How To Cut Ceramic Tile That Is Already Installed? [Easy Process]

How To Cut Ceramic Tile That Is Already Installed

Ceramic tiles are a popular choice for flooring, walls, and backsplashes due to their durability and aesthetic appeal. However, during home improvement projects or renovations, there might be situations where you need to trim already installed ceramic tiles. But how to cut ceramic tile that is already installed?

To cut already installed ceramic tiles, gather safety gear, mark cut lines, and use an angle grinder with a diamond blade. Cut slowly, cool the blade, check the fit, and clean up for a professional finish. Prioritize safety and precision throughout the process.

In this guide, we will take you through a step-by-step process to help you tackle this job with precision and avoid damaging the surrounding tiles. Stay tuned to learn the process. 

Before cutting installed ceramic tile, you would need the set of tools and materials mentioned below: 

  • Tape measure: For accurate measurements.
  • Pencil or marker: To mark the cutting lines on the tile surface.
  • Safety goggles: To protect your eyes from flying debris.
  • Dust mask: To avoid inhaling tile dust particles.
  • Angle grinder or rotary tool with a diamond blade: The preferred tool for cutting already installed ceramic tiles.

Best Way To Cut Installed Ceramic Tile: Learn In 6 Steps

Cutting ceramic tile after installation sounds daunting as it is a bit complicated. However, with the right process and tools, you can accomplish the task.

Step 1: Mark Your Cut Lines

Once you have all the tools ready, carefully measure and mark the cut lines on the tile surface. Use a straight edge or a tile spacer to create precise and even lines. Ensure that the marked lines are visible and easy to follow during the cutting process.

Step 2: Put on Safety Gear

Before you begin cutting, put on your safety goggles and dust mask to protect yourself from potential hazards and dust inhalation.

Step 3: Make the Cuts

Using an angle grinder or a rotary tool equipped with a diamond blade, start cutting along the marked lines on the ceramic tile. Go slowly and steadily to maintain control and prevent any accidental slips that may damage the tile or surrounding tiles. Allow the tool to do the work and avoid applying excessive pressure.

Step 4: Cooling the Blade

Cutting ceramic tiles generates heat, which can lead to overheating of the diamond blade. To prevent damage to the blade and achieve cleaner cuts, pause periodically to allow the blade to cool down. You can also dip the blade in water to help keep it cool during the cutting process.

Step 5: Check the Fit

After making the necessary cuts, check the fit of the tile around the obstacle or in the desired layout. Ensure that the trimmed tile fits snugly and looks seamless with the surrounding tiles.

Step 6: Clean Up

Once you have successfully cut the ceramic tiles, clean up the area by removing any debris and tile dust. Wipe the tiles with a damp cloth to remove any residue from the cutting process.

10 Tips About How to Cut Ceramic Tile Already Installed on the Wall

Cutting ceramic tile already installed on the wall can be a tricky task, but with the right approach and tools, you can achieve clean and precise cuts. Here are some tips to help you master this technique:

  1. Safety First: 

Before you start cutting, ensure you have safety goggles and a dust mask to protect yourself from debris and tile dust.

  1. Select the Right Tool: 

For cutting installed wall tiles, a rotary tool or an angle grinder equipped with a diamond blade is ideal. These tools provide the necessary precision for intricate cuts.

  1. Mark the Cutting Lines: 

Use a pencil or marker to mark the cutting lines on the tile’s surface. Be precise with your measurements to avoid errors.

  1. Test Cuts: 

Before making any cuts on the installed tiles, practice on spare tiles to get a feel for the tool and to ensure you’re comfortable with the cutting process.

  1. Support the Tile: 

To minimize vibrations and chipping, place a piece of cardboard or wood behind the tile where you plan to make the cut. This provides additional support and helps maintain tile integrity.

  1. Cut Slowly and Steadily: 

Resist the temptation to rush the cutting process. Work at a controlled pace, following the marked lines with precision.

  1. Cool the Blade: 

Cutting tiles generates heat, which can damage the blade or cause rough cuts. Pause periodically to let the blade cool down or consider using a blade designed for wet cutting to keep it cool.

  1. Coping Technique for Curves: 

When dealing with curved cuts, use the coping technique. Make a series of small straight cuts along the curve, and then use tile nippers to nibble away the excess tile until the desired curve is achieved.

  1. Bevel Cuts: 

For bevel cuts, adjust the angle of the blade to the desired degree, and make slow, shallow passes to achieve a clean and precise beveled edge.

  1. Finishing Touches: 

After making the cut, use a tile file to smooth any rough edges and ensure a seamless finish.

