BAUerMartin24 May 2017 21:21Hello everyone,
Unfortunately, I keep hearing different opinions about ventilating after the screed has been laid.
Maybe someone here can help me out.
Our screed has been curing for 8 weeks as of Friday. On the ground floor, we used anhydrite screed to avoid movement joints in the large living and dining area.
The heating program for the screed from our air-source heat pump was gradually increased to 55°C (131°F) after 28 days. During this time, we ventilated regularly.
Yesterday, our tiler measured the moisture level on the ground floor and found 5% residual moisture. Is that possible? Is that realistic? We would now have to turn the heating back on for a week?
We suspect he might just be trying to delay us?!
Unfortunately, I keep hearing different opinions about ventilating after the screed has been laid.
Maybe someone here can help me out.
Our screed has been curing for 8 weeks as of Friday. On the ground floor, we used anhydrite screed to avoid movement joints in the large living and dining area.
The heating program for the screed from our air-source heat pump was gradually increased to 55°C (131°F) after 28 days. During this time, we ventilated regularly.
Yesterday, our tiler measured the moisture level on the ground floor and found 5% residual moisture. Is that possible? Is that realistic? We would now have to turn the heating back on for a week?
We suspect he might just be trying to delay us?!
Hello "BAUer Martin".
A 5% residual moisture content in a calcium sulfate screed is simply impossible!
I fear (not without reason) that the measurement method used to obtain such an unrealistically high result must be questioned.
With a heated screed, we will definitely have a residual moisture level where the screed is already solid. At 5%, honestly, you could scrape a calcium sulfate screed out of the building with a plastic spoon.
How did the person measure it, what method was used, where was the sample taken from, how much sample material was used, and at what pressure did the gauge on the pressure bottle stabilize?
-------------------------
Regards, KlaRa
A 5% residual moisture content in a calcium sulfate screed is simply impossible!
I fear (not without reason) that the measurement method used to obtain such an unrealistically high result must be questioned.
With a heated screed, we will definitely have a residual moisture level where the screed is already solid. At 5%, honestly, you could scrape a calcium sulfate screed out of the building with a plastic spoon.
How did the person measure it, what method was used, where was the sample taken from, how much sample material was used, and at what pressure did the gauge on the pressure bottle stabilize?
-------------------------
Regards, KlaRa
BAUerMartin6 Aug 2017 22:24Brief feedback:
The house is now finished, and we moved in on 01.07. We did not part on good terms with the tiler, even though they were acquaintances (everything official!) with a contract, etc.
In the end, the floor was probably dry, but we were repeatedly delayed afterwards.
The house is now finished, and we moved in on 01.07. We did not part on good terms with the tiler, even though they were acquaintances (everything official!) with a contract, etc.
In the end, the floor was probably dry, but we were repeatedly delayed afterwards.
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