Help! Grout gone hard before able to wipe it down

[Gazzer]

That is too far gone for a cleaner !

 

[radim]

try sandpaper.

 

[Bradma9]

What size spacer did you use, if you could scraper the grout off the tiles you might be able to get a multi tool to get the grout out the grove and re grout, this might not be an option just a suggestion.

 

[Martyn Leeds]

A grout cleaner isn't gonna get rid of large chunks of solid grout.

A Stanley scraper with a blade in it would be my weapon of choice. Scrape off the chunks, then look to rake out most of the grout with a Stanley knife, and then re-grout with a different grout..

 

[CJ]

By the time you faff about with trying this, that & other remedies, you'd be better off taking them off and re-doing.

 

[stusgsx]

Yep I agree would be easier to start again

 

[Sean SML Tiling]

For what its going to cost you to repair this job it would of cost the same to have a professional in to do the work.

 

[PaulSmith]

Very good chance of the tiles getting damaged. As above, I'd pull them off and start a fresh.

I do use Mapei grout but straight on there with the washboy or sponge 5 mins after.