Having wallpaper removed

Zinsser's Gardz is what I would use. Gardz locks down any residual wallpaper paste. Residual paste can play havoc with topcoats. Previous owner had painted over wallpaper paste (two story staircase and upper level hallway). Paint had crazed and was flaking off in spots. So I would never risk a paint job over wallpaper paste without using Gardz.

Gardz is a thin white (like skim milk) out of the can and dries clear. Not recommended to tint Gardz. I have used flat white paint that I had sitting around to help cover and then topcoating with the new preferred pricey stuff.

Yes.....do a couple full coats of Gardz!!! It DOES apply thinly.

OR- do a full coat of an OIL Primer, like Zinsser Coverstain.