What kind of trim should I use for an aluminum backsplash behind a stove?
I'd go with Aluminum Flat Bar. Very easy to work with for drilling, scribing, mitering, cutting, beveling &amp; just gluing up to the backsplash whether you want to frame the backsplash or just top it. If you want a to fill an upward &amp; outward gap then the Aluminum Angle or Square Tube options in the link above would fit the bill perfectly.