There are a few probable causes but before you tear up the tile and start over try this quick cracked grout fix.
Replacing grout in kitchen floor.
Grout is available as sanded or unsanded.
Remove and replace grout even the best tiling jobs show their age eventually.
If the width is 1 8 of an inch or smaller use an unsanded grout.
Choose the correct type of grout based on the width of your tile joints and where the repair is being done.
See professionally prepared estimates for grout replacement work.
Use a grout saw that has a blade with a width that will fit between the tiles you re working on.
Is the grout between your floor tiles cracking or worse crumbling away.
Grout is strong and durable but it is a porous material.
1 measure the width of the grout lines on your tile floor.
Remove all the loose and cracked grout with a grout saw or dremel tool and completely vacuum out the gaps.
When that day comes remove the grout and replace it to rejuvenate the installation and make the surface gleam.
Get fair costs for your specific project requirements.
How to grout interior brick veneer follow these steps to complete the installation of interior brick veneer by applying mortar to the brick joints.
If you need to repair grout numerous times on any one floor ask an engineer to look into the underlying cause of the problem.
A grout saw is a small handheld blade that fits between the gaps in tile.
But the more effective way is to use entirely new tinted grout.
See typical tasks and time to replace grout along with per unit costs and material requirements.
Measure the space between the tiles.
One way to change grout color is to colorize existing grout.
Use a grout saw to remove the top 1 8 inch 0 32 cm of damaged grout.
The cost to replace grout starts at 11 38 25 04 per square foot but can vary significantly with site conditions and options.
The old grout might be moldy and beyond cleanable.
How to remove old stained grout between floor tiles replace it with new grout.
The existing grout color is no longer pleasing to you and you wish to change it.
In many cases it is faster and easier to remove the grout than to clean it.