O
On one
Judging by how easily the tile adhesive is coming up off the floor,there was no or little priming
Discuss Tiles coming up, cracks, and hollow points in the Canada area at TilersForums. The USA and UK Tiling Forum (Also now Aus, Canada, ROI, and more)
Solid bed is near if not 100% coverage of adhesive between tile and substrate. It needs to be of a sufficient depth depending on tile and state of substrate. In your case you would want a 20mm x 10. Round notched trowel with a back skin to the time to ensure 100%
I would add though, that picture number 2 appears to show a crust stuck to the ribs under the tiles.
Could this be a layer of laitence which is debonded from the main screed? You can get laitence on any screed, not just anhydrite.
The adhesive is made by Bostik and sold by Travis Perkins.
Although it claims to be flexible, perhaps it isn't flexible enough?
Even if the adhesive is wrong, the installation method is so rubbish, it would likely have failed anyway.
Should be...On the back of the adhesive it has C2F on it. Should that be good enough?
If you have issues with some. You may have issues with all. I would pick 5 tiles at random across the area and take the them up. If. They are as others then the whole lot of the same. Sorry
can I insist they redo the tiles or would these incorrectly laid tiles not be considered a defect until they actually crack?
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