You could try vinegar and a scrubbing pad, but there are commercial preparations available at home centers for this specific purpose.
To re-grout you mosaic tables, simply use tile grout. Be sure to remove the excess grout from the mosaic tiles to preserve the tables beautiful look.
if your grout line is less than 1/4" you use smooth grout, above that you use sanded grout.
You will need a grout saw and grout scraper to remove the old grout. Then use an epoxy grout meant for swimming pool use, and work in small areas at a time. Choose a color that matches the tiles. Follow the mixing instructions on the container. When all the tiles are properly filled wait for it to dry before finishing the job with a sealant.
"Grout is the stuff you apply between tiles to seal them in place. Grout tiles once the adhesive has dried fully (24 to 36 hours later). The best grout is waterproof and mould-resistant; some come ready-mixed. Use a grout float - a rubber-faced tool with foam backing - for large areas. Spread the grout across the tiles at right angles to the joins. Use a damp sponge to remove excess. Once the grout is dry, polish the surface with a dry cotton rag." I was taught by a contractor to apply and clean the grout diagonally.
Not JUST a grout no. You can get a cement that will also work as a grout but a pure grout would not have the adhesion required to stick the tiles to the wall properly, you should not use it as a cement.
Grout.
I have a lot of mould around my bathroom tiles and don't seem to be able to get it out from the grout in between. What grout cleaner will work best for this?
You can. It is less gritty but it works. Edit - While this is true, it's important to understand the wall grout is designed for thinner grout lines, so if you use it on the floor, make sure your grout lines are thin. Otherwise, the grout will crack.
Yes. You can remove grout around tiles by using a mechanical device that scrapes it away. The tool tip is usually made of tungsten carbide and has several teeth to gouge away the grout. You can either use a fairly cheap unpowered one or a more expensive one that uses power. You can also buy liquid grout remover for removal of grout residue.
Grout should usually be white or contrast with the tiles, but it truly depends on your preferences.
NO. Because they are vinyl, they will expand and contract at a different rate than grout, which is essentially concrete. You are supposed to lay vinyl tiles tightly together, with no gaps in between.
Tiles used on floors tend to be thicker than wall tiles. Also, floor tiles are subjected to flexing as people walk over them. Therefore, if floor tiling a wooden floor, use a flexible cement adhesive and grout designed to give and take without cracking.