ᐅ Which primer and paint are suitable for gypsum plaster in new construction?

We applied a standard primer and then painted with Alpina white (the one with the cat). The paints were from Schöner Wohnen. It worked well.

I can’t find the primer anymore, but it was something from HAWO based on silicate. The paint is HAWO Silikat BioInterior Paint.

kirsel schrieb:
What do you think about the two theories mentioned in the first post? Which color type is suitable for gypsum plaster and which is not?

First of all, gypsum plaster is vapor-permeable (I was wrong earlier). Unfortunately, you cannot apply the typical highly vapor-permeable paints directly onto gypsum plaster (such as silicate dispersion paints, silicate paint, lime paint). I cannot comment on possible primers; the paint manufacturer should be able to provide guidance.

Dispersion paint (the standard interior paint sold in hardware stores) can be applied on almost all substrates. Their vapor permeability varies from low to good, depending on the product. They are available solvent-free, low-emission, and also emission-free. There is also natural resin dispersion paint (which is well vapor-permeable). This might be the best option for you.

If you don’t mind using wallpaper (woodchip or non-woven wallpaper, although not all are suitable because many are coated with plastic), then you could apply silicate dispersion paints directly. Woodchip wallpaper is vapor-permeable; for non-woven wallpaper, it depends on whether it is coated or not.

Alternatively, you would need to apply a mineral-based plaster, onto which you can paint the silicate paint directly.

(I also care about indoor air quality, but I wonder if plaster and paint really matter when a controlled ventilation system is present; pollutant emissions aside, of course, which should obviously be avoided).