How do I tile straight in a internal corner?

Hi Can anyone help what is the best way to make an internal wall when tiling look straight . I had my first attempt at tiling a few years ago still not that good and it has survived at the back of the shower and side of shower. My previous attempt I tiled in to the corner and cut the tiles to fit and no edging and a thin line of sealant between the two. This time I was going to try using a plastic strip and whole tiles and have the cut tiles at the end of the window and by the sink to hide not very good cuts . But I am not sure which wall the plastic strip should be on as I have not found a edging strip for an internal corner and the corner is off so would it work anyway . Any advice please . Thank you

  3 answers
  • William William on Dec 28, 2018

    No plastic strip in corners. just a bead of silicone caulk. When tiling always start from the center of the wall and work your way to the corners. No corners are 100% plumb straight. Even with new construction corners are slightly off. Cut tiles in corners should be the last installed after the full tiles are up. Then measure for each cut tile and put them up. A bead of caulk in the corners. Walls will flex and move so you need the corners to be flexible also.

    • Sandy Slade Sandy Slade on Dec 28, 2018

      Thank you.That's exactly how I did it before but obviously I was not very good. Why would you not use edging strip on one wall only in the corner please. Thanks

  • Joy30150932 Joy30150932 on Dec 28, 2018

    If you are having trouble trying to find the proper piece for an internal corner, look for a plastic moulding or wooden one that has a corner at the back. The wood can be painted to match your tiles so it will not be so noticeable. No matter what you do, once you install it you really will not notice it that much.

  • William William on Dec 28, 2018

    No edging strips at all. Just silicone caulk in the corners, around windows, tub. etc.