Tiling Grout

[mintymow]

The grouting in my bathroom tiles is looking grey. Is the only alternative to scrape out the old and re-grout. I've heard there are some products on the market that re-whiten, but am not sure if they do the job. Has anyone used anything like this and what was it like?

[johnny37]

I would think the grouting need to be cleaned first but I have found a 50/50 dilution of water/bleach in a spray works well.

[The Builder]

I can't say I've ever been too impressed by the results you get with grout pens etc, Minty.
Several simple removal tools are available. You could even rent an electric one...........

http://www.hss.com/?p=07446

[mintymow]

Thanks for your answers. Looks like some elbow work needed. :(

[tezestwing]

Def need some elbow with this tool but it will remove enough for (water proof) regrout over top http://www.screwfix.c...ut-rake-cutter/17903# spare blades also available HTH Tez

[mintymow]

Thanks for the link tezestwing I might decide to try one of those. As you say I don't need to remove all the grout, just enought for a new layer.