Hello everyone,
can you help us? About six weeks ago, we had the flowing screed installed in the house. We have been ventilating as often as possible since day one, and about two weeks ago we also started running the underfloor heating as part of the drying process. Today, my husband noticed some light mold spots above the windows in the attic.
The architect is downplaying it and says it’s only superficial. We shouldn’t worry. By now, the area looks visibly dry. We were told to just remove the mold from the surface and that would be enough. We are a bit skeptical when it comes to mold inside the house. What do you think? Where does the mold come from? What is the best way to remove it? Should we be concerned? Should we maybe remove and re-plaster the affected areas? Would that be effective? So many questions... We would really appreciate your opinions and experiences.
Greetings from PB
can you help us? About six weeks ago, we had the flowing screed installed in the house. We have been ventilating as often as possible since day one, and about two weeks ago we also started running the underfloor heating as part of the drying process. Today, my husband noticed some light mold spots above the windows in the attic.
The architect is downplaying it and says it’s only superficial. We shouldn’t worry. By now, the area looks visibly dry. We were told to just remove the mold from the surface and that would be enough. We are a bit skeptical when it comes to mold inside the house. What do you think? Where does the mold come from? What is the best way to remove it? Should we be concerned? Should we maybe remove and re-plaster the affected areas? Would that be effective? So many questions... We would really appreciate your opinions and experiences.
Greetings from PB
I
italiano8326 Dec 2014 18:40Applying new filler would not help at all because filling the area again introduces new moisture to the spot. The filled area then contains moisture once more.
Where did you have this screed installed? Throughout the entire house?
Where did you have this screed installed? Throughout the entire house?
B
Bauexperte27 Dec 2014 09:40Hello,
According to your avatar, you have a brick veneer shell construction. My first question would be about the build-up: Was the inner wall fully completed before the veneer was added, or were both built simultaneously? And if they were built simultaneously—did moisture get into the insulation?
Secondly, what were/are the ventilation intervals, especially since the drying process started?
If I were you—and since you are complete novices—I wouldn’t rely solely on my architect’s statements; mold is never good, except in cheese. If your architect is professional, they will understand that you are seeking external opinions. Only an on-site inspection of the shell can reliably answer your questions here.
Best regards, Bauexperte
Kisska86 schrieb:And are you still ventilating?
... and about two weeks ago we also started running the underfloor heating as part of the drying process.
Kisska86 schrieb:Sorry, but no one can really judge this from a distance?!
[...] Where is the mold coming from? What is the best way to remove it? Should we be worried?
According to your avatar, you have a brick veneer shell construction. My first question would be about the build-up: Was the inner wall fully completed before the veneer was added, or were both built simultaneously? And if they were built simultaneously—did moisture get into the insulation?
Secondly, what were/are the ventilation intervals, especially since the drying process started?
If I were you—and since you are complete novices—I wouldn’t rely solely on my architect’s statements; mold is never good, except in cheese. If your architect is professional, they will understand that you are seeking external opinions. Only an on-site inspection of the shell can reliably answer your questions here.
Best regards, Bauexperte
Yes. Of course, we continue to ventilate at least twice daily. We have done this right from the start. However, this apparently was not sufficient.
It quickly became clear to us that no one can really say where the mold is coming from. A specialist has already been there. There is apparently no mold in the attic; everything is fine there. But in the basement, in our unpopular bike room, there actually is mold. At one spot, the floor slab became extremely wet and apparently was not dry enough towards the screed. Anyway, drying devices are now being used there and the situation is being monitored. If necessary, drying under the screed will have to be done afterwards. Well, there always seems to be something with a house build.
It quickly became clear to us that no one can really say where the mold is coming from. A specialist has already been there. There is apparently no mold in the attic; everything is fine there. But in the basement, in our unpopular bike room, there actually is mold. At one spot, the floor slab became extremely wet and apparently was not dry enough towards the screed. Anyway, drying devices are now being used there and the situation is being monitored. If necessary, drying under the screed will have to be done afterwards. Well, there always seems to be something with a house build.
S
schwarz.b24 Jan 2015 20:39Hi
Yes, this is normal. The most important thing at the beginning is that you set up a hygrometer.
In our rental apartment, we experience this every winter as soon as it gets damp and wet outside, despite heating and ventilation.
The areas where mold appears in your place are thermal bridges, so the mold is superficial. I have since treated these spots with anti-mold paint designed for building use, and there has been no further mold growth.
You should also consider getting a construction dryer (dehumidifier). I bought one myself for about 150 euros, and it worked great.
Yes, this is normal. The most important thing at the beginning is that you set up a hygrometer.
In our rental apartment, we experience this every winter as soon as it gets damp and wet outside, despite heating and ventilation.
The areas where mold appears in your place are thermal bridges, so the mold is superficial. I have since treated these spots with anti-mold paint designed for building use, and there has been no further mold growth.
You should also consider getting a construction dryer (dehumidifier). I bought one myself for about 150 euros, and it worked great.
Altbauprofi9 Mar 2015 22:07For an effective and lasting renovation of moisture damage, a precise preliminary investigation is necessary to identify the causes of moisture exposure and assess the condition of the building component. Consult a professional on site; everything else is rather counterproductive.
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