Wait for the vinegar solution to stop bubbling and then scrub the grout with a scrub brush or toothbrush.
How to grout ceramic tile floors.
Spread the material in sweeping arcs pressing it into the joints to fill them completely.
Grouting may seem scary but it doesn t need to be.
Apply it to the stain let it sit overnight and then scrub with a nylon brush.
Don t use a metal brush as it will scratch the tile.
For stubborn grout stains mix a paste of baking soda and water.
Use a hard edged rubber grout float and hold it at a 45 degree angle.
Put the mixture in a spray bottle and spray the grout in between your floor tiles.
Begin by scooping up a load of grout onto the grout float using one end of the float.
Do not cover the entire float with grout.
Once the grout is clean mop the tiles with water to get rid of any leftover vinegar solution.
Demonstration of tile grouting technique using correct technique with tips for best practices.
Then wait 15 30 minutes for the grout to set before wiping off excess grout with water and a grout sponge.
You should wait another 3 hours before going over the tiles once more.
Let the grout air dry then put on a silicone based grout sealer to resist future stains and dirt.
Work in a small area at a time roughly a 3 x 3 foot section.
Use this method for both pre mixed and powdered grout.