We recently had LEATHERED granite countertops installed. We are waiting for the majority of the kitchen backsplashes to be cut to height in order to fit under existing wall tile, but one piece was installed already. The silicone is so shiny, it sticks out like a sore thumb. I applied some translucent silicone in one spot to experiment and it is not much duller. I can't imagine latex caulk or grout being an option with this application. I have reached out to our granite company, but I would also like to get other opinions.
Best Answer
Wow! Not how I ever installed any backsplash.
I would have applied a small bead of silicone to the bottom edge of the BS, install it on the counter top and push down and hold down until dry (sticks work, weight plates) and scrape off any silicone that squeezed out so all you see is a tiny or no seam. I would not apply it after the splash is installed, it never comes out right.
You can try to remove the excess carefully with a sharp razor blade and slice down between the splash/countertop and silicone very slowly and carefully and remove the excess unsightly silicone.
Tape never works, there will still be a raised edge that you will have to smooth out.