If your wall is white maybe consider white putty because sometimes it leaves marks if you keep it for too long like a year or so.
Hanging posters on concrete walls.
Clear the space where you want to hang up your posters.
How to hang posters on painted concrete walls method 1 of 3.
Put sticky tack on the corners of the poster for an affordable option.
Posters printed on hard plastic or similar materials will obviously not need to be prepped this way.
Press the adhesive side of the hook to the wall for 30 seconds.
This will make your posters easier to work with since the edges won t be curling back up as much.
Damage free adhesive picture hangers come in a range of styles and sizes.
Get hardwall hangers capable of resisting up to 25 pounds or 11 kg.
Take down any other posters.
Lay the poster or posters flat printed side up on a clean surface weigh them down at the corners for a few hours or a day.
Hold for 30 seconds and release.
They are designed to work well with concrete or brick walls and hanging pictures on them is easy and quick.
The best thing i found to hang about anything which isnt too heavy on a concrete wall is blu tack or any other type of sticky putty.