How to Install Mosaic Tile Sheets

Updated February 21, 2017

Mosaic tile sheets are a popular tile option for backsplashes, showers and bathroom floors. However, many homeowners are too intimidated to install mosaic tile sheets themselves. Installing mosaic tile sheets is an easy task for homeowners who have done their homework. Learn more about installing mosaic tile before beginning your next project.

Decide on a layout for the mosaic tile sheets. In many cases, this may not be important because you are working with such small tiles. However, you may find it easier to mark a starting point with a chalk line so that you install the tile along a straight line.

Mix the white latex-modified thinset mortar per manufacturer directions. The white thinset mortar generally works better when installing glass mosaic tiles. The white thinset does not darken the tiles when they are installed.

Spread the thinset mortar with a notched trowel. Use the flat edge of the trowel to evenly spread the mortar and the notched edge of the trowel to create even ridges. Even ridges in the mortar prevent excess mortar from squeezing through the tile joints and creating a mess that will need to be cleaned before grout can be applied. Once you have created ridges in the mortar, use the flat edge of the trowel to slightly flatten the ridges.

Place the mosaic tile sheets into the mortar. Carefully press the mosaic sheet into the thinset. Use a beating block and a hammer to tap all of the tiles into the thinset. Each of the tiles needs to be pressed into the mortar. The beating block and hammer help to easily press each of the tiles into place. Butt the tile sheets next to each other. Use scissors to trim the mosaic sheets to size as you install them. Tile nippers can be used to trim individual tiles to size.

Remove the plastic or paper face from the mosaic sheet after approximately 20 minutes. Not all mosaic tile sheets have a film on the front of the sheet. If the mosaic tile sheets have a film on the front, remove it. Paper film needs to be wet before removing it. The plastic or paper film should be removed diagonally. Allow the thinset mortar to dry for 48 hours.

Remove any dried thinset in the tile joints with a nylon brush. After the joints are free of thinset, apply grout to the joints with a rubber float. Once all of the joints are filled with grout, run the rubber float diagonally over the tiles to remove the extra grout. Wait 15 minutes and then use a sponge to wipe away the grout from the top of the tiles. Let the grout dry overnight before use.

Things You'll Need

  • Chalk line
  • White latex-modified thinset mortar
  • Notched trowel
  • Mosaic tile sheets
  • Beating block
  • Hammer
  • Scissors
  • Tile nippers
  • Grout
  • Rubber float
  • Sponge
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About the Author

Cadence Johansen is a freelance writer who enjoys writing about travel, marriage, family relationships, caregiver support, home improvement and money. Johansen has been writing professionally since 2008. She holds a master's degree in family studies from Utah State University.