ᐅ From what point is it no longer possible for a screed to cup?
Created on: 23 Sep 2016 11:03
A
andimann
Hello everyone,
Our screed (fiber-reinforced cement screed) has been installed for 4 weeks now, and since yesterday the heating is finally running and gradually warming up.
From when is there no longer a risk that the screed will crack during drying? After 4 weeks it is considered cured. Can we now use dehumidifiers to support the drying process?
Background:
We have two basement rooms without windows (they will later be ventilated via controlled residential ventilation, which is not running yet). Naturally, drying through ventilation is difficult there (currently constantly 90% humidity), and I would like to assist the process a bit.
Our site manager is constantly holding me back and would prefer to leave the screed for at least 12 weeks...
Thanks and best regards,
Andreas
Our screed (fiber-reinforced cement screed) has been installed for 4 weeks now, and since yesterday the heating is finally running and gradually warming up.
From when is there no longer a risk that the screed will crack during drying? After 4 weeks it is considered cured. Can we now use dehumidifiers to support the drying process?
Background:
We have two basement rooms without windows (they will later be ventilated via controlled residential ventilation, which is not running yet). Naturally, drying through ventilation is difficult there (currently constantly 90% humidity), and I would like to assist the process a bit.
Our site manager is constantly holding me back and would prefer to leave the screed for at least 12 weeks...
Thanks and best regards,
Andreas
Hi KlaRa,
thanks for the tip! I had quietly thought something along the lines of “too fast isn’t good either” myself.
The other dryers won’t be used in the basement either, but one on the ground floor and one on the upper floor, and only if the weather changes. We’ve had completely dry weather here for four weeks (4 weeks) now, but that will surely change again. And when it gets humid outside, I’ll turn on the dryers inside.
Is there a rule of thumb for the ideal humidity level to aim for when drying screed, and a minimum level that shouldn’t be fallen below? Like not below 60%, or not below 40%?
Best regards,
Andreas
thanks for the tip! I had quietly thought something along the lines of “too fast isn’t good either” myself.
The other dryers won’t be used in the basement either, but one on the ground floor and one on the upper floor, and only if the weather changes. We’ve had completely dry weather here for four weeks (4 weeks) now, but that will surely change again. And when it gets humid outside, I’ll turn on the dryers inside.
Is there a rule of thumb for the ideal humidity level to aim for when drying screed, and a minimum level that shouldn’t be fallen below? Like not below 60%, or not below 40%?
Best regards,
Andreas
Hi,
just a quick update. Since last week, the drying cycle for our heating system has finished. I kept the construction dryers running a bit longer, but since last Friday, hardly any moisture has been coming out. The indoor humidity level has stabilized at around 35-50% with the heating running lightly (about 22°C (72°F) inside).
Today, the tilers took their measurements. I don’t have the exact results yet, but it must have been at or below 2% because they’ve already started installing the tiles!
So it worked out well!
Best regards,
Andreas
just a quick update. Since last week, the drying cycle for our heating system has finished. I kept the construction dryers running a bit longer, but since last Friday, hardly any moisture has been coming out. The indoor humidity level has stabilized at around 35-50% with the heating running lightly (about 22°C (72°F) inside).
Today, the tilers took their measurements. I don’t have the exact results yet, but it must have been at or below 2% because they’ve already started installing the tiles!
So it worked out well!
Best regards,
Andreas
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