I used a piece of clear coated exterior skin. The same as was installed as the kitchen backsplash. I did take out the cupboard and trapped the skin under the edge of the cupboard. I found it unnecessary to remove the counter top. The clamping force of the cupboard and the adhesive hold it in place very well along the lower edge of the aluminum. Just caulked with a silver caulk and it holds nicely.
"If the women don't find you handsome, they should at least find you handy." - Red Green