What the heck has happened to my tiles?!

[stumperchov]

hi guys, thanks for all this... giving me a real lesson if nothing else. I have uploaded some images, take a look and let me know if this cements your thoughts...
tilersforums.com | Tile Forums | Tiling Forum - stumperchov's Albums

To let you know, the walls are breeze block and not timber so I don't think the wooden lathe comes in to it... but what do I know!? Please shoot me down if talking crap.

As mentioned previously the three other walls were replastered. Do you think I should remove all remaining tiles on this wall and do the same? Or, can i get away with repairing the affected area? If so, how? thaks

 

[Colour Republic]

That really is cracked! which I would say is caused by compression not expansion to crack like that

 

[White Room]

hi guys, thanks for all this... giving me a real lesson if nothing else. I have uploaded some images, take a look and let me know if this cements your thoughts...
tilersforums.com | Tile Forums | Tiling Forum - stumperchov's Albums

To let you know,the the walls are breeze block and not timber so I don't think wooden lathe comes in to it... but what do I know!? Please shoot me down if talking crap.

As mentioned previously the three other walls were replastered. Do you think I should remove all remaining tiles on this wall and do the same? Or, can i get away with repairing the affected area? If so, how? thaks

So where was the lime mortor coming from when you took the tile off, breeze block was'nt about then it was clay bricks

 

[Colour Republic]

So where was the lime mortor coming from when you took the tile off, breeze block was'nt about then it was clay bricks

He said it was old dusty and mixed with hair. I thought the same as you when I read it.

Have you seen the pics? i don't think it's breeze block under there, he might have got confused with an internal wall that was built at a later date

 

[White Room]

Looks like a gypsum finish but has it been primed, the adhesive looks gritty to me

 

[Max_Damage]

The cracked tile looks like crazing. Are the tiles flat or bent?.
Do you have an original dry tile left to test for craze resistance?

This is caused by moisture expansion of the bisque making the tile bow out from the middle of the tile. The glaze is in compression to prevent crazing but will fail if the bisque expands.

 

[jay]

deffo something going on whats the name of adh and was plaster wet as it looks wet

 

[jay]

sorry i was missing the main prob poor prep work way to much paint on walls no sign of walls be spread with adh tiles must of been loaded with adh and laid seems to be two types of adh used and if built out in one go not a good practice .due to weight of tiles and adh tiles have debonded from wall causing it to bow away until finally something gave , recommend you tap rest of wall to see if its sound.😳

 

[stumperchov]

Everyone, all of the above information has been invaluable - thank you. I have explained a number of possible explanations to the guy who project managed the bathroom and he is satisfied that this is something we can resolve with some confidence that the issue won't reoccur.

I still want to find out info on the adhesive used, and will pass this on once I've got it.

I'll let you know how I get on.
thanks
Tom

 

[Bolter]

Interesting thread, hope no-one minds if I post this and therefore subscribe 🙂