ᐅ Underfloor Heating Program Too Hot. Damage to Screed - Any Experts?
Created on: 19 Dec 2019 20:33
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StrobelHello,
21 days ago, we had our cement screed installed, and this morning the heating technician came to start up the heating system. In advance, he received a heating protocol from the screed installer, specifying the required flow temperatures (Days 1-3: 20°C (68°F), Day 4: 25°C (77°F), and so on up to a maximum of 45°C (113°F)). This afternoon when I came home from work, I was shocked... The house was very warm, and the heating system showed a flow temperature of 37°C (99°F). Additionally, the screed started to develop blistering in several spots. I immediately turned off the heating and called the technician. Unfortunately, it was not the same person as in the morning, and he couldn’t understand why it was set incorrectly. He just adjusted it again and lowered the maximum value from 40°C (104°F) to 20°C (68°F).
I couldn’t see any major damage in the dark. The heating had been running for about 6-7 hours with the wrong settings. Could there be further damage? What can I do to protect myself in case of consequential damage? Thanks!
21 days ago, we had our cement screed installed, and this morning the heating technician came to start up the heating system. In advance, he received a heating protocol from the screed installer, specifying the required flow temperatures (Days 1-3: 20°C (68°F), Day 4: 25°C (77°F), and so on up to a maximum of 45°C (113°F)). This afternoon when I came home from work, I was shocked... The house was very warm, and the heating system showed a flow temperature of 37°C (99°F). Additionally, the screed started to develop blistering in several spots. I immediately turned off the heating and called the technician. Unfortunately, it was not the same person as in the morning, and he couldn’t understand why it was set incorrectly. He just adjusted it again and lowered the maximum value from 40°C (104°F) to 20°C (68°F).
I couldn’t see any major damage in the dark. The heating had been running for about 6-7 hours with the wrong settings. Could there be further damage? What can I do to protect myself in case of consequential damage? Thanks!
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pffreestyler20 Dec 2019 07:53Are you sure this is caused by the heating and wasn’t already there before? I would have expected at most some cracks by now.
In our case, the screed was heated continuously at 35°C (95°F) flow temperature for three weeks, and it stayed perfectly smooth like a baby’s bottom...
In our case, the screed was heated continuously at 35°C (95°F) flow temperature for three weeks, and it stayed perfectly smooth like a baby’s bottom...
Where do you see a problem now? What is supposed to happen? Probably Googled too much. You didn’t really expect the cement screed to be as smooth as a baby’s bottom before or after heating, did you?
I would have rather avoided installing the cement screed during the freezing temperatures of the last three weeks.
@pffreestyler Cement or anhydrite?
I would have rather avoided installing the cement screed during the freezing temperatures of the last three weeks.
@pffreestyler Cement or anhydrite?
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pffreestyler20 Dec 2019 08:19Cement. However, it had already been applied 4 weeks (instead of the usual 3 weeks) earlier. We weren’t under any time pressure, so we didn’t put too much pressure on the companies regarding the schedule. That’s why the total construction time was just under 11 months.
And yes, apart from one spot, it was actually as smooth as a baby’s bottom.
And yes, apart from one spot, it was actually as smooth as a baby’s bottom.
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