To install your backsplash, you will need to have the right tools and materials including thin-set, polyurethane, un-sanded grout, and speed square. Start by planning your tile layout, taking the measurements depending with the desired size of the backsplash. Once you do this, mix the thin set mortar, and apply according to the directions given by the manufacturers. Make sure that mixture is as thick as creamy peanut butter. Apply thin-set on the marked wall space using a trowel and maintain the right depth. Start putting the glass tiles on the thin-set, covering 2-square-foot area at-a-time. Make sure that you have a wet sponge to clean the tiles as you go on.
During the installation, make sure that you have the necessary list of friendly adhesives and sealants to avoid any backfiring of the project. Always make sure that you tiles are level as you apply them to the thin-set, keeping the desired space between then as you continue. Ensure that the excess mortar is cleaned before drying up. Apply the grout consistently according to the manufacturer’s recommendations making sure that you do not apply pressure. Allow the drying process to complete and then wipe your tiles with a wet sponge. While doing this, make sure that you do not indent the grout lines. Once the grout is dry, clean the haze off with a wipe with a soft sponge
text from https://backsplash.com/glass-tile-backsplash-ideas-for-your-remodeling-project/