We are in the process of renovating our house, which was built ~33, and in the upstairs bedroom, we have revealed the chimney breast that runs in the middle of one of the walls. It is about 160 cm wide and was previously plastered and wallpapered to match the wall sections on the sides. This plastered part is intended to become an extension of the headboard.
When we tore away all the layers of wallpaper and debris, it became apparent that there was extremely hard plaster, and to remove the last remnants of glue and wallpaper, I ended up using a diamond sander to get down to the plaster! I tried everything I could think of before testing the sander, but it was the only thing that worked! So there's no visible brick, just a relatively smooth, hard plastered surface today with some minor cracks, but nothing hollow behind as far as we can tell.
We now need to plaster this wall a bit, as it's not quite aligned with the walls on the sides. On one side, the wall is almost flush with the new gypsum, and on the other side, it slightly juts out from the gypsum. Therefore, I want to plaster it by <1cm to achieve a smooth plastered wall that slightly protrudes compared to the walls to be wallpapered on the sides. The idea is to achieve a brushed, somewhat coarse texture on the entire chimney breast.
So, to the questions!
Which plaster should be used? C-bruk? Since the surface is so hard, it feels like there shouldn't be any problem? What might I have missed that could cause issues?
And once the plastering is done, which white paint should be used? Is Silicate paint the way to go?
Best regards,
Christopher
When we tore away all the layers of wallpaper and debris, it became apparent that there was extremely hard plaster, and to remove the last remnants of glue and wallpaper, I ended up using a diamond sander to get down to the plaster! I tried everything I could think of before testing the sander, but it was the only thing that worked! So there's no visible brick, just a relatively smooth, hard plastered surface today with some minor cracks, but nothing hollow behind as far as we can tell.
We now need to plaster this wall a bit, as it's not quite aligned with the walls on the sides. On one side, the wall is almost flush with the new gypsum, and on the other side, it slightly juts out from the gypsum. Therefore, I want to plaster it by <1cm to achieve a smooth plastered wall that slightly protrudes compared to the walls to be wallpapered on the sides. The idea is to achieve a brushed, somewhat coarse texture on the entire chimney breast.
So, to the questions!
Which plaster should be used? C-bruk? Since the surface is so hard, it feels like there shouldn't be any problem? What might I have missed that could cause issues?
And once the plastering is done, which white paint should be used? Is Silicate paint the way to go?
Best regards,
Christopher
It can be difficult to apply so little. I would have first applied tile adhesive with a notched trowel. Silicate paint works well, but regular indoor wall paint works fine too. I have used silicate paint and then diluted an extra round with additional water and applied it to get variations in color.
I don't have an exact plan for how much should be applied really, but somewhere around 1-2.5 cm maybe, it depends of course on what will be easiest! 
The idea is to put up ribs on each side and level the plaster with that, to get as even a result as possible.
The idea is to put up ribs on each side and level the plaster with that, to get as even a result as possible.