Help!: Why's this tile got damp?

[frogeye]

H Jmp78

I posted a thread on this very same problem some months ago, so I can speak with some experience.
My tiles were from the Laura Ashley collection (wife's selection). I had tanked walls etc and used Bal adhesive and grout. I left it the full 2 weeks + before using the shower and all the tiles were of the same colour and shade - they only did white and cream.
The bottom 5 tiles (all cut into the bath) , plus another full tile half way up the wall gradually turned a darker colour - now almost blue. I tried what has been suggested - let it dry re grout and seal - it doesn't work!
I feel that the only alternative is to cut the tiles out and replace. I agree with the comment that it must be because the glaze is either defective or more possibly the glaze doesn't fully cover the edges that are left after grouting.
So don't waste your time letting it dry to re grout and seal ( I used a popular spray advertised on this site and it didn't work. Bite the bullet and replace, that's what I will be doing soon.

I was considering treating the biscuit of the new tiles with sealer to try to give me some protection against it happening again - anyone have thoughts on this?

frogeye ex tiler

[DEtileD]

Is most probably a glaze problem as people have already said. The Products used are all great, Dunlop not my favorite tanking system but will do the job when installed. I have had experience with that tile and know that in every 40-50 boxes you do get a few naff ones.
I'd cut out and start again. Hopefully your tanking system will hold up.

[fitzer]

tile looks a different shade - your grout joints look very well sealed - hard to see how water can get in there - especially if the shower head is not pointing directly on that wall - this happened to me before - when the tile shop had made up a box of tiles - after someone had previously taken samples out of box - only noticed the difference when tiling was finished and polished up - I know its only one tile but its happened to me with 3 before in a bathroom - nice bit of tiling tho

[jmp78]

Thanks to all that have replied to this problem. On reflection and seeing the experiences of others through this thread, perhaps it probably is a darker shade tile, there doesn't seem to be any alteration in its appearance over the past 4-5 days and looking at it closely it does seem to differ from those around it. If fact looking back through some photos taken whilst I was doing it, it can been seen although not so apparent whilst covered in haze, without the grout lines and shading in that area of the wall. (see attached, first row second tile up)

I guess I should be thankful its not water getting in! So do I replace it or leave it. That's my dilema now......... I assume the best way to replace would be rake out the grout around that tile, dril a hole in the center and break from there? My only worry is getting a good finish like it has now and no doubt I'll have to patch up the tanking if I do.

Or just leave it and forget about it over time..... I'm going to seal the grout with some of that Aquamix grout sealer for good measure!

[Dave]

YEP!! you are right ..looking at that pic........deffo a rogue shade tile.........if it annoys you that much change it..if not then leave it be...........