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My kitchen has a stone backsplash and granite countertops. In some places there is a gap between the two, as illustrated below.

enter image description here

I would like to seal this gap to prevent moisture from getting behind the wall. Is a silcone-based kitchen caulk appropriate for this application? This backsplash was put in by the previous owner of the home and I am unfamiliar with the techniques and tools used to seal it. The areas that have no gap appear to have some sort of stone seal, like this:

enter image description here

Thanks for any help you can provide.

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up vote 2 down vote accepted

It looks like a sanded caulk. The big box stores have these in their tile areas. I would find something that matches your backsplash grout.

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