Hi, excuse me for asking this question, but I've read all the threads I could find but haven't gotten much wiser, more confused perhaps 
I've just sanded down most of the walls (outer walls) which are made of lightweight concrete, now I wonder which filler to use before painting or wallpapering the walls? There is a layer of wallpaper left on the walls. Is it okay to use sand filler (can you use sand filler at all on lightweight concrete, whether it has wallpaper or not)? Should one use plastic-bound filler (like Beckers breplasta LH?) Or should one use plaster?
Or is it something completely different that should be used?
To repair damage (larger model), can Finja 360 be used? Are there any other alternatives?
Thanks!
I've just sanded down most of the walls (outer walls) which are made of lightweight concrete, now I wonder which filler to use before painting or wallpapering the walls? There is a layer of wallpaper left on the walls. Is it okay to use sand filler (can you use sand filler at all on lightweight concrete, whether it has wallpaper or not)? Should one use plastic-bound filler (like Beckers breplasta LH?) Or should one use plaster?
Or is it something completely different that should be used?
To repair damage (larger model), can Finja 360 be used? Are there any other alternatives?
Thanks!
I've just sanded down the walls in my bathroom "lightweight concrete" and skim-coated with maxit Väggspackel 0-100, excellent to work with. Fills up to 100 mm if you need to repair larger holes. The downside is that it's quite expensive.
But if it's a regular room "not a bathroom to be tiled," then use regular sand filler. That's what I have in all lightweight concrete walls.
But if it's a regular room "not a bathroom to be tiled," then use regular sand filler. That's what I have in all lightweight concrete walls.