Anhydrite screed - laying vinyl at 50-70 millimeters thickness?

Hi,

We had an anhydrite screed installed in a prefabricated house with timber frame construction on February 19th. Currently, it is the 7th week of drying!

A measurement yesterday showed 55 digits in one corner of the living room, sometimes less, but in some areas also 70 digits.

We have underfloor heating. The drying program has been running for 7 weeks. Average room temperature of 28 degrees and 15% humidity.

The screed was only ground down 2 weeks ago.

All appointments are firmly scheduled. The kitchen is coming next Wednesday and vinyl should be laid beforehand.

The screed is supposed to be primed first and then filled. After 2 days, the vinyl will be laid on top.

Is this still possible with these values? The floor layer said not much can happen since it is not completely sealed, and potential residual moisture can escape through the joints or expansion strips.

I mean, what could happen in the worst case?

Thanks in advance!

Nothing happens there. What big thing could possibly happen.... It just dries a bit through the joints and the omitted baseboards and that’s that.

Did he only measure with the digital device and did not perform a CM measurement? Normally, floor layers are always interested in adhering to the laying values and documenting them in a legally binding manner with the CM measurement. Ours only started laying when the values of the CM measurement were in order.

No, he doesn't have a CM measuring device.

My primary concern now was just what big issues could arise if there is still occasional residual moisture.

I know that the floor layers measure themselves and are responsible. But it can't be done any other way, otherwise important appointments would be postponed.

Depends on the vinyl. With full vinyl, I wouldn't worry. On HDF carrier or with cork layer, it could hold moisture too long and rot.

So the vinyl is as follows:



It has already been primed and filled:



As I said, I hope this wasn't a mistake.

And I just wanted to hear from you if there are already any experiences or such in this direction.

Thanks in advance for your opinions!!