Still don't get the problem ali, can not find,even with your explanation ,a problem occurring with a thicker/fibre screed .
But if its not to speck, and the builder has oked it, i wouldnt bother with getting involved.
I had a builder the other month, main contractor , he knew better than EVERY tradesman in the build, they are all tossers, leave them to it and don't worry about it.
Its nothing to do with you ali, you will do more damage to your rep 'grassing' than a floor which will most prob be fine for years
But if its not to speck, and the builder has oked it, i wouldnt bother with getting involved.
I had a builder the other month, main contractor , he knew better than EVERY tradesman in the build, they are all tossers, leave them to it and don't worry about it.
Its nothing to do with you ali, you will do more damage to your rep 'grassing' than a floor which will most prob be fine for years