I am putting pre-pasted wallpaper on a ceiling. Can I use paste in addition to the pre-pasted wallpaper for extra adhesion?
Yes you can and should. I once spent an entire day putting up prepasted wallpaper on our stairway. Got up in the morning and it was laying on the stairs. I gave up washed the wall and painted it.
You can buy pre/pasted activator that will give you a stronger bond for this project. Because it is a ceiling, this would give you more of bonding control with one of the many brands of activators on the market.
I would not. Remove the old paste before you wallpaper
I don't think so, wallpaper never does well on ceilings, it draws dampness An will eventually start falling..
You could if you want. They sell pre-paste activator. You can consult your local hardware store or wall paper store on what product they would recommend.