Mosaic Backsplashes, Shower Walls and Countertops
Mosaic backsplashes and shower mosaics make great projects, and with a little thought, it is possible to come up with designs, even
figurative designs (pictures), which intergrate visually with existing tiling and decor.
One of our customers puts the finishing touches on her shower mosaic. Rhonda Gotway Clyde and Jessica Oldham made
this mosaic from bottles and plates they broke and tumbled in a rock tumbler.
This mosaic has great andamento (arrangement of tile in curves to suggest motion) and uses colors which tie it in
visually with existing tiling.
Thinset, Mastic or Weldbond?
Ordinary bathroom and kitchen tiling is mounted using a product called tile mastic, which is a water-based adhesive.
Why then do people say to avoid adhesives when creating mosaics in a shower?
The reason is simple: Bathroom tiles are typically 4 inches are larger, while the tiles used in an artistic mosaic are
usually smaller than 1/2 inch. This difference in tile size means that the artistic mosaic has more grout lines and thus
more places where can potentially penetrate behind the tile and weaken the adhesive over time.
However, mosaic backsplashes in both kitchen and bath CAN be installed using a white PVA adhesive such as
Weldbond provided the mosaic
is grouted properly and the grout is sealed with a tile and grout sealer, which is absolutely essential
on horizontal surfaces where water can pool. In fact, if the mosaic will be wet more often than dry, then
you should use thinset mortar instead of adhesive. (Thinset mortar is a sticky concrete that has
polymers mixed in for strength and adhesive properties.) For shower floors, for example, you would definitely
want to use thinset mortar instead of an adhesive. I should also note that while mosaic walls can be made
on drywall or plywood, you should use 1/2" concrete backer board for any floors to be tiled.
Use Mesh or Work Directly?
For large tiles, thinset is usually spread on with a trowel with 1/4" notches, and the tile is pressed into the
thinset quickly and efficiently. But artistic mosaic work has a different pace from architectural tiling just as
painting a portrait takes more time and care than painting a barn door. Many artists overcome this difference in
pace by first laying up the mosaic on fiberglass mesh or laying the mosaic upside down on paper or contact paper
(in what is called the reverse method). With all the detail work done in advance, the sheets of mosaic are then
pressed into spread thinset just as ordinary tile would be.
BUT, an artist often chooses to work in thinset directly and set one tiny tile at a time. Most people can figure out
how to do this when using an adhesive, which comes in small convenient bottles, but working with a sticky concrete
product like thinset mortar takes a little bit of thought. Fortunately, it isn't that difficult, and some simple
tools like palette knives or popsicle sticks and tweezers can take a lot of the frustration out of the process.
I have written a page for
how to use thinset for making mosaic art, which probably goes into more detail than you need for most projects.
Jason Hiller decided to work in situ instead of laying up the mosaic on mesh due to the nature of the design,
which integrates a mosaic figure (an octopus) with a non-mosaic background.
The finished octopus mosaic is probably a little too real for some people!
I consider this mosaic to be the antithesis
of the cutesy mosaics seen at most art and craft shows. Very nice work. Jason Hiller is a tile and stone contractor in the Bellingham,
Melanie Berry in Baltimore made this mosaic countertop with very calming colors and cobalt accents that make use
of patterned china shards.
More Great Mosaic Art
One of the largest collections of contemporary mosaic art online can be viewed at our
Mosaic Artists Gallery.
For some spectactular examples of mosaic artwork and a discussion of mosaic techniques, check out our page of
Inspiring Mosaic Art.
For a discussion of how to create photo-realistic mosaics and mosaic portraits, plus some great examples, see our page of
For examples of using different types of materials in the same mosaic, check out our page of
Mixed-Media Mosaic Art.
For examples of mosaics that are whimsical and fresh without being tired or cliche, see our page of
Fun Mosaic Art.