Press the mixture down into the gap you re repairing until it s completely filled.
Repair cracked floor grout.
Use a grout float to fill the gap with the grout mixture.
Remove the old grout remove all the loose and cracked grout with a grout saw or dremel tool and completely vacuum out the gaps.
In this video i will show you how to repair grout diy on this 15 yr old grout.
Repairing wide cracks in grout if you have wider cracks in the grout or missing grout then it s time to consider removing the old grout and installing new grout between the tiles.
While grout may crack from wear and tear an uneven or weak subfloor may be causing the problem.
This will loosen any cracked and damaged grout.
2 remove damaged grout and debris with a grout saw.
In order to repair damaged grout that s cracking using new grout follow these steps.
Repairing cracked grout even properly installed tile floors and walls can be susceptible to cracking grout over time.
The ability and cost to repair cracked grout is directly tied to how bad the situation has become.
One of the easiest ways to try and repair cracked grout is to simply use grout caulk.
Be extra careful with this step as you can scratch or chip.
Use a bamboo skewer and drag it along the grout line.
You can use a simple grout removal kit or i prefer using a dremel 568 grout removal kit which attaches to my dremel tool or the rockwell sonicrafter.
A grout float is a thick rubber pad with a handle on it that s available at most home improvement stores.
Scoop some of the grout mixture out of the bucket using the padded part of the grout float.
You can simply squeeze the tube in a caulk gun and apply it to any cracks that you may have.
1 clean the area where the grout is broken with a 1 to 1 vinegar and water mixture.
This is a substance that matches the color of grout exactly and comes in a normal caulking tube.
Grout cracking is something you should take steps to deal with as soon as possible.