tiles lifting

[charlie1]

just had call. fitted around 10 m2 porcelain 60x60s (porcelaiosa) 3 weeks ago. substrate anhydrite screen... rubbed down and primed.... tiles are lifting??? all materials are butech. adhesive stuck to floor but not tile... any ideas? no pics yet!.... now all i can say is, adhesive has not skinned or anything like that... ?

 

[Andy Allen]

did you skim the back of the tile?

 

[Diamond Pool Finishers]

Ok i was expecting you to say the bond between the adhesive and substrate , well was there any dust,wax or oil on the surface of the back of the tiles that may have INTERRUPTED the bond ?

 

[Gazzer]

Silly question but was the adhesive suitable for porcelain and was there UFH and has this been switched on ?

 

[charlie1]

no ufh and adhesive was suitable. yes..back skimmed. i noticed adhesive had a few lumps through it which i sived out

 

[nybor62]

was addy mixed with the right ratio of water , a thick mix could be the culprit imo

 

[charlie1]

know what you mean nybro but don't think so...just usual consistancy

 

[White Room]

You say there were small lumps in the powder, how old was the adhesive....

 

[Spud]

did you use a mechanical mixer drill?

 

[The Legend; Phil Hobson RIP]

I have just spoken to Mark ( Charlie 1) about this, it seems strange, to have a failure, I know Mark is very keen on doing things right, and can only think the adhesive was perished or a bad batch. Imo I think Butech rep should do some tests, good luck with it Mark.