I am in the process of re-wallpapering the living room, and when I tore down the old wallpaper, the plaster came off in a spot where they plastered in conjunction with changing a window section to the balcony. Quite large pieces are missing in the lightweight concrete/bluish concrete behind, so I'm considering how to build it up again. I've looked at Finja Laga Vägg (http://www.finja.se/laga.12.produktlista), and it seems like it might work, in combination with primer. Does anyone have experience with this, or tips on other methods? My thought was to plaster/spackle up to the height of the rule on the right, and then put renovation gypsum on top (regular gypsum board is too thick for the edge against the "door frame").
Tried to take a picture, but it's not easy to see how it looks, especially when it's dark...
Tried to take a picture, but it's not easy to see how it looks, especially when it's dark...
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Of course, it works well with Laga Vägg or gypsum plaster http://byggsystem.knaufdanogips.se/xpdf/puts-paa-lattbetong.pdf
Apply gypsum plaster, it’s the easiest and holds well. First, moisten the area with a water spray (watering can) and apply some gypsum plaster to fill it out. Once it has dried, apply gypsum plaster to the back of the renovation plasterboard and press the board in place. Cover the entire plasterboard with gypsum plaster and if the surface is fairly even, a 4 mm comb is sufficient. No screws needed...