How to Tile Corners of Your House

Installing floor tile and wall tile can be hard to do all by yourself. The whole process of extracting the old tile from your concrete floor to making it ready for your new tile, then actually installing it, is all very challenging. Especially when it comes to the tile corners of your house, we become genuinely clueless. Don’t worry, because we have all been there at one point or another.

I am going to use my personal experience of DIY tile flooring to guide you on the most crucial and hardest part of installing floor tiles on your household, the tile corners. It is hard because of its nature; it needs to be cut in a specific manner. But, what makes it as crucial as it is? It will ensure the symmetry of the tiles in your household place where you plan on installing those tiles. And when it comes to high-quality porcelain tiles for homes, revotile is the top option. 

The tile corners are the most important and difficult part of installing wall and floor tiles in your home. It is difficult to cut because of its nature; it must be cut in a precise way. What, however, makes it so important? It will ensure the symmetry of the tiles in the area of your home where you want to mount them.

What You Need For This

Before we move on to the central part of the discussion of how to tile corners of your house, you will need proper instructions. As to what kind of instruments you will be needing while going into this. 

If you are reading this article, it means you are done with flooring other parts of your household space, or you know enough to be confident to do it yourself. So, I will not bother you with the redundant information on what instruments you will need to do the whole tiling job. 


  • Tile Corner Trim
  • Thin Set Mortar
  • Tile Spacers


  • Gloves
  • Safety Goggles
  • Drilling Machine
  • Bucket
  • Rubber Hammer
  • Miter Saw
  • Wet Tile Saw

There are two kinds of corners we must consider. One is the interior corner, and the other one is exterior corners. The reason I’m separating these two is that they require a different method to install the tile.  You can also check out Comfy Home Corner for great tile saw options. 

Tiling Interior Corners

First of all, you will have two options while tiling the interior corners. On the one hand, you can use the tiles as they are, or you could use a corner trim. Both ways, the operation should not be that tricky if you follow the instructions correctly. 

Using Corner Trim

If you are tiling your washroom or bathroom corner trim will give it a uniquely modern aesthetic. Here are the instructions:

  1. Measure each tile as the walls cannot be perfectly vertical.
  2. If the tile is too broad, you have to adjust it with a tile nipper to fit perfectly.
  3. To tell whether the corner trim is plumb, use a spirit level. Adjust the trim accordingly.
  4. Add adhesive on the back of the tiles in order to fit them right. This should lock the plastic corner trim in place.
  5. To finish it off, use water-resistant grout and fill the void of the internal corners.

Without Using Plastic Trim

  1. Firstly, you have to use adhesive on the wall with a notched float. It makes sure that the tiles remain plumb.
  2. Install the tiles securing clearance space between 1/8th to 1/10th of an inch.
  3. To fill the void in the side corner, you can use caulk. Regular grout is not suitable for this kind of installation, as it may crack in months.

Tiling Outside Corners

Tiling the outside corners of your household space can be a pretty straightforward task given you follow the proper directions. External tile trims come in a myriad of shapes, sizes, and colors. It makes it easy to blend into any corner that you prefer. 

Outside tile trim paves your way to matching the tiles to your preference. And as always, it gives off a professional and clean look that you cannot otherwise get doing it yourself.

  1. Keep tiling the wall or floor in a professional manner as long as you do not reach the outside corner.
  2. Using a cutter, adjust the length of the corner trim. It will fit right into where you want.
  3. Using a significant spirit level, check if the corner is plumb enough. If not, try to readjust.
  4. Then you have to spread tile adhesive on the wall or floor whichever you are tiling.
  5. Then fasten the plastic corner trim, and before that, you have to make sure the whole thing is plumb enough.
  6. Leave the adhesive to try after installing the corner tiles. 
  7. And finally, apply grout.

Just like interior tile corners, you can choose not to use a plastic trim. The instructions do not change. But, it is essential to note that you might regret not using the plastic trim. Because just the addition of plastic trim gives your floor and tiles a professional look you have been looking for, that too, by doing it yourself.