Glass Tile / January 21, 2019 / Annette Laforest
In this method colors are added to the top or bottom of the glass. Fused glass tiles are characterized with a translucent area and a layer of opaque color visible through the tile. These tiles are further treated with an etching or other coating for aesthetics or abrasion. Sintered tile is a variety made by pressing glass powder into dies and then heated until the particles fuse. The color is either added into the powder or added topically after cooling. Unlike smalti tiles sintered tiles tend to have a uniform look. This milky and scratch-resistant finish makes it versatile. Cast tile is made by inserting chunks of glass into a mold which gives it a layered look.
In situations where glass tile is exposed to extreme temperature differences an elasticizing polymer is added to the mix allowing the grout to stretch and flex preventing breaks from occurring in the delicate glass tiles. Using a grout float scoop a manageable amount of grout onto the float. Start at the farthest or highest spot away from you and spread the grout in between the tiles diagonally across the pattern. Dont worry about getting grout all over the tiles. The grout must be firmly pressed into the grout lines with the grout float covering all spaces and voids. Once a 3x3 section of grout has been applied to the tile use the small rubber edge of the grout float to remove about a third of the grout from between the tiles.
Choosing the right grout color to match your glass tile is essential to preventing blemishes and imperfections from being easily spotted. Because of the reflective surfaces on these tiles grout can disrupt the refraction of light easily catching the eye and revealing blemishes in the tiles. A suitable match is one that is similar in color to the tiles color. Mixing grout is as simple as making pancake batter. Use a paddle bit and a ½" drill to mix non-sanded grout into a five gallon bucket stirring in water slowly. Once the mix has achieved the consistency of pancake batter the grout will be mixed to perfection. Add more water or more grout as needed to thin or thicken the grout mix.