Hello,
so far, I have painted the ceilings and walls with non-woven wallpaper in my new build myself and managed to get a streak-free finish using a high-quality silicate paint. Now I moved on to painting our 0.5mm (0.02 inch) lime-cement plaster. After the first coat, there were "clouds" and spots visible everywhere. I have now painted one wall a second time. It’s better but still slightly visible in raking light.
The professional said this is normal because the grains are distributed in different directions when the plaster is applied. However, when you look at other internal plasters, they are usually fully opaque.
What can I improve? Use a different roller (I am currently using one with a 12mm (0.5 inch) pile height)? Dilute the paint more? Prime the plaster beforehand with potassium water glass? Just live with it?
so far, I have painted the ceilings and walls with non-woven wallpaper in my new build myself and managed to get a streak-free finish using a high-quality silicate paint. Now I moved on to painting our 0.5mm (0.02 inch) lime-cement plaster. After the first coat, there were "clouds" and spots visible everywhere. I have now painted one wall a second time. It’s better but still slightly visible in raking light.
The professional said this is normal because the grains are distributed in different directions when the plaster is applied. However, when you look at other internal plasters, they are usually fully opaque.
What can I improve? Use a different roller (I am currently using one with a 12mm (0.5 inch) pile height)? Dilute the paint more? Prime the plaster beforehand with potassium water glass? Just live with it?
R
Reini123417 Nov 2019 19:02What would that look like? Are the cloudy areas filled with filler and then roughened? I couldn’t quickly find anything about this on Google.
R
Reini123417 Nov 2019 20:23Ok, I am seriously stuck here. In my opinion, it doesn’t make sense to immediately cover newly applied plaster with filler, does it?
What is your goal? A smooth, even painted wall? In that case, you need to fully skim coat the cement-lime plaster! That's really how it is. The workflow is: skim coating, sanding, primer, then either wallpaper and paint or just paint.
Or do you want a rough wall texture? Then, of course, you paint the plaster directly, but even here you first apply primer, because plasters are absorbent, and the primer, as an acrylic, initially seals the pores.
Only the plaster texture you refer to as a cloud pattern will then be visible. You will have to live with that.
Or do you want a rough wall texture? Then, of course, you paint the plaster directly, but even here you first apply primer, because plasters are absorbent, and the primer, as an acrylic, initially seals the pores.
Only the plaster texture you refer to as a cloud pattern will then be visible. You will have to live with that.
R
Reini123417 Nov 2019 23:18I want to preserve the rough wall texture while achieving a fairly uniform color appearance. I also had to realize that the plaster absorbs paint very strongly. I cannot use acrylic because the wall construction is fully vapor-permeable. I think I will apply a second coat of paint and then leave it at that.
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