There are essentially only three things that can be done to remove the hardened grout from your wall or floor tiles.
Clean dried grout from ceramic tile.
Work at the grout with light to medium.
Additional ways to remove dried grout from porcelain using wire wool.
Grab another sponge and wipe it over the treated tiles.
Keep the dried grout wet while scraping.
For bigger jobs pour a 1 2 cup of baking soda into a squeeze bottle and mix it with a 1 4 cup of hydrogen peroxide and a drop of dish liquid.
Scrape scratch and rub the grout off the tiles dissolve the grout without affecting the tile replace the tile s if you can t get the hardened grout off.
Cleaning grout off tile with vinegar or another acid based cleaner can wipe up little granules and dust without a lot of effort.
The methods ahead outline how to remove grout haze using.
Cleaning grout off tile with vinegar is safe and efficient for ceramic and porcelain tile installations and grout but acid cleaners should never be used on porous or stone tiles which includes vinegar and rubbing alcohol.
How to remove dried grout residue on ceramic tiles step 1.
Removing grout from vertical surfaces.
Water and cheesecloth a rubber grout float diluted vinegar on porcelain or ceramic tile only and a nylon scrub pad and a commercial grout haze remover.
When a wood block or stick and a nylon scouring pad don t seem like enough to remove the dried on.
Saturate the grout residue spots with the water.
Scrub the tile surface and the grout with a soapy sponge making sure to remove any of the thin set that is not entirely hardened.
This will act as a lubricant and will prevent scratches on the tiled.
Water and wood method pour some clean water over the tile surface.
Take one gallon of warm water and dissolve a cup of sugar into it.
Keep the tile wet with the sugar water for at least two hours.
Scrape as much of the dried grout from the tile with a wooden stick.
If grout is adhered to a baseboard or vertically applied tile use a wet sponge.
Use a bucket of water and add mild detergent.
If you have wall tile with too much grout then soak paper towels in the solution and place them on the tile.
Wipe the tiles down with a dry rag.
Use a chisel to scrape away the dried thin set carefully chipping it loose from the tile without scratching it or harming the tile itself.
Clean them as you normally would.
Sweep up the largest.
Fill an empty spray bottle with hot water.