P
p4ulo
Its a horrible job.
You can buy a small hand-held grout rake with removable blades....you need to scrape all the old grout out before it get re-grouted.
Other option is to borrow / hire / buy a FEIN multi-tool or similar, for which you can get a proper grout removing tool to remove it / it basically will work like a small angle-grinder (although it oscillates not completely spins) and it cuts out the old grout.
Not a pleasant job....
Next time its grouted, take their time, allow it to harden up a bit in the joint before wiping away with sponge and even longer before buffing residue off the face....
You can buy a small hand-held grout rake with removable blades....you need to scrape all the old grout out before it get re-grouted.
Other option is to borrow / hire / buy a FEIN multi-tool or similar, for which you can get a proper grout removing tool to remove it / it basically will work like a small angle-grinder (although it oscillates not completely spins) and it cuts out the old grout.
Not a pleasant job....
Next time its grouted, take their time, allow it to harden up a bit in the joint before wiping away with sponge and even longer before buffing residue off the face....