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What to use to fix crack in corner of shower grout?

The crack is a long vertical crack in the grout in the corner of my new tile wall. I've been told to use three different things at the different DIY stores and so not sure what is correct and what will make it look nice when done.

Update:

I should have said the corner is grouted between two walls and the crack is long and almost goes from shower floor to top of tile in this crack.

6 Answers

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  • ?
    Lv 4
    5 years ago
    Favorite Answer

    Silicone caulk. Corners shouldn't have been grouted as they will crack.

  • 5 years ago

    You can remove the damaged grout and get some more from the store to fill it in. Thenot clean the grout lines incase the new grout looks different

  • Anonymous
    5 years ago

    I think the key is to dig out much of the old grout with screw driver, can opener or other tool and then re-grout it. I would take what i gathered from the salesmen or else pick blind. It could reappear if there is something structurally wrong.I would hate to see an amateur line of silicone.

  • 5 years ago

    Corners in tile should be sealed with sealant, not grouted.

  • XTX
    Lv 7
    5 years ago

    Use white concrete and then paint all grout lines with grout sealer .... these things are available at Lowe's or the HoDepot ..... ask for clerk in store to help you ........

  • Anonymous
    5 years ago

    like david said that joint should be silicone caulk, all the corners should be a quality caulk

    all building materials expand and contract and grout is not forgiving to this movement, the silicone will be

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