Tiles de-bonding from new house

[Ajax123]

[QUOTE="Anthony, post: 923819, member: 51465"]Sounds like calcium sulphide screed. A gypsum based adhesive required. Cement based adhesive reacts with it causing debonding. Also was the floor sanded? There’s a mineral that forms on top that needs to be sanded off. A lot of adhesive manufacturers say you can use cement based adhesive but needs to be primed twice diluted first. Neat for the second. But I’m not convinced. I use UltraTileFix csa[/QUOTE]

No it doesn't....

 

[Tile Shop]

Just out of interest, are there any of the Larsens Primer bottles knocking about or do you know exactly which one was used? Are we 100% sure it was acrylic? I'm just wondering if the smell may have been Acetic Acid/Acetone from a reaction with PVA and the adhesive?

If the Larsens PVA Bond was used as a primer, it could also explain the adhesive not bonding.