+Q:Does UFH in screed need to be heated up gradually?
A:Yes. This is in order to not shock the screed and cause cracks. Ideally the system is ramped up, starting at a low temperature and then raised by 0.5 or 1 degree a day, until optimum temperature is reached.
+Q:Should the pipe have a sleeve if it is running through/under a movement/expansion joint?
A: It is advised that if pipe is running in screed that will or may have a crack in it that it should be protected with a sleeve.
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