ᐅ Installing insulation beneath flooring in conditions of high humidity
Created on: 1 Nov 2019 20:08
W
Widmayer
Hello everyone,
We are currently installing the insulation beneath our underfloor heating system, using EPS. On top of that, the fastening panels will be laid. Around the edges, we will place perimeter insulation strips, followed by a flowing screed (anhydrite).
Right now, the weather is quite cold and damp, so the indoor humidity is relatively high (up to 90%) and we cannot ventilate, as it is just as humid outside.
My question is: when installing the fastening panels, or at the latest after the screed is poured, the system will be sealed at the bottom. At the same time, I am trapping the moist air (which is also between the EPS panels). By my logic, this would later create an ideal environment for mold growth.
Therefore, I wanted to clarify this now, while I still have the chance to do something before the underfloor heating is installed or the screed is applied.
So, I would appreciate if someone could help me with:
- Am I thinking about this incorrectly and it is actually not a problem?
- Or should I use a fan heater and a construction dryer now to control the issue promptly?
Thank you very much in advance!!!
We are currently installing the insulation beneath our underfloor heating system, using EPS. On top of that, the fastening panels will be laid. Around the edges, we will place perimeter insulation strips, followed by a flowing screed (anhydrite).
Right now, the weather is quite cold and damp, so the indoor humidity is relatively high (up to 90%) and we cannot ventilate, as it is just as humid outside.
My question is: when installing the fastening panels, or at the latest after the screed is poured, the system will be sealed at the bottom. At the same time, I am trapping the moist air (which is also between the EPS panels). By my logic, this would later create an ideal environment for mold growth.
Therefore, I wanted to clarify this now, while I still have the chance to do something before the underfloor heating is installed or the screed is applied.
So, I would appreciate if someone could help me with:
- Am I thinking about this incorrectly and it is actually not a problem?
- Or should I use a fan heater and a construction dryer now to control the issue promptly?
Thank you very much in advance!!!
P
pffreestyler4 Nov 2019 15:19No, why? The staple board will be something like a roofing membrane, where the overlaps are glued together.
Hello
The installation and sealing for liquid screed is somewhat more demanding regarding waterproofing to prevent screed from flowing into or beneath the insulation.
The use of a construction dryer for this is unnecessary. The minimal amount of moisture in the air around the insulation can certainly be neglected. There is also an air connection between the insulation edge and the room air.
Olli
The installation and sealing for liquid screed is somewhat more demanding regarding waterproofing to prevent screed from flowing into or beneath the insulation.
The use of a construction dryer for this is unnecessary. The minimal amount of moisture in the air around the insulation can certainly be neglected. There is also an air connection between the insulation edge and the room air.
Olli
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