new grout

[Dr Vapeur]

How long do you have to wait before applying GP to new grout. I have some grout to replace before colour sealing it.
Richard Gagne

 

[Dr Vapeur]

I wrote GP. Since I am probably not the only one who will need to make small repairs, I give Steve's answer: "Wait 24-48 hours. It is great to apply to newly installed grout. It actually cures in the grout and makes the grout harder."
Thanks Richard Gagne