What is the best way to remove grout and regrout tile?


Tom Dredge demonstrates how to remove grout and regrout your tile to make your bathroom or kitchen tile look like new.


Today we’re going to talk about the removal of old, tired grout. But before we do that, let’s talk about what it is that we’re getting ourselves into.We’ve got individual tiles placed on a water-resistant backer board with adhesive, but placed in such a way that there’s spaces in between them. That space can vary anywhere from a sixteenth of an inch to a quarter of an inch. As we see here, this is about a quarter of an inch spacing right here. When those tiles dry, those spaces in between need to be filled with a substance. The substance we’re dealing with today is grout. Which is what we’re going to remove today, and put in new.In order to do that, two things we need depending on the size of the job. We have a hand tool with an abrasive blade, that on small areas, work in such a way that scrape away the grouting that’s there. For larger jobs, an electrical tool. Same type of bit as we do on the hand tool. And this will remove the grouting a lot faster. We turn this tool on, put it on an angel into the grout lines. The tool does all the work itself. It’s up to you to keep it steady and to run it back and forth being careful not to chip the tile. One thing to remember, though. If we’re going to get into a big job, and we need to use this, safety glasses, always.So let’s remove some grout. We’re going to take our saw and we’re going to put it in between the tiles and we’re going to scrape away the grout. Once all of our grout is removed, brush it out. Get all of the grout out. We want all of the bad grout out. We do not want to adhere new grout onto old grout. Now that we have all of our lines wide open, let’s discuss the grout.We have a couple of different options. Number one, we’ve got premix. All ready to go, out of the bucket, into the lines. Secondly, we’ve got powder. For the powder mix, we need to mix it with water. A mixture of about three to one will do, although you may need to add water, or add powder in order to get the consistency that you like. And we have a couple of different styles. We have sanded, and we have unsanded. Unsanded grout is for narrower grout lines only. Sanded grout is for the wider. Because it has sand in it, a little more binder, a little more hold. Once we’ve missed all of our grout together, we’re going to take our grout float, and we’re going to put some of that grout on top of this and on a vertical wall like we have here, you put the grout on top of the float and run it right over the tiles. And we want to continue to run that grout right over the tiles a couple of times. Maybe two, maybe three, maybe even four. What you’re going to find is that all of that grout that was on there and run down the surface of the tile is going to work its way into all these grout lines. It is very very important for you to make sure you fill those grout lines all the way. Run it continuously everywhere that you need to until you are done.Next thing, take your sponge. Bucket of cold water, rinse it, wipe the excess grout off of the tile, being careful not to remove any of the new grout that you have put in there. You’re going to end up doing that a couple of times. If it takes three, if it takes four, do it as many times as it takes. Make sure you start with a bucket of clean water. When you get all done, you are going to find that there is a very light haze on this. A couple hours after it dries, take that same sponge, wipe it off. Grout will take anywhere from 24 to 48 hours to dry before you can use it, before you can put a silicon seal on it. So allow it to do that. Now you have just replaced, replenished a brand new grout wall on your old tile.


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