How To Fit Tile Trim Around Corners

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how to fit tile trim around corners

When you want a professional finish to your edge tiling, tile trim corners can help you by easily solving the problem of tile trims not meeting perfectly at the corners. Here, we’ll show you everything from tile trim corner types to practical installation tips.

Types of Tile Trim Corner

Here are some common types of tile trim corner that you might consider installing around corners:

Internal Corners

internal corners

Interior corners can be used to provide a neat, professional appearance where two tile walls meet at an interior angle (90 degrees). These corners cover the exposed edges of the tiles, protecting them from damage and enhancing the overall aesthetics of the tiled surface. Often used for kitchen countertop corners and bathroom corners.

Round Edge Corners

round edge corners

Round edge corners, also known as bullnose corners, features a rounded edge that is ideal for giving a soft, curved finish to the tile work. This style is particularly popular in designs where sharp edges are to be avoided, such as in bathrooms or kitchens where safety is a priority. Round edge trims are great for framing windows, mirror edges, and other features in a room.

Square Edge Corners

square edge corners

Square edge corners are characterized by their sharp, right-angled edges that meet to form a precise and clean joint, providing a seamless and cohesive look when tiles are installed adjacently. These corners are crafted with meticulous attention to detail to ensure perfect alignment and integration, offering a sleek transition between the tiles and surrounding walls or edges.

Ideal for both residential and commercial settings, square edge corners enhance interior spaces with their clean, contemporary aesthetic. They also serve a practical purpose by protecting the tile edges from damage, thereby contributing to the durability and longevity of the installation.

Triangular Edge Corners

triangular edge corners

Triangular edge corners are designed to blend functionality and aesthetics seamlessly, ensuring a clean and professional finish across tiled surfaces and walls. These corners are especially valuable in areas that are susceptible to impacts, such as kitchen countertops and bathroom walls, where they provide crucial protection against chips and damage. 

Ideal for enhancing modern kitchen backsplashes or elevating the elegance of bathroom renovations, triangular edge corners introduce sleek, contemporary lines that enhance the overall design of a space.

Straight Edge Corners

straight edge corners

Straight edge corners are designed to serve both aesthetic and functional purposes in tiled areas. They effectively conceal and safeguard the raw edges of tiles, providing a polished and professional finish. Available in a variety of finishes and sizes, including polished chrome, brushed chrome, and matt silver, these trims are well-suited to high-traffic areas such as kitchens and bathrooms. In these environments, straight edge corners are crucial for protecting against chips and wear, ensuring the long-term durability and appearance of the tile installation.

Tile Trim Corner Installation Steps

Measure and Cut

First, accurately measure the length of the corner where the tile trim will be installed. Then, use a tape measure to mark the length along the tile trim. Use a saw to cut precisely along the mark, ensuring the cutting angle is correct so that the tile trim will fit perfectly in the corner or joint.

Prepare the Surface

Ensure that the tile surface around the corner is clean, dry, and dust-free. Use a cleaning solution and a dry cloth to thoroughly clean the wall or tile surface, removing any dust or stains that might affect the adhesive. If there are any uneven areas on the wall, use sandpaper to sand them down or a sander to smooth the surface, which will help the tile trim be securely installed.

Apply Adhesive

Choose an adhesive that is compatible with the tile trim material. Use a spray gun to apply an appropriate amount of adhesive evenly on the back of the trim, trying to avoid any overflow at the edges. Additionally, you can also buy tile trims that come with self-adhesive backing. Simply peel off the protective film and install it directly.

Press Trim Into Place

Position the tile trim along the corner carefully, ensuring it aligns precisely with the tile edges. Once in place, apply gentle but firm pressure along the length of the trim to secure its bond with the surface.

Secure With Tape

To hold the tile trim in place before the adhesive sets, you can use painter’s tape or similar mild tape. Apply the tape along the trim at regular intervals to ensure it does not twist or shift out of alignment.

Tips for a Flawless Tiling Trim Finish

  • When choosing tile trim, select one that matches the color, texture, and installation environment of the tiles.
  • You need to measure and cut the tile trim carefully to ensure precise installation.
  • Before installing the trim, thoroughly clean the wall surface and the contact surface of the tiles.
  • Apply the adhesive evenly, and wait for it to become slightly tacky as specified in the instructions before installation.
  • After installation, immediately clean up any excess adhesive to keep the installation area tidy.
  • Learn more from our guide to tile trim.


Choosing the right tile trim corner is crucial for corner tiling. It enhances the overall look of the space while protecting the tile edges from wear and tear.NIUYUAN offers a variety of tile trim edges, including outside and inside corner options.

If you’re not sure which tile trim edge to choose, don’t hesitate to ask our team of professionals for advice. They can provide valuable insights and suggestions based on your specific project and design preferences. Contact us today!

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