Putty should be used there, but first try to remove as much of the old grout as possible. If you want a putty of the same color, look at the tile. My splash guard is made of polished calacatta marble and my countertop is made of stainless steel. What should I use? Quartz Countertops near Brighton TN, sealant (is it different?), grout? It seems that whoever installed the tile splash guard may have used grout because it's not smooth and doesn't seem flexible, but I'm not sure.
It also seems to have a kind of tan or sand color (which I'm not sure I can ever match). It's inappropriate, so I'm not going to call him and ask him, not that he remembers. Putty and grout are commonly confused with each other, as both are used to fill gaps between different surfaces. Grout is most commonly used between tiles, for example, in a kitchen splash guard, and putty is used to fill spaces, such as the wall joint between the countertop and the splash protector.
The grout comes in the form of a dry powder and when mixed with water it becomes adhesive. Putty is a semi-liquid product based on latex or silicone. Grout can crack when hit with a heavy object or when it vibrates, while putty is more flexible as it is made of substances such as silicone and latex. The grouting process should be used to fill the space between the tiles, which are called grouting lines, while the sealant should be used to seal the gaps.
Transparent sealants (caulking) usually reflect a kind of gray appearance, as they reflect to some extent what's underneath. I would opt for a sealant that correlates with the color of the grout. You should use an ASTM C920 sealant which is normally a 100% silicone or polyurethane sealant. Custom Building Products sells a 100% silicone commercial sealant that comes in the same colors that come together.
