Tile Crack - Advice Needed

[hmtiling]

It's hard to see in the photo, but does the hairline run through the grout?

 

[Thoughts]

Hi, no it is just on the one tile, it doesn't touch the grout

 

[Spare Tool]

The thought of it being a fault in the tile re-assures me greatly - that would mean it would be unlikely to occur elsewhere right?

Hard to tell from the pic, have you not noticed it before, is it a crack or a fault, if it wasn't there last week its a crack?

 

[White Room]

On your first picture which is a close up, the glaze seems to curve into the mark on the white areas.

 

[hmtiling]

Hi, no it is just on the one tile, it doesn't touch the grout

My guess would be fault in the tile then.

 

[Thoughts]

Whitebeam, yes I have just gone to inspect that aspect more closely and it does seem to curve slightly in the white areas. I'm unclear as to what this means though?

 

[Thoughts]

I really don't know when it appeared. It is perfectly possible it has been there a while. I have been talking to people recently about their cracked tiles which may well have made me look for it more.

This might be a really stupid question, but can I definitely rule out it being that the underfloor heating is too hot? I turned it off as soon as I saw it but would quite like to turn it back on if that isn't the cause!

If it is a fault in the tile, is it likely to just be that tile, or would it then be likely they are all no good?

 

[Time's Ran Out]

don't like to say this 😡 but i agree with timeless 🙄

With the Ditra in the later pics it would seem as though we may both be wrong.
Serves you right for agreeing with an old fart!

 

[White Room]

Whitebeam, yes I have just gone to inspect that aspect more closely and it does seem to curve slightly in the white areas. I'm unclear as to what this means though?

When the tiles has been fired the glaze would probably have formed into the mark, the mark may have even happened during the firing process.

 

[Spare Tool]

I really don't know when it appeared. It is perfectly possible it has been there a while. I have been talking to people recently about their cracked tiles which may well have made me look for it more.

This might be a really stupid question, but can I definitely rule out it being that the underfloor heating is too hot? I turned it off as soon as I saw it but would quite like to turn it back on if that isn't the cause!

If it is a fault in the tile, is it likely to just be that tile, or would it then be likely they are all no good?

Your ufh can't get too hot to crack a tile, it's what's under your ufh that can cause a crack.. Seems strange to me that the ditra is at the bottom of the makeup?