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So my liquid anyhydrate screed was laid in December, the laitance was removed mechanically by a sanding machine with diamond cutter 5 days later. I'm on the verge of getting the floor tiled in the next week or so. I commissioned the ufh a few weeks ago. Now I'm getting cold feet thinking the laitance hasn't fully been removed. I've attached pics for all you pros to see and hopefully reassure me that everything is fine and I'm overthinking. The floor does need a good sweep and vac but my question is do I need to get the guy back to sand it again?? It cost me £200 to get it sanded in the first instance.