ᐅ Condensation in the screed around support columns and intermediate floors
Created on: 16 Dec 2010 19:48
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-Hello everyone, we were shocked to find moisture in the screed at two support columns as well as in the floor between the insulation (glass wool) and the wooden floor!
The screed itself, or the roof, is not insulated.
The ceiling of the upper floor, or the floor of the screed, is insulated as follows:
Thermal insulation with glass wool, insulation thickness 180mm (7 inches).
Wooden folding attic ladder as the access to the screed. Ceiling cladding with 13mm (0.5 inch) paneling.
In addition, we always have damp edges around the windows in all living rooms.
We are concerned that the screed floor, or the ceiling of the upper floor, might start developing mold and begin to rot. How can this issue be resolved?
Thank you very much for your help!
The screed itself, or the roof, is not insulated.
The ceiling of the upper floor, or the floor of the screed, is insulated as follows:
Thermal insulation with glass wool, insulation thickness 180mm (7 inches).
Wooden folding attic ladder as the access to the screed. Ceiling cladding with 13mm (0.5 inch) paneling.
In addition, we always have damp edges around the windows in all living rooms.
We are concerned that the screed floor, or the ceiling of the upper floor, might start developing mold and begin to rot. How can this issue be resolved?
Thank you very much for your help!
M
MODERATOR17 Dec 2010 10:10Hello Serla,
What is missing in the installation of the attic insulation is a vapor barrier; this prevents moisture and/or warm air from penetrating into the floor structure and condensing there – which unfortunately has happened in your case. You need to fix this; for the best way to do so—whether by removing the paneling, installing a vapor barrier, and then reinstalling the paneling, or if it can be done from the attic side—it's best to consult a professional who can assess the situation on site.
Regarding the windows: if the glass panes are wet at the edges near the window frame, this may be due to the edge seal (the connection between the two insulating glass panes). In your windows, this edge seal may be made of a material that conducts heat fairly well, probably aluminum. You will have to accept this, as it could only be changed by replacing the glass panes.
Finally, a question: do you ventilate regularly? This is important even during winter.
What is missing in the installation of the attic insulation is a vapor barrier; this prevents moisture and/or warm air from penetrating into the floor structure and condensing there – which unfortunately has happened in your case. You need to fix this; for the best way to do so—whether by removing the paneling, installing a vapor barrier, and then reinstalling the paneling, or if it can be done from the attic side—it's best to consult a professional who can assess the situation on site.
Regarding the windows: if the glass panes are wet at the edges near the window frame, this may be due to the edge seal (the connection between the two insulating glass panes). In your windows, this edge seal may be made of a material that conducts heat fairly well, probably aluminum. You will have to accept this, as it could only be changed by replacing the glass panes.
Finally, a question: do you ventilate regularly? This is important even during winter.
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