About 2 years ago I laid ceramic floor tiles in the kitchen and hallway.
SWMBO, of course, chose the colour (beige) and against my advice, chose
a light beige grout.
As I expected, some of the grout in the kitchen has become quite stained
due to spillages etc. and now looks quite dirty.
Is there any way I can clean or treat the grout to get rid of the
staining and return it to its original colour?
In Turkey (yes In know this isnt Turkey but nobody else has answered)
they use an acid product to clean the tiles and grout, you wipe it on
neat and you can see the vapour rising you only leave about 5 minutes
and rinse it off as it will quickly destroy the grout, but hey it
certainly cleans it. Its readily available over there but I suspect
health & safety wouldnt let it get anywhere near the shops here.
Apart from that the only thing I can think of is using a grout scraping
tool and scrape the surface, but this is labour intensive.
You could try bleach painted on with a narrow paintbrush.
I can't see the point of using acid. The discolouration isn't due to
hard water salts, so a detergent would seem to be sufficient. If dirt
has penetrated the grout, a mild alkali such as washing soda might be
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