How long to allow screed to dry before LVT's

In an unheated room at present temps how long will a new sand /cement screed need to dry before LVT's can be laid?

 

Minimum of 6 months

 

What depth is it?

 

i screeded one with latex last week, went back 5 days later to fit vinyl and was still damp in patches, house was empty with no heating on

 

50mm deep sand/ cement

 

Rule of thumb is 1mm per day upto 50mm thick (in ideal conditions, i.e. heating on, stable humidity / enviroment).
This time of year, without any heating, it could be doubled.
Best bet is to do a moisture test with either a hygrometer box or insitu sleeves.

 

Or minimum of 4 weeks and dpm