Looking at the tiles behind the kitchen sink I could see the grout was discoloured....was white originally. I dreaded the thought of so called "Grout Whitener" or cleaning with bleach and considered chopping off the tiles and replacing them. Then I remembered I had a Dremel and a "grout removal tool" which is actually like a dentists drill with serated edges.
Trick...I decided...was patience and not to rush. So I carefully ran along each grout line and used a Stanley window scraper to clean out the bits left on the edges and it all looked good. Test would be when I regrouted...which I did with Unibond grout....boy it looks as good as new.
Moral here is not to be depressed by the thought of grubby grout...accept the inevitable and do the job properly and remove the old stuff....set your mind to patience and take your time. Its worth it.
Trick...I decided...was patience and not to rush. So I carefully ran along each grout line and used a Stanley window scraper to clean out the bits left on the edges and it all looked good. Test would be when I regrouted...which I did with Unibond grout....boy it looks as good as new.
Moral here is not to be depressed by the thought of grubby grout...accept the inevitable and do the job properly and remove the old stuff....set your mind to patience and take your time. Its worth it.