restoring white tile grout

[jj4091]

Is there any way of, or a product that will, remove the yellowing from white tile grout? Or is it a case of scratching out & re-doing it? In which case any tips please?

 

[gcol]

If it's bad, a green scotchbrite pad will remove a very small amount of grout and will leave it whiter. Just be careful that it doesn't scratch your tiles - try in a less noticeable place first.
There are products like this http://www.lakeland.co.uk/product.aspx/!8882 but I've never used one with success.
Mrs gcol uses Cif Bathroom spray and a scrubbing brush and that does seem to work on our bathroom tiles.

 

[jj4091]

Thanks I'll get Mrs. JJ on it straight away

 

[wap]

try aquamix grout colourant from trades direct. epoxy based and brilliant permanent results.

 

[amyboo]

I tried at the weekend a suggestion I found on this site for restoring white grout, and it worked fantastically! I mixed bleach and water (70%-30%) and then used a sponge to put it on the tiles and grout. Left it for 10 minutes then scrubbed it off with a toothbrush. It worked really well. We have white grout on the tiled splashbacks in our kitchen, and the ones behind the hob had loads of greasy marks - I can't believe how clean they got with the bleach. And the best thing is that it cost me less than a euro!

 

[sandwell]

I have found that using Flash Gel, is ideal for this job. Brush the gel on to the grout with a toothbrush, and leave for a while, then clean it all off with a wet sponge. The gel does not run from the grout like normal bleach does.