How to Install a Quarter Round Ceramic Tile Trim

Written by b. ellen von oostenburg
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Quarter round tile trim is most often thin, narrow and delicate in appearance. Installing it is like adding the icing to a cake. It's the finishing touch that pulls the design elements of a tile installation all together. The small details like quarter round make a project sing. This particular ceramic trim offers a beautiful completion to any tile installation.

Skill level:


  1. 1

    Lay the field tile for the installation. Field tile are the tiles that fill the large expanses of the tile installation.

  2. 2

    Trim the edges of the installation with the quarter round ceramic tile trim. Pick up each piece trim one at a time and apply, mortar or mastic to the back of it with a trowel or small spatula. Don't skimp on the adhesive.

  3. 3

    Press the quarter round in place. Wiggle it slightly back and forth to ensure good adhesion to the bed of the installation.

  4. 4

    Stand back from the installation periodically and check that the quarter round trim is reading straight. If its not, readjust individual pieces.

  5. 5

    Allow the mortar or mastic to set up before applying grout.

Tips and warnings

  • The mortar might ooze out around the edges when pressed into place. Be sure to clean excess mortar away so grout can be worked in all around the trim pieces..
  • Quarter round trim tile can be fragile. Be careful not to accidentally snap it when setting it.

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