Porcelain tiles onto screed

[Waluigi]

How old are we talking here?

 

[Ajax123]

So...youve found a builder/groundworker who specialises in paving but you don't trust him... says everything to me... get a proper tiler in who knows what they are doing.

 

[Bond]

If he has the relevant knowledge and skill then what he is proposing could work, if you have any doubts, don’t go there.

 

[One Day]

If he has the relevant knowledge and skill then what he is proposing could work, if you have any doubts, don’t go there.

I've yet to meet any builders equipped with knowledge and skill surrounding tiling or stone fixing.
I'm not saying they don't exist but...🙂

 

[Just Rizzle]

nothing wrong with fixing in sand and cement, as long as you sbr slerry the area first mix sand and cement in a semi dry way and slurry back of tile in a 3 to 1 sbr mix also the semi dry screed .
if your worried try fixing just one tile and leave a few days and see if you can get it up