How to Repair Missing Grout From Floor Tiles

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You don't have to pay a contractor hundreds of dollars to repair missing grout from floor tiles. Find out how to repair missing grout from floor tiles with help from an experienced construction professional in this free video clip.

Part of the Video Series: Grout Maintenance
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Video Transcript

Hi, this is Nicholas Iarocci, The Home Source Guy, president and owner of Source Development, Inc., a residential and commercial construction in Garnerville, New York and this is how to repair missing grout from floor tiles. After we have used a grout removal tool which comes in one of many forms, we've got one that fits on a Dremel tool, one that fits on a reciprocating saw. We've got manual tools but this oscillating tool rules. So once we're done removing the grout, you want to make sure why the grout was missing to begin with. I mean it's crucial that you find out the reason for it being missing. You know, was there an impact on the tile? Was the tile loose, because if the tile is loose, putting back the grout isn't really going to help. You're going to have to reset the tiles. So it's really helpful to try to do a little homework before you do the tile. But essentially, there's a couple things you need to know before you start mixing grout. This is an unsanded form of grout and it's capable of doing joints up to an eighth of an inch. Anything beyond that you want to use sand. The sand acts as like a bonder. It keeps the tile together, I mean, excuse me the grout together from shrinking and whatnot. You'd use the unsanded grout for examples like this where you know, the grout is less than an eighth of an inch. So let's get started. We're going to mix up some sanded grout for our quarter inch application which is right here. So this particular grout has additive in it. If it doesn't have additive in it they sell liquid additives that you can add. It's very important that you have some sort of additive. I mean it really helps the grout stay bonded. We're going to want to mix our particular grout to a peanut buttery consistency. Now grout is the weakest part of any tile installation, I mean outside of the actual tile being set properly. It's the most porous part and you really want to get the consistency right. If it's too wet, it won't be, it won't have the strength to it. It won't bond as well. So you really want to get the right mix and consistency when you're mixing up the grout. I suggest pouring small amounts of water, I'm going to just reach back and grab some water here and mix with our float until we get the right consistency. And again it's supposed to be almost like a peanut buttery consistency, that's what you want. So we've actually gotten the consistency we want and we're going to go over and start installing it in our tile. So basically we're going to double check the joint, make sure all the loose grout has been removed and then we're going to sweep with our grout brush. So now we're going to install our grout so basically we're going to gather the grout on our float and we're going to push down into the groove and make sure it's all full, no air bubbles, no voids. Now this stuff is going to set pretty quickly with the additive especially and especially if it's a warm day it will set up right away. So, you know, try to do smaller areas if you have larger areas that you have to touch up, but it will set up on you. What we're going to do is we're going to go across the tile on a diagonal. You don't want to use an excessive amount of water because that will weaken the actual grout or it might even discolor it depending on the color you are getting so it's very crucial to use just the right amount of water to remove the grout from the tile or you'll end up with a haze eventually that you'll just either wipe off with a rag or a dry rag even or a very damp rag and that is how to install missing grout from tile. This is Nicholas Iarocci, The Home Source Guy, president and owner of Source Development, Inc., a residential and commercial construction company in Garnerville, New York, helping you build a better life. We'll see you next time.


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