UHF new screed drying time

[renishawphil]

Hi everyone

Sorry reposted as posted in wrong section originally.

A friend has had a floor screeded over a wet UFH system. It is a sand/cement one.

The screeder said leave it of until the weekend but I've seen a month or so ?
I would have thought the warmth from it could crack it that soon?

So what is the ideal time that it should be left without the pipes turned on ?

The screed is 50mm

 

[KenGMac]

renishawphil, good evening.

Historically it is / was considered that 20.mm / month was a "drying time"

As for your friend, suggest leave the heating Off for as long as poss. then introduce heat as slowly as poss. lowest possible setting on the stat and only for short periods.

Ken