Uneven layers of plaster on the walls

[anderssoncatarina]

We have demolished two closets adjacent to our kitchen to create a bit more space in the kitchen. To our disappointment, we discovered afterward that the walls and ceilings inside what were previously closets have thinner layers of plaster. One section of the wall we have filled out with renovation plaster and will smooth the joint, so it will probably look nice. BUT the other wall, which a half-height kitchen cabinet will later stand against (must therefore even it out), we cannot solve in this way, since the kitchen wall is unevenly plastered. In the middle of the wall, it bulges out a bit more...

We intend to apply a broad layer of plaster to even it out, and then put up renovation wallpaper because we want smooth, fine walls to paint on. Before we start, it's good to know:

1. Is this a good idea at all?
2. What plaster is best to use for this? Does regular light hand plaster work? We will be plastering in stages, how thick a layer can we have in total?
3. The reason we are using renovation wallpaper afterward is to avoid getting cracks in the plaster that will annoy us later. Is it okay to put renovation wallpaper over plaster?
4. The plaster is painted with some persistent glossy paint that even the sander doesn't affect (it does bite on the plaster though). How do we get rid of this? We also need to sand down a bit to use as little plaster as possible...

The ceiling will get a broad layer of plaster, and you probably won't notice if there's any minor level difference remaining.

Overall, it's about a level difference of around 0.5 cm. So quite a bit. Hope you understand what I mean...

//With the risk of sounding stupid... someone who has never even wallpapered before:x

 

[Stefan N]

Use plaster, you can build it up without it sinking.

 

[anderssoncatarina]

Thanks for the tip, it worked great!