No usually need prep walls first may need new plaster or just easy fill then mist coat or primer-sealer all depends.
If is new plaster mist coat is good enough.
The most important thing is to make sure you clean the walls down well to remove all the old paste residue. Prep, PVA and paint.
You would need to wash walls with sugar soap, I would always apply a coat of zinsser primer as the old paste reacts with the paint and can dis colour and crack.
Peeling and scraping off layers of old wallpaper can leave the walls beneath covered in adhesive. Worse, it can leave them pitted and scarred from your attempts to remove every last shred of paper. Before you can paint over these wounded surfaces, you must return them to perfect smoothness.
It's alot of preparation to guarantee a perfect finish due to the condition of the plaster. For best results sand wall and line with medium grade lining paper fitted horizontally leaving a 2mm joint gap, when the papers dried fill 2mm joints with a good filler allow to dry lightly sand then emulsion. It will look like a newly plastered wall.
Yes, if you wash walls down properly.
Yes you can but first you have the walls for any holes....if is ...fill(sanding off)...touch up and full coat...Best paint Dulux...good luck
Yes should be no reason why you can't as long you have gone back to a skimmed surface
Yes, providing that all the paper is off, and the wall has been cleaned of paste residue, dry and light sand. Smooth surface for best finish
you can wouldnt recommend it always recommend that once you take the paper of i would put lining paper up then paint otherwise u would have marks showing through and dont look as good
I would let it dry out first and then send the wall down to smooth it out and then go ahead
You wouldn't be able to paint the walls straight away after the removal of wallpaper because, the walls will still contain the wallpaper adhesive and will cause your paint to react in a negative way.
Your walls will have to be sealed with a primer based product prior to painting.