Painting over poster on the wall

[DIYoinks]

The previous occupant of our bedroom stuck a big map of the world to the wall in a hideous beige colour that I want to paint over/get rid of.
It’s poster-like material and is kind of glossy, so I’m guessing too ‘slippery’ to just put paint over top. You’d also still see the edges of the poster I reckon.
The wall it’s attached to is made from Gyproc, so steaming it off is probably not the best idea? Or would that not be a problem because they put plaster over top? Does anyone have any tips? Thanks in advance!

 

[KenGMac]

Steaming may assist in getting the glue, what ever type it was to soften and allow you to get a scraper under? Try a boiling kettle spout to start with?

Another option??

Obliterate the image with one of the stain blockers? if it will take paint, if not a light sand paper over the entire image to assist with the paint adhering?

If it will not come off, and the re-paint only works partially, suggest a layer of thick lining paper then paint again with emulsion of choise preferably not white?

Ken.

 

[He who knows]

Even if the paint sticks perfecly you'll still see the outline.

Almost certainly ditto even if you put lining paper up.

Remove it - it's unlikely that you'd need to use so much water or steam that you'd wreck the wall, as long as you're careful with the scraper.