This is a renovation we did in a condo downtown. The backsplash is done with a glass subway tile in a random staggered pattern. It was set with ReliaBond Tile Adhesive and grouted using a high performance, stain resistant Prism Grout. To set the ledgestone wall feature we used a product called ProLite LFT Mortar. There are no spaces between each sheet of stone which means there is no grouting necessary!