mix the joint manually to obtain a homogeneous mass.
After 1 mixing, wait 3-5 minutes (maturing time) and mix the grout thoroughly again - IT'S VERY IMPORTANT
5. Firmly and accurately push the joint into the joints at an angle of 45 ° and then 90 ° to fill the entire joints and leave a small joint allowance to be able to level later, at a later stage.
6. After 10 minutes with a damp sponge and clean cool water, perform the first washing of tiles and joints by pressing the sponge very gently.
7. After 20-30 minutes with a damp sponge and clean cool water, perform a second washing of tiles and joints, pressing the sponge harder, finally leveling the shape of the joint.
You can supplement cavities in the grout with fresh grout and shape it gently if necessary.
8. After about 20-30 minutes, you can clean the tiles and joints with a dry, clean cotton rag.
Ready ;).
ATTENTION: Always follow the manufacturer's recommendations! Observe the proportion of water and grout, as well as the times stated on the packaging, as well as other recommendations to make the grout durable and resistant.
I hope you find my guide useful.
Grouting is easy if you carry out the work as planned and have all the necessary tools, as well as clean the workplace. It is important not to speed up the process at any stage, because the effect may not be what it was meant to be.
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