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.
Filling gap between backsplash and wall.
The company that installed the counter didn t.
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.
Darciegage2 has the best solution.
Grout is no used between countertop and wall tile.
Depending on the depth of your backsplash and the type of countertops you have a gap may exist where the countertop meets the wall.
If the gap is too wide to seal with silicone narrow trim molding can solve the problem.
A pencil tile trim would cover the gap.
Big box stores have them.
An obvious gap between a countertop and backsplash is unattractive and it can allow water to seep through.
2 phillips bit a flat pry bar wood shims and a hammer.