This project used slate tiles in different sizes that fit together in several patterns. Dry-fit the tiles before getting started to get the best look. To lay the tile, mix thinset tile adhesive according to the manufacturer’s instructions, then spread it on the barbecue surface with a notched trowel. Place the tile, wiggling it slightly to make sure it’s seated properly. Use tile spacers to ensure an even grout line between tiles. Make sure to let the tile adhesive dry completely before moving on to the next step.
Always wear safety glasses and a dust mask when mixing powdered tile adhesive or grout. Use caution when working with a drill or other power tools.