The thickness of the tiles you’re using, as well as the spacing in between your tiles will determine how much of the No Days Groutless you’ll want to use. To illustrate this, I put together this sampler mosaic using 1/2″ thick ceramic tiles.
I chose to make this mosaic in a box with walls that helped to contain the multiple layers of No Days Groutless that I would be using to see if I could get it to rise up to the level of the thickness of the tiles.
As the No Days Groutless Mosaic Adhesive is heated, it liquifies, and you press down on the tiles to force the adhesive to get pressed out from in between the tiles which lets it rise up around the tiles.
Check out this older but still informative video primer for working with No Days Groutless Mosaic Adhesive: