Glass Tile / January 19, 2019 / Morgana Faubert.
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.
The most important step in putting glass tile in a swimming pool is choosing the right installation materials. To reiterate the high rate of expansion and contraction of glass caused by temperature changes is the leading cause of cracks and damage to installed tiles. In order to compensate for this special thin-set adhesives and additives have been developed that expand and contract with the glass. The leading manufacturer of glass-specific tile adhesive systems is MAPEI and their Adesilex P10 thin-set and Keraply additive can be combined into an installation system that is specifically designed for applications where the glass tiles are completely submerged.
Usually they are available mesh mounted on a fiberglass sheet or as field tiles such as subway 3"x6" 4"x4" 6"x6" and even 12"x12". Stained clear glass tiles are made of clear/translucent glass that are stained during its manufacturing process and then cut into multiple pieces. In this case you can see all the way through it even if it has a dark stain color and that is the reason they are not mesh-backed otherwise you would see the mesh through the glass even after installed. Instead they are mounted on clear-faced or paper-faced sheet. Plain or non-colored clear glass tiles are made of clear/translucent glass and do not have color in it. Though the word "plain" is used to describe these types of tiles they are extremely elegant and easy to work with if you want to give a special "touch" to a kitchen backsplash bathroom and shower or swimming pool.
The reason so much more grout is removed than when grouting conventional tile is because light refracts better through the glass tile when the sides of the tiles are exposed to the light. Work 3x3 spaces for about ½ hour or until the grout begins to dry then sponge off the grout. Bring several buckets of clean water and a sponge to the work area before you begin. Soak up some water into the sponge and gently wipe away the excess grout that is adhered to the tile. Smooth the grout lines with the sponge using one continuous swipe. Flip the sponge over and swipe more grout from the tiles until it becomes full of grout. Rinse the sponge in a clean bucket of water and repeat.