painting after wallpaper removal
Help! We were attempting to update our bathroom by removing the old, peeling wallpaper. Our plan was to paint the walls a neutral color. The wallpaper peeled off quite easily without any chemicals or tools, but it appears that the adhesive or backing to the wallpaper is permanently stuck to the walls. We thought we were working with bare drywall, until we noticed a deep rose peeking through spots in the "drywall." With a razor blade, we scraped, and it now appears that most of the wall in the bathroom is covered with some residual backing from the wallpaper, and it is on to stay. Parts of the residue are peeled and cracking, and other parts are yellowed with age...but for the most part, the walls look like drywall, except for the spots where we've scraped, and the pink shows through. My question: Can we just use a high quality sealer, like Zinsser Gardz to prime the walls, without removing the stuck on backing...and then go on to paint. Or, do we have to remove all the residue, wash the walls, prime, then paint?? We are looking for absolute shortcuts here, as we are just wanting a quick-fix cosmetic update. We are novices, so any help is appreciated!