shower tile crack too wide for grout

I have a shower to grout, with a crack that is too wide. About a quarter inch. It's a vertical corner, photos here:
http://members.dslextreme.com/~dmorgan1/shower /
Should I fill this with something, then grout it? What should I fill it with?
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Just caulk it. Tom
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It doesn't look too wide for grout to me. Just fill it well.
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david wrote:

It's good practice to use a color matched caulk, preferably mildew-resistant silicone, to fill joints at changes in surface planes - ie, walls to floors, wall to intersecting wall, etc.
R
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It's definitely not to wide for grout, however, if the wall was not framed correctly and that bump out was not nailed off correctly (the wood framing) the wall will always flex. It's possible that's why all the grout fell out. In that case you're better off with a flexible caulk.

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My guess is that this crack opened up over a long period of time and probably isn't moving much any more, if at all.
Pack it with sanded grout, using a rubber grout float. Push the grout in hard until it won't squish in any more. Later, if you notice a hairline crack in your repair, indicating continued movement, you could caulk over it.
thetiler
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Just what I was going to recommend too.
Sanded grout is made for wide gaps, just what you have there.
I would say put that in and make it flush. Let it dry and put a bead of caulk on it to seal it up (and look better)
Tom
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snipped-for-privacy@gmail.com wrote:

Why would you want to cover grout with caulk instead of just caulking it in the first place? I suppose if the OP has sanded latex-modified grout on hand, in a color that matches the wall grout, that would work, but a tube of caulk would probably be cheaper.
R
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