We realized after 12 days that our installer had set the wrong drying program. It has been running constantly at 30 degrees Celsius (86°F) for 12 days. This is an electrically powered external device, not the heat pump.
The installer is coming tomorrow. What do you recommend? I will have the screed moisture measured today. However, my main concern is the expansion. If I increase the temperature from 30 to 40 degrees Celsius (86 to 104°F) tomorrow, then from Friday to Saturday to 50 degrees Celsius (122°F), and keep it there for two days until Monday, will that be sufficient?
We have already scheduled all subsequent work steps with all contractors after the drying program. It would be a disaster if we had to extend the program.
The installer is coming tomorrow. What do you recommend? I will have the screed moisture measured today. However, my main concern is the expansion. If I increase the temperature from 30 to 40 degrees Celsius (86 to 104°F) tomorrow, then from Friday to Saturday to 50 degrees Celsius (122°F), and keep it there for two days until Monday, will that be sufficient?
We have already scheduled all subsequent work steps with all contractors after the drying program. It would be a disaster if we had to extend the program.
Vicky Pedia3 May 2020 23:15@KlaRa Hats off to you for your calmness in explaining this over and over! I'll give it a try too!
The heating of the screed after installation is done following a specific program set by the heating system manufacturer. Usually, it takes 21 days (I know, there’s some debate about this). Typically, one week of heating up, one week of holding temperature, and one week of cooling down. This process ensures that the heating system works properly and is leak-free, and that the screed is free of stress; otherwise, it can crack or cup.
The screed is considered ready for covering—that means dry enough for tiling or other floor finishes—after using a construction dryer. Regular ventilation by briefly opening windows is always recommended.
The heating of the screed after installation is done following a specific program set by the heating system manufacturer. Usually, it takes 21 days (I know, there’s some debate about this). Typically, one week of heating up, one week of holding temperature, and one week of cooling down. This process ensures that the heating system works properly and is leak-free, and that the screed is free of stress; otherwise, it can crack or cup.
The screed is considered ready for covering—that means dry enough for tiling or other floor finishes—after using a construction dryer. Regular ventilation by briefly opening windows is always recommended.
Vicky Pedia3 May 2020 23:16rastlos schrieb:
I wiped off the condensation with towels. But as I said, eventually it all just became too much.
I would definitely make sure to seal the floor hatch properly.Every little thing that’s out... keep going!S
Stefan2.8425 Jun 2020 07:15Hello everyone,
I’d like to join in with a question.
Our liquid screed was poured exactly 3 weeks ago.
We are ventilating regularly. However, I have not noticed any signs of moisture anywhere (on windows or on the concrete ceiling). Absolutely nothing.
Is this normal? Heating will start next week. We were advised to sand the screed to improve drying. The screed installer said that has nothing to do with drying. Are there any experiences with this?
Thanks and best regards
Stefan2.84
I’d like to join in with a question.
Our liquid screed was poured exactly 3 weeks ago.
We are ventilating regularly. However, I have not noticed any signs of moisture anywhere (on windows or on the concrete ceiling). Absolutely nothing.
Is this normal? Heating will start next week. We were advised to sand the screed to improve drying. The screed installer said that has nothing to do with drying. Are there any experiences with this?
Thanks and best regards
Stefan2.84
How did you ventilate in the beginning? Did you keep everything closed for the first 3 days? In that case, everything must have been damp, right? What did/does the surface of the screed look like? Does it already appear very dry? If so, the surface might have sealed, preventing the underlying screed from drying out. Did the screed get exposed to drafts too early? Another question is how you have been ventilating so far.
S
Stefan2.8425 Jun 2020 07:53This is how it looked after 1.5 days. I ventilate twice a day for half an hour each time. But even when I entered for the first time after 1.5 days, there was hardly any moisture.
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