Slabs laid on concrete - Sandstone spec

[montman]

we have a spec for a job to lay sandstone slabs on a 50mm concrete screed, they all ready have a type one base on the site
i have never laid slabs directly on to a damp screed ? any advice ??

[local patios and driveway]

Is this a paid job? Are you sure you are the right man to do it?

Have a look on the pages of this site all the info is there to read

[London Stone Paving]

What type of sandstone flags are they? Sandstone is generally not laid on a screed. Even though most sandstone is now calibrated, the thickness is not reliable enough to go on a screed. It would help to know the exactly what the stone is
Steve

[mickavalon]

Are you sure that's just not bad wording, they probably mean on a 50mm bedding course, but their calling it screed because it's sharp sand/cement?