https://www.diydoctor.org.uk/projects/cleangrout.htm

A DIY solution on how to clean and remove hard grout from floor, wall, or quarry tiles. When you have left grout too long and it's hardened, we show you how to ...

https://homeguides.sfgate.com/clean-grout-dries-completely-27757.html

Dec 6, 2018 ... Once it has cured, however, old grout can be difficult to clean from tiled ... This allows the solution time to loosen the grout's bond to the tile.

https://www.youtube.com/watch?v=Yl62qH-BYsU

Sep 22, 2015 ... I learned the hard way - what works, what doesn't. Good luck with your project!

https://www.askthebuilder.com/excess-grout-removal/

Removing excess grout from your tile floor is a challenging but not impossible project. You need a few simple items to ensure no damage to your ceramic tile.

https://www.youtube.com/watch?v=Zqz0MF5DJjc

Jul 25, 2013 ... I was applying grout to ceramic subway tile, and ended up having to leave the job before I could sponge clean the excess grout. I've tried ...

https://www.askthebuilder.com/remove-grout-from-ceramic-tile/

Not a month goes by that someone doesn't email me and ask how to remove excess grout from a wall or floor tile job. People have sent me photos that make me ...

https://www.wikihow.com/Clean-Grout-Off-Tile

How to Clean Grout Off Tile. Laying tile can lead to an unsightly grout haze or even hardened grout that needs to be cleaned off your tile. Also, the grout in your  ...

http://community.homedepot.com/howto/DiscussionDetail/DRIED-GROUT-ON-SLATE-TILE-NOT-JUST-HAZE-LOTS-OF-GROUT-HELP-90650000000060L

Mar 3, 2012 ... Don't get me wrong....grout haze remover works great for most grout removal applications, but using sulfamic acid gets rid of everything.

https://www.bobvila.com/articles/how-to-remove-grout-haze/

When the excess has not been properly cleared from the tile surface, what little that ... Commercial grout remover (determined by tile material and grout type)

https://www.thespruce.com/grout-haze-cleaning-1822612

Oct 30, 2018 ... Grout haze is a semi-white film left on the surface of tile after grouting. ... Wait until the grout has hardened before you begin trying to remove the ...