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Complete Guide on How to Install Ceramic Floor Tiles

Whether you’ve been installing ceramic floor tiles for years or this is your first tile installation, you can’t deny that this material can add a certain charm to any room, from the kitchen to the bathroom to the living room. Ceramic tiles are attractive, durable, and require little maintenance. In fact, you can visit a three hundred year old church or castle and find ancient tiles that are still in good condition. Wouldn’t it be wonderful if you could install floor tiles that would last for generations to come?

install ceramic floor tiles

The thing is that, as durable and versatile as this material can be, installing ceramic tiles is a complex job that requires special care and preparation. You can’t tackle this project without a clear plan, prep work, and a lot of patience. Rush through it, and the tiles won’t survive the sudden spills and constant wear and tear. Learn how to install them properly so that you can take advantage of their strength and durability.

With that in mind, here’s a comprehensive guide that will teach you how to install ceramic floor tiles that will last for years to come.

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Step 1: Assess and Prep the Floor

install ceramic floor tiles

First, carefully inspect the surface upon which you plan to install the floor tile. Keep in mind that as strong and durable as ceramic tiles may be, they will crack if the subfloor is uneven or thin. As a rule of thumb, make sure that the subfloor is no less than 1 1/8 inches thick. Otherwise, it may flex, causing the grout to fail and the tiles to break. If you’re not sure whether the base is sturdy enough, just jump on it. Yes, it may sound silly, but it’s an excellent way to determine if there’s any flex or movement.

A concrete slab is an ideal base for a floor installation project, but wood can work as well, as long as it’s firm.

After assessing the sturdiness of the subfloor, you need to ensure that the surface is smooth and flat. Trying to install floor tile against a protrusion will result in a sloppy-looking project that won’t stand the test of time.

Step 2: Measure

install ceramic floor tiles

Before you can begin the actual installation process, you need to figure out how much ceramic tile you will need and how you should place it. You want the final result to look smooth and symmetrical, so you need to find the center of the surface on which you will be installing the tiles. Once you’ve identified the starting point, measure the surface from the sides.

Pay special attention if the floor isn’t square because identifying the baseline won’t be as obvious. Try to find the most distinct wall and use it as the starting point. That way, the lines will be parallel to that wall, making your work look even and symmetrical.

The next step you will need to take is to estimate the amount of ceramic tile you will need. You can do that by using a simple math equation: calculate the square footage of the room and add five percent for waste.

Here’s an example: if the room is 10 ft. X 12 ft., then the total area of the surface is 120 ft. Add six square ft. (five percent) for eventual breakage and other waste. Therefore, you will need to purchase enough ceramic tile to cover 126 square ft

Step 3: Determine the Layout

install ceramic floor tiles

The prep work is over yet. Although you may be eager to start laying the ceramic floor tiles and see your vision come to life, you first need to ensure that the layout will be even. So, before you begin setting the tiles in place with mortar, dry-fit them over the surface to determine whether the layout is even or if you need to make any adjustments.

Make sure that the space between the tiles is uniform. Resist the urge to push the tiles closer together to reduce the width of the grout lines. Especially if you have large ceramic tiles, the space between them should be large as well. Otherwise, the grout won’t bond properly, and it will break down prematurely, thus leading to potential leaks and water damage.

Now that you’ve determined the layout, use a pencil to mark the outer edge of the tiles so that you know where to position the furring strip. This step will provide an accurate overview for when you will set the tiles in place with mortar.

Step 4: Cut the Tiles

install ceramic floor tiles

A dry layout enables you to see how the final result will look and if there are any adjustments that you need to make. For instance, you may notice that you need to cut some of the tiles to make them fit the surface properly. You can choose to cut the tiles before you set them or to install the full-size plates first, allow them to dry, and then add the cut ones.

Because cutting ceramic floor tiles is a complex and delicate job, you must ensure that you have the right tools in your arsenal. A tile cutter from RUBI specifically designed for ceramic tiles will ensure that your cuts are clean and accurate. If you decide to cut the tiles as you go, then you will need professional tile saws, like these here. These portable tile saws are excellent for projects that require you to make cuts directly at the place of installation. Needless to say, precision is of the utmost importance, so you will need tools that offer the highest accuracy and quality.

Step 5: Spread Thin-Set Mortar

install ceramic floor tiles

The prepping part is finally over. Now begins the part where you can install the tiles and turn your vision (or your client’s vision) into reality.

Consider the room where you will be installing the ceramic floor tiles. If we’re talking about a kitchen, bathroom or hallway (rooms that are prone to moisture) then make sure to use a waterproof adhesive.

Check the label to determine how long it will take for the adhesive to dry. Communicate the drying time to your clients as well and let them know that they should avoid walking on the tiles during this period. Otherwise, they might damage the bond between the tiles, causing them to loosen and the grout joints to crack.

Mix the thin-set with the adhesive until you get a mayonnaise-like consistency. Let it sit for about ten minutes before you spread it on the surface floor.

Use a trowel to spread a thin layer of thin-set. Hold it at a 45-degree angle to spread the mortar evenly and ensure that there are no bulges or gaps.

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Step 6: Set the Ceramic Floor Tiles

install ceramic floor tiles

Lay the tile gently over the thin-set. Push the tile down with your fingertips to set it in place firmly. Twist your wrist slightly as you do so to spread the adhesive over the surface of the tile.

Begin from the center of the room and move towards the walls. Apply constant finger pressure as you go to avoid lippage.

We recommended that you use Rubi Tile Level Quick. This leveling system is ideal for installing large format ceramic tiles (minimum size required: 12”x12” and thickness levels between 1/8” and 5/8”) using the double gluing technique.

The nippers allow pressure to be adjusted according to the thickness of the ceramic tile, letting the user to always exert the exact pressure necessary at all times. This facilitates the use of the system for people who are not accustomed to it.

Thanks to the TILE LEVEL QUICK, work time is reduced and the profitability of installation work improves for both floor and wall tiles.

install ceramic floor tiles

Step 7: Finishing Touches

install ceramic floor tiles

Once the adhesive is dry, you can begin preparing and applying the grout. Mix it until you obtain a smooth yet firm paste. Spread the grout evenly and use a blunt stick to force it between the joints of the tile. 

Use a big sponge and water to remove the excess and give the floor tile an even look. Keep in mind that this part is painstaking work and you will need to wash the surface several times to obtain the result you want.

After the grout has dried, use a dry cloth to buff the tiles. Use vinegar to remove any dirt or residue. Last but not least, apply a grout sealer to ensure that everything will be kept in place.


After several days of hard work, your job is complete! It may have been a difficult process, but the result is well worth it. Not only that, but because you’ve followed all the right steps, were patient, and didn’t skip any of the prep work, you can be confident that your ceramic floor tiles will last for years to come.

Give yourself a pat on the back! You deserve it. Just like the mosaics in ancient architecture, your floor tile is a work of art and it will probably last just as long!

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