On Mon, 22 Jul 2013 12:54:51 -0400, "TomR" wrote:

Robert Macy wrote:
[note google has again goofed up my access to Usenet so I will not be
able to respond timely]

We have stone flooring that butts against the drywall.
Not sure, but think the stone is over thin masonite-like layer, over
some soft layer, over slab concrete. At the edge, it appears they
originally put in grout, but that grout crumbles out easily, plus
painting the wall down to the flooring does NOT make a nice edge.
What caluking, or something like that, can I use to make the
transition pliable to not crack in the future, yet hard enough to
resemble grout?

The drywall extends behind the stone tiles [stone tiles are 1/2 inch
thick] and most of the original grouting is cracked and crumbling
out. Worst construction technique I've seen in a long time, but I
have to change it. Just don't know how.

At the metal sliding doors, I plan on using clear, since overlap
won't show and the crack is dark enough to match the doors.

The stone is patterned, but generally, light cream colored limestone
out of Turkey.

I think that baseboard, of course, would be a good idea.

But, if you don't want to do that, then finding silicone caulk that matches
(or almost matches) the existing grout color would work. That will stay
flexible and it won't crack like the rigid grout is now doing.

Someone here mentioned that they sell sanded caulk in colors. I have never
seen that, but maybe you could look for that. Just make sure that it is a
type of caulk that's stays a little flexible and won't crack -- hopefully
that's what it is.

google laticrete sanded caulk. It's about $6 a tube.