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.
Gap between backsplash and wall.
If there is gap due to defect of the wall it is not square then the countertop should have been cut to accommodate that.
Even if the gap is.
Depending on the depth of your backsplash and the type of countertops you have a gap may exist where the countertop meets the wall.
On nov 26 2017.
Hometalkers are the best.
2 phillips bit a flat pry bar wood shims and a hammer.
That way it would be thick enough to cover the gap but have something.
Connecting the counter with the wall or backsplash.
You ll need a drill with a no.
We surprise ourselves with what we can come up with when we find a problem.
Only other way to mitigate it is to have a backsplash made out of the same countertop material.
A kitchen backsplash not only protects your walls from splattering oils grease and other food products it has an aesthetic value all its own.
I would not be comfortable with caulking of that size.
Want to add a backsplash but have a gap between the wall countertop.