7 Mistakes to Avoid When Cutting Ceramic Tile Already Installed on the Floor:

Cutting installed ceramic floor tile requires careful attention and precision. Avoiding common mistakes will ensure that you achieve clean cuts and maintain the integrity of the installed tiles. Here are some crucial mistakes to avoid during the cutting process:

  1. Skipping Safety Precautions: 

Safety should be a priority. Always wear safety goggles and a dust mask to protect yourself from debris and tile dust while cutting.

  1. Not Measuring Accurately: 

Carelessly measuring and marking cutting lines can result in uneven cuts or misaligned tiles. Take your time to measure accurately and double-check before cutting.

  1. Rushing the Cutting Process: 

Trying to rush through the cutting process can lead to mistakes and uneven cuts. Work slowly and steadily to ensure precision.

  1. Ignoring Test Cuts: 

To cut installed ceramic tile successfully, practice on spare tiles to familiarize yourself with the tool and get a feel for the cutting technique.

  1. Not Providing Adequate Support: 

Cutting tiles without proper support can cause vibrations and lead to chipping. Place a piece of cardboard or wood behind the tile where you plan to cut to minimize vibrations.

  1. Using Excessive Pressure: 

Applying too much pressure while cutting can cause the tile to crack or break. Let the tool do the work and use a gentle, controlled motion.

  1. Neglecting Bevel Cuts: 

Bevel cuts are commonly required for a professional finish, especially near edges or corners. Not using the beveling technique can result in awkward-looking tile installations.


Can I Cut Ceramic Tiles That Are Already Installed Without Damaging Them?

Yes, it is possible to cut installed ceramic tiles without damaging them if you use the right tools and techniques. An angle grinder or rotary tool with a diamond blade allows for precise cuts. Go slow, follow marked lines, and let the blade cool periodically. Prioritize safety and practice on spare tiles before attempting cuts on installed ones.

What Safety Measures Should I Take While Cutting Ceramic Tiles?

Always wear safety goggles and a dust mask to protect your eyes and lungs from debris and dust. Ensure a well-ventilated area to avoid inhaling excessive dust. Take breaks to rest the blade and cool it down to prevent overheating. Work with steady hands and avoid rushing to reduce the risk of accidents.

Can I Use A Regular Blade To Cut Ceramic Tiles?

Using a regular blade for cutting ceramic tiles can lead to chipping and uneven edges. It is recommended to use a diamond blade designed specifically for cutting tiles. The diamond-coated edge ensures clean and precise cuts, minimizing the risk of damaging the tile.

How Do I Mark The Cutting Lines On The Ceramic Tiles?

To mark the cutting lines, use a tape measure for accurate measurements and a pencil or marker to draw the lines. Ensure that the lines are clear and visible to guide your cutting process accurately.

Can I Use A Wet Saw To Cut Installed Ceramic Tiles?

Using a wet saw on installed tiles is not practical or safe. Wet saws are typically used for larger, straight cuts on large tiles before installation. For cutting installed ceramic tiles, an angle grinder or rotary tool with a diamond blade is more suitable.

What If I Need To Cut Irregular Shapes In The Ceramic Tiles?

For irregular cuts or curved shapes, you can use tile nippers or a tile file. Tile nippers allow you to carefully nibble away small sections to achieve the desired shape, while a tile file can smooth and refine the edges after making the initial cut.

Should I Apply Pressure While Cutting The Ceramic Tiles?

Avoid applying excessive pressure while cutting to prevent damage to the tile and ensure a clean cut. Let the tool do the work and use a steady, controlled motion to guide the cutting process along the marked lines.

How Do I Prevent Chipping While Cutting Ceramic Tiles?

To prevent chipping, use a sharp diamond blade and cut slowly along the marked lines. Support the tile with your hand or a stable surface to minimize vibrations. Additionally, consider applying painter’s tape along the cutting line to reduce the risk of chipping.

Can I Cut Already Installed Ceramic Tiles At Any Angle?

Yes, an angle grinder or rotary tool with a diamond blade allows you to cut ceramic tiles at various angles. Whether you need straight cuts, bevels, or notches, the right tool and technique will help you achieve precise cuts at any desired angle.

What If I Make A Mistake While Cutting Installed Ceramic Tiles?

If you make a mistake while cutting the tiles, it’s essential not to panic. Assess the damage and consider if it can be concealed or if you need to replace the tile. Having spare tiles on hand can be helpful for such situations. Remember that practice and patience will improve your cutting skills over time.


Now you know how to cut ceramic tile that is already installed. By following the step-by-step process outlined in this guide, you can safely and effectively cut ceramic tiles to fit your desired layout or work around obstacles. 

Always prioritize working slowly to avoid damaging the surrounding tiles. With the right approach, you can master the art of cutting ceramic tiles and complete your home improvement projects with confidence.

Jahidul Alam

Hello dear! This is Jahidul Alam. I am the admin of this Tidy Floor. I have been in the floor cleaning business for the last 20 years. My business is all about ensuring affordable flooring cleaning services for Americans.

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