Hello,
Most of my apartment is covered with gypsum fiberboard. I will apply a vapor-permeable primer on top of that, followed by a vapor-permeable fine-texture plaster (lime-based), and finally, it will be painted.
I want the paint to be vapor-permeable as well, so does that mean I should use a lime-based paint?
The goal is for the gypsum fiberboard to be able to absorb some indoor moisture. I don’t want to create a vapor barrier.
Are standard paints the right choice here, like basic white, or do I need something different?
For example, I have read that anti-mold paint is basically just lime-based paint.
The color should be white or matte white.
What would you recommend?
If possible, I’d prefer a paint that only needs one coat. The fine-texture plaster is already nearly white enough to leave as is. I just want to apply a final coat.
Most of my apartment is covered with gypsum fiberboard. I will apply a vapor-permeable primer on top of that, followed by a vapor-permeable fine-texture plaster (lime-based), and finally, it will be painted.
I want the paint to be vapor-permeable as well, so does that mean I should use a lime-based paint?
The goal is for the gypsum fiberboard to be able to absorb some indoor moisture. I don’t want to create a vapor barrier.
Are standard paints the right choice here, like basic white, or do I need something different?
For example, I have read that anti-mold paint is basically just lime-based paint.
The color should be white or matte white.
What would you recommend?
If possible, I’d prefer a paint that only needs one coat. The fine-texture plaster is already nearly white enough to leave as is. I just want to apply a final coat.
F
fach1werk22 Sep 2016 08:07Lime, like all mineral materials (cement, mortar, sand, glass, stone, earth, and even silicate paint...), can undergo silification. You might be familiar with the terms silicic acid or water glass. This means that crystalline bonds form between the two layers, even when applied wet on wet; this is how frescoes were traditionally made. Nothing silifies on gypsum or cardboard, as these are not mineral-based. There, adhesion works because the surface is sticky.
Lime becomes whiter the older and more refined it is. It can be absolutely bright, pure white.
Historically, lime paints often chalked, but consumers no longer accept this today. Unless you insist on slaking the lime yourself and applying limewash, you won’t usually experience this. Yellowing is not inevitable; it depends on other ingredients.
For example, if you choose lime paint from Auro, its application is very similar to paints you’re already familiar with. This paint is ready-mixed in a container. As a purist, you could also use the powdered lime paint from Kreidezeit, which is a creamy color—meaning the lime would still be quite young by traditional Greek standards. I have been told by Greeks that in their region there is a tradition where a father creates a lime pit when a daughter is born, so that by the time of her wedding the lime will have matured into a very fine building material to be included in her dowry.
Lime is caustic! Always wear safety goggles and long gloves. I once neglected this. After finishing work and cleaning, tiny drops of blood appeared on my palms, similar to sweat. The next morning, my skin was like a lacquer and barely movable. That was a layer of white blood cells. Not good—I had a baby to change diapers for.
Despite this, lime is fantastic, and I use it to paint all wet rooms.
Gabriele
Lime becomes whiter the older and more refined it is. It can be absolutely bright, pure white.
Historically, lime paints often chalked, but consumers no longer accept this today. Unless you insist on slaking the lime yourself and applying limewash, you won’t usually experience this. Yellowing is not inevitable; it depends on other ingredients.
For example, if you choose lime paint from Auro, its application is very similar to paints you’re already familiar with. This paint is ready-mixed in a container. As a purist, you could also use the powdered lime paint from Kreidezeit, which is a creamy color—meaning the lime would still be quite young by traditional Greek standards. I have been told by Greeks that in their region there is a tradition where a father creates a lime pit when a daughter is born, so that by the time of her wedding the lime will have matured into a very fine building material to be included in her dowry.
Lime is caustic! Always wear safety goggles and long gloves. I once neglected this. After finishing work and cleaning, tiny drops of blood appeared on my palms, similar to sweat. The next morning, my skin was like a lacquer and barely movable. That was a layer of white blood cells. Not good—I had a baby to change diapers for.
Despite this, lime is fantastic, and I use it to paint all wet rooms.
Gabriele
F
fach1werk2 Oct 2016 09:18My hydraulic lime from Kreidezeit has arrived, already pre-mixed and ready to use. So, there’s nothing else to do with it. Only the wall paint for the other rooms came in a bag. I will start on Monday with the primer on the drywall panels of the ceiling structure.
Gabriele
Gabriele
R
Reini123415 Oct 2019 14:18@Adieu
@garfunkel
Do I understand correctly that you applied lime-cement plaster on drywall? Which primer did you use? I’m currently desperately looking for the right product.
@garfunkel
Do I understand correctly that you applied lime-cement plaster on drywall? Which primer did you use? I’m currently desperately looking for the right product.
G
garfunkel15 Oct 2019 16:31Fermacell primer because I installed Fermacell panels
R
Reini123415 Oct 2019 22:07Is this about Fermacell Tiefengrund? Unfortunately, I couldn’t find any information about the SD value. Normally, products like this act as a vapor barrier for the wall, right?
G
garfunkel16 Oct 2019 16:37If I remember correctly, this is a primer, and yes, it tends to seal rather than open up.