We put up the backsplash in the kitchen in July 2013. It's a very thin small glass tile pattern that came in 12 in square sheets at Home Depot. We did not take the paper off the walls. Just went right over it. We used a product called Simplemat to put the tile up and regular grout. It has traveled over 10k miles and looks exactly like it did when we put it up. No issues at all. (The one in the bathroom has only been in a couple months but it hasn't been affected by travel either.)