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Discuss Would you consider this quality work? in the Canada Tile Advice area at TilersForums.com.
I think your screed was cured, but not dry. Was it moisture tested before tiling?
If there is any residual moisture left in the screed, this will be forced upwards and once it hits the porcelain tile it can't get out and can de bond the tile.
So you share it out - a bit to schluter, a bit to tilemaster, a bit to bal... Get everything recorded, keep emails, photos etc.Threads like this really drive it home how much responsibility and pressure is on our shoulders
Good shout, the man's an encyclopaedia of all things screed related.@Ajax123 - Alan Jackson might have some valuable insights into just how long these screeds can actually take to dry.
I must admit - even years later I'm still wary of them giving false readings which is why I always use Ditra as another line of defence, allowing that last bit of moisture and vapour to escape....
I'd recommend any new tilers read this thread for sure as it just shows how much can go wrong.
I'm amazed its gone wrong a second time - to have a bad tiling job was bad enough but to have them lifting now is just unbelievable.
Drying tims for screed we were told 2mm a day for x depth and 1mm for anything deeper. But we were well within those times for the depth we had especially as we forced dried it and used dehumidifiers.
Its also funny that last time the tiles stuck like glue in the only room without UFH - so I think its more likely down to the adhesive not getting on with the heat than the screed being damp.
I think that's the guide with gypsum tooThat would be 1mm a day and over 40mm 2mm a day but that would be a sand/cement screed.
Reply to Would you consider this quality work? in the Canada Tile Advice area at TilersForums.com