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Should I Seal Marble Tile Before Grouting? [Explained]

You just renovated or installed new marble tiles in your bathroom. Now you’re thinking about how to protect it from grout stains. Well, we’ve curated the perfect article for you! Check it out!

Should I seal marble tile before grouting?

The answer is simply a ‘Yes’! You should definitely seal your marble tiles before grouting. This is because these tiles are fairly porous. Thus if you don’t seal them before grouting, they might get stained. Moreover, there’s a chance it might discolor it! These tiles are also prone to water damage.

This is just a hint of what we have packed ahead for you. So what are you waiting for? Let’s get right into it. 

Why Should You Seal Marble Before Grouting?

Marble tiles are natural stones. These tiles tend to be fairly porous. This leads to water damage or discoloration. Moreover, these tiles tend to stain easily from spills or dirt. You might also have a hard time cleaning the stain. At times, it won’t even come off.

Marble tiles are comparative very up there in price. Hence retiling might be very costly for you. This is why you should seal your marble tiles with a sealant before grouting. 

Because whatever color grout you’re using, the edge of the tile might change color to that. Moreover, this sealant will also keep spills, dirt, and debris out of the tile. And will increase its longevity. 

Preferably, these tiles should be sealed before installation. However, if you haven’t done that, don’t worry. Because sealing before grouting will work as well! However, make sure you use grout and not silicone instead. It’s going to start getting dirtier soon and look bad. 

Now, let’s check out how to seal marble tiles!

Steps On How To Seal Marble Tiles Before Grouting 

Now, you need to be careful about this step. Because in case you miss a spot the tile might stain when grouting. Hence be patient and work your way through slowly!

Necessary Tools You’ll Need

Here is the list of tools that are required for the process:

  • Spray Bottle
  • Stone Cleaner or A Light, pH-neutral Cleaner
  • Washcloth
  • Sponge
  • Marble Sealant
  • Dry Cloths
  • Grout

That’s everything you need to go through these steps smoothly. Gather your tools and let’s get started. 

Step 1 of 7: Cleaning The Marble

First, fill a spray bottle halfway with your preferred cleaner. Using a spraying bottle might make this process a little easier. 

Then use a damp washcloth to wipe your tiles. After that, wipe it down once more with a dry cloth. Make sure the tiles are fully dry before you move on to the next step!

Step 2 of 7: Applying First Layer of Sealant

Using a sponge, apply a thick, even layer of marble sealant to the stones. The stone should have a glossy look and feel to it afterwards. 

You should use an impregnating sealant for the process. These will give you the optimum result.

To help you out in choosing one, we’ve suggest a couple here:

Product 1
Product 2

You can use any of this for this process. Allow the sealer to set into the marble for about 15 minutes. But if the tile starts to dry before that, add another layer to maintain the glossiness.

Step 3 of 7: Wait For Sealant To Set

Now after the 15 minutes tile period has passed, it’s time to take it off. Use a dry cloth to clean off the excess sealant. Then allow it to set for an hour or so. 

In the meantime, avoid the area. Don’t walk over it, otherwise you might get dirt, or debris over it. Moreover if you have too many pets, make sure to install a barricade. 

Step 4 of 7: Apply A Second Layer Of The Sealant

You have to reapply the sealant again, once it has set. Repeat the same process of using a sponge to apply sealant. Then, again wait for another 15 minutes. Wipe off the excess after that. 

The second layer will add a safety coat for the first layer. This layering will make the marble sealant work better.  

Step 5 of 7: Let The Sealant Set & Cure

For this time along, allow at least 40 minutes for the sealer to dry. Again, don’t step on the floor while it dries. 

However, before you grout, wait at least 5 days. Also, check the sealant package for the time duration as well. It’s better if you stick with the time limit mentioned there. 

Step 6 of 7: Seal The Grout

After your sealant has fully cured you can get started on your grouting process. Make sure to mix the grout mixture well. After that, you can start grouting the marble tiles

Now you have to wait at least 24 hours before that grout starts to set. It’ll take about 3 days for it to dry completely. 

Step 7 of 7: Apply Another Coat Of Sealant

After 3 or 4 days of applying the grout you need to layer a coat of sealant. This is basically to reseal any spots where the sealant might’ve worn off during the process. Clean any excess grout around the edges before you do this.

After that, repeat the same process of applying the sealant!

These are basically all the steps you need to follow to apply the seal by yourself. To keep your tiles from getting dirty, you can use a carpet as well.


Question: How can you tell if marble is sealed?

Answer: For this, you need to spill some water over the tile. Then wipe the floor with a clean cloth. If the color doesn’t change it’s sealed. Otherwise, it’ll turn into a darker shade which means it’s not sealed. 

Question: How often should you seal marble tile?

Answer: You should seal your marble tile every 6 to 12 months. This will protect your tile from stains and discoloration. Thus will keep your tiles spotless and brand new!

Question: Is marble OK for shower walls?

Answer: Yes, marble is a great tile for shower walls. However, you have to maintain it properly to keep it looking shiny. And apply the sealant as per required!


That’s the end of it. We hope we cleared your burning question: should I seal marble tile before grouting?

Call a professional if you need help! 

Happy sealing!