Hello everyone,
I have a question for the building experts regarding interior plaster. Unfortunately, we have not yet found a well-founded opinion on this.
In our preliminary building specification (contract not yet signed), it states that the interior walls are to be finished with gypsum plaster.
When our building plans became more concrete, I also got some literature. From the book "(K)ein Pfusch am Bau: Wie ein Bausachverständiger (s)ein Haus richtig und dennoch kostengünstig bauen würde“ by Günther Nussbaum-Sekora (which I find really good as a layperson), the following quote:
[ I]Due to my inquiry (note: building surveyor), the building quality could already be improved before the first ground-breaking.[/I]
[ I]According to the building specification “interior plaster machine application”[/I]
[ I]What was meant was the cheaper and moisture-sensitive gypsum plaster. It was upgraded at no extra cost to lime plaster. The high pH value of lime (>12) prevents microbial growth.[/I]
End of quote
In addition, we will be building with Ytong blocks and installing a ventilation system.
So now my question to you is:
Does anyone have experience with this?
Are there other aspects besides microbial growth that would speak for or against lime plaster? (e.g. problematic texture, more difficult application or finishing, paintability, wallpapering issues, moisture sensitivity, or similar)
(where I understand the purpose of lime plaster is to absorb moisture better)
If you support using lime plaster, would you use it throughout the entire living area as interior plaster or only in wet areas (bathroom, kitchen, utility room)?
If my assumption is correct that lime plaster absorbs moisture better – does this still make sense if a ventilation system is installed that already removes room humidity?
Thank you very much for your answers
f-pNo
I have a question for the building experts regarding interior plaster. Unfortunately, we have not yet found a well-founded opinion on this.
In our preliminary building specification (contract not yet signed), it states that the interior walls are to be finished with gypsum plaster.
When our building plans became more concrete, I also got some literature. From the book "(K)ein Pfusch am Bau: Wie ein Bausachverständiger (s)ein Haus richtig und dennoch kostengünstig bauen würde“ by Günther Nussbaum-Sekora (which I find really good as a layperson), the following quote:
[ I]Due to my inquiry (note: building surveyor), the building quality could already be improved before the first ground-breaking.[/I]
[ I]According to the building specification “interior plaster machine application”[/I]
[ I]What was meant was the cheaper and moisture-sensitive gypsum plaster. It was upgraded at no extra cost to lime plaster. The high pH value of lime (>12) prevents microbial growth.[/I]
End of quote
In addition, we will be building with Ytong blocks and installing a ventilation system.
So now my question to you is:
Does anyone have experience with this?
Are there other aspects besides microbial growth that would speak for or against lime plaster? (e.g. problematic texture, more difficult application or finishing, paintability, wallpapering issues, moisture sensitivity, or similar)
(where I understand the purpose of lime plaster is to absorb moisture better)
If you support using lime plaster, would you use it throughout the entire living area as interior plaster or only in wet areas (bathroom, kitchen, utility room)?
If my assumption is correct that lime plaster absorbs moisture better – does this still make sense if a ventilation system is installed that already removes room humidity?
Thank you very much for your answers
f-pNo
S
Sebastian7923 Nov 2015 10:48Oh, I need to revise my opinion here – we now have lime cement everywhere, which surprisingly looks very good – but, of course, it is rougher than gypsum.
In some areas, it is still being finely skim-coated, in others wallpapered, and in some left as is.
However, it is completely a matter of personal taste – I also thought before that I would never want this.
In some areas, it is still being finely skim-coated, in others wallpapered, and in some left as is.
However, it is completely a matter of personal taste – I also thought before that I would never want this.
S
Sebastian7923 Nov 2015 11:09Because we are doing it ourselves and still have good knowledge of the application here.
Ultimately, it is a more durable, vapor-permeable plaster – though the latter should not be overemphasized.
Ultimately, it is a more durable, vapor-permeable plaster – though the latter should not be overemphasized.
S
Sebastian7923 Nov 2015 14:57I’ve changed my mind – but I wouldn’t demonize or praise either option. I’m also fine with saying that openly. Of course, the cost factor played a significant role (even though cement fiber boards are generally more expensive).
After all, I’m installing drywall on the upper floor as ceiling cladding, not cement fiber boards.
Basically, gypsum is “dead” material and has only one major advantage: it comes from the factory relatively smooth and can be made even smoother quite easily. However, the downside is that any imperfections become even more visible.
After all, I’m installing drywall on the upper floor as ceiling cladding, not cement fiber boards.
Basically, gypsum is “dead” material and has only one major advantage: it comes from the factory relatively smooth and can be made even smoother quite easily. However, the downside is that any imperfections become even more visible.