Making dark grout lighter

[ScottieF]

I foolishly asked tilers to do the grout in our new kitchen with the same dark grey they'd used with dark grey porcelain tiles in our hall. The kitchen tiles are a very light grey. They would have used white. I wish I'd asked them to mix white and the dark grey cos the finished grout is far too dominant - it's the first thing you see when you look at the tiling! Websites seem to suggest you can't lighten dark grout, only darken light grout. Have any of you guys done this successfully and if so, how? Thanks.

 

[Richard C]

What about this:
http://www.tiledoctor.co.uk/GroutColourant.html
Not used it personally though.

Are we talking floor or wall tiles here? If floor, you definitely don’t want white or anything light in colour especially in a kitchen, it will start to look stained & dingy in a very short time. Best option may be to rake out & re-grout but it’s rather time consuming.

 

[ScottieF]

The far too dark newly-grouted (pale grey) tiles are on the kitchen walls above the worktops. The dark grouting used with the darker grey floor tiles were on the floor in the hall and look great.
I'll have a look at the link - thanks. Don't fancy digging out all the grouting and re-doing it - had hoped there was something like a grout pen that you could just put on top.

 

[ScottieF]

Just wanted to thank RichardC again for giving me the link to Tile Doctor. I've used their 'Antique White' grout colourant and it's covered the dark grey grouting beautifully, with only one coat needed. Result! Thoroughly recommend Tile Doctor's products but you'll have to be quick if you want to re-colour grouting as they told me they are running out of Aquamix products (from the USA) and there'll be an unknown period of time before any British product fills the gap in the market.