Easy to work with and makes a great impact. Only needed a utility knife (fresh blade), straight edge or ruler (metal works best) and a cutting surface.
  I used these in my RV. Kitchen area and bathroom sink. Put them over the existing vinyl surface. First I wiped down the vinyl with alcohol pads. I did have to trim away some of the silicone sealant that was on the edge of the wall to the counter, to make sure I had a nice clean fit. I've gotten many compliments on them.