Upgrading your kitchen backsplash creates a visual appeal that can complement your style or make it stand out while protecting your walls from everyday use. Installing a backsplash can be a simple and budget-friendly DIY project. Once you have prepared your working area, apply an adhesive to a small section of the wall to lay your first piece. Repeat this procedure working in small sections at a time until the desired area is covered. Mix, apply, and seal the grout, if necessary. Finally, fill the expansion gaps with caulk and a caulking gun for easy application, and use finishing tools to remove any excess amount while giving your project a finishing, professional look.