I removed a large wallpaper mural from drywall in a house we purchased. The previous owner didn't put a release compound or protective sealer on before gluing the wallpaper on. When I pulled it off, it took almost all the white compound coating on the drywall with it. Easily 90% of the drywall is exposed brown paper. I know I can't paint this until it is either sealed or I put a skim coat of joint compound on it first. My question is is it worth it to reapply joint compound to 90% of a 12 x 8 wall or should I just tear out the drywall and install new stuff?
As long as some of the drywall paper is still there, the drywall is still intact enough and it's safe to skim coat it. Either approach will work. Only you can answer the question of which one is "worth it." Among the factors:
- Which of the jobs you can do yourself
- Which of the jobs you enjoy more/hate less
- The relative money costs of the two jobs, whether you do them yourself or decide to hire them out
- The relative