Regrouting tile is quite a complex process that usually takes two separate steps minimum, before tile is even selected. First the old grouted tile must be removed and then new grout must be installed. While this procedure can obviously be performed by an individual who does not know anything at all about tile or is not in the business of regrouting tiled floors, it would be a better decision best left in the hands of a professional regrouting company to do so. This company’s extensive training in tile cleaning and tile restoration techniques will allow them to pick the exact color match between your grout and the original grout as well as give you the best texture match.
One thing that you must be very careful with if you are trying to perform the entire regrouting process by yourself is how to restore the cracked areas around the tiles that have been damaged by water or other spills. When you find the cracked part you should check the condition of the new grout to see if it matches the original grout as closely as possible. If they are very close to each other, you may want to just install the new grout on the cracked area and just sand the entire area to match up perfectly with the rest of the tiles. If the cracked tiled area has a good texture to it, you can probably just install the new grout and sand the entire floor until the new grout matches the rest of the tiles.
If you want a very professional job, you may want to contact a regrouting services company to complete the entire job for you. If you choose to go with a service, make sure that you go with a provider that has plenty of experience in this field and will give you a free consultation to assess the job. You will also want to inquire about pricing on regular regrouting services since this can vary depending on what the tiles are made of and the amount of work that will be involved.