How to Install Granite Floor Tile with No Grout Lines

Installing granite floor tiles without grout lines is a popular trend among homeowners and DIY enthusiasts. It creates a seamless and modern look that can elevate the aesthetic of any room.

However, it is important to note that this type of installation requires precision and attention to detail.

Before we dive into the installation process, it is important to understand the benefits and drawbacks of this method.

One of the main advantages is the aesthetic appeal. Without grout lines, the tiles appear to blend together, creating a smooth and continuous surface.

Additionally, this method eliminates the need for grout maintenance, which can save time and money in the long run.

On the other hand, installing tiles without grout lines can be more difficult and time-consuming. It requires a high level of precision and accuracy to ensure that the tiles are evenly spaced and level.

Furthermore, without grout, there is no buffer between the tiles, which can lead to cracking or shifting over time.

Understanding Granite Tiles

As a professional tile installer, I know that granite is an excellent choice for flooring due to its durability, resistance to scratches, and easy maintenance.

Granite tiles are made from natural stone, which means each tile has its unique pattern and color variation. This makes granite tiles a popular choice for those who want a natural and elegant look in their homes.

When installing granite tiles, it is essential to understand that they come in different sizes, thicknesses, and finishes.

The most common sizes are 12×12, 18×18, and 24×24 inches. The thickness of the tile can vary from 3/8 to 1/2 inch, depending on the intended use.

For example, thicker tiles are better for high-traffic areas, while thinner tiles are suitable for walls.

Granite tiles also come in different finishes, such as polished, honed, and flamed.

Polished tiles have a shiny, reflective surface, while honed tiles have a matte finish. Flamed tiles have a rough, textured surface that is ideal for outdoor use.

One important thing to note is that installing granite tiles without grout lines is possible, but it requires precision and accuracy.

Rectified tiles are cut at an angle to ensure they are accurate to 0.2 millimeters and do not have an unaligned look. This makes them a great option for those who want a seamless look without grout lines.

However, it is essential to use a leveling system to ensure that the tiles are level and do not have any lippage.

Materials and Tools Needed

Selecting Granite Tiles

When selecting granite tiles for a no-grout installation, it is important to choose tiles that are uniform in size and thickness. This will ensure that the tiles fit together tightly without the need for grout.

Additionally, choose tiles that have a polished finish to give your floor a beautiful shine.

Essential Tools

To install granite floor tiles without grout lines, you will need the following essential tools:

  • Wet saw: This is used to cut the tiles to the desired size and shape. A wet saw is preferred because it keeps the blade cool and prevents it from overheating.

  • Notched trowel: This tool is used to spread the adhesive on the floor before laying the tiles.

  • Grout float: This tool is used to press the tiles into the adhesive and ensure that they are level.

  • Rubber mallet: This is used to gently tap the tiles into place and ensure that they are tightly fitted together.

  • Sponge: This is used to wipe away any excess adhesive or grout that may get on the tiles during installation.

  • Level: This is used to ensure that the tiles are installed level and even.

  • Plastic spacers: These are used to ensure that the tiles are evenly spaced apart.

  • Fiberglass mesh tape: This is used to reinforce the seams between tiles and prevent them from cracking or shifting over time.

Preparation Steps

Before installing granite floor tiles without grout lines, there are some preparation steps that must be taken. These steps include surface preparation and layout planning.

Surface Preparation

To ensure a successful installation, the surface must be clean, level, and free of any debris. Here are the steps I take to prepare the surface:

  1. Remove any existing flooring or carpeting.
  2. Clean the surface thoroughly using a broom and a vacuum cleaner.
  3. Repair any cracks or holes in the surface using a suitable filler.
  4. Use a leveling compound to level the surface if necessary.

It is important to note that the surface must be completely dry before proceeding with the installation. Moisture can compromise the adhesive and cause the tiles to shift or crack.

Layout Planning

The next step is to plan the layout of the tiles. This involves determining the starting point, measuring the area, and making any necessary cuts. Here are the steps I take to plan the layout:

  1. Determine the starting point by finding the center of the room and marking it with a chalk line.
  2. Measure the length and width of the room to determine the number of tiles needed.
  3. Lay out the tiles on the surface without adhesive to determine the best placement and make any necessary cuts.
  4. Use a tile cutter or wet saw to make any cuts.

It is important to note that the layout must be planned carefully to ensure a seamless appearance without visible grout lines. This involves taking into account the size and shape of the tiles, as well as any obstacles in the room such as cabinets or doorways.

Installation Process

Setting the Tiles

Before beginning the installation process, I make sure to have all the necessary tools and materials.

These include granite tiles, fiberglass mesh tape, a honing stone, a 1/4-inch notched trowel, a putty knife, a margin trowel, a grout float, and plastic spacers.

To start, I prepare the surface by ensuring that it is clean, level, and dry. I then lay out the tiles to determine the best placement and make any necessary cuts.

Once the tiles are ready, I apply a thin layer of thin-set mortar to the surface using the notched trowel.

Next, I place the tiles onto the mortar, leaving a small gap between each tile to account for expansion. I use plastic spacers to ensure that the gaps are consistent.

After placing each tile, I use the margin trowel to gently tap it into place and ensure that it is level.

Sealing the Tiles

Once all the tiles are set, I allow the mortar to dry for at least 24 hours.

After the mortar has dried, I use a honing stone to smooth any rough edges on the tiles.

To finish the installation process, I seal the tiles with a high-quality stone sealer.

This helps to protect the tiles from stains and moisture and ensures that they remain in good condition for years to come.

Post-Installation Care

After installing granite floor tile with no grout lines, it is important to take care of it properly to ensure that it lasts for years to come. Here are some tips to keep your new floor looking its best:


Granite is a durable material, but it can still be damaged by harsh chemicals and abrasive cleaners.

To clean your floor, use a pH-neutral cleaner and a soft mop or cloth. Avoid using acidic or alkaline cleaners, as they can damage the surface of the tile.

If you spill something on the floor, clean it up immediately to prevent staining.


Granite is a porous material, which means that it can absorb liquids and stains if it is not properly sealed.

To protect your new floor, apply a granite sealer according to the manufacturer’s instructions. This will help to prevent stains and keep your floor looking its best.


To keep your floor looking its best, it is important to maintain it regularly. Sweep or vacuum the floor regularly to remove dirt and debris, and wipe up spills immediately to prevent staining.

If you notice any cracks or chips in the tile, have them repaired as soon as possible to prevent further damage.

By following these simple tips, you can keep your new granite floor tile looking beautiful for years to come.

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