Darciegage2 has the best solution.
Filling gap between backsplash and wall.
Even if the gap is small and not particularly noticeable filling the gap with caulk prevents crumbs splattered oil and other small kitchen debris from collecting behind the countertop and gives the area a more.
A pencil tile trim would cover the gap.
Qevery winter the caulk in the 1 16 inch gap between my silestone counter and backsplash dries up allowing spills to reach the wall behind.
If the gap between the countertop and backsplash is more than 3 8 inch it s generally too wide to fill and is best handled with trim but you can try to close the gap to give yourself the caulk option.
You ll need a drill with a no.
2 phillips bit a flat pry bar wood shims and a hammer.
Caulk normally used would not work because it s too large a gap.
The company that installed the counter didn t.
Big box stores have them.
If the gap is too wide to seal with silicone narrow trim molding can solve the problem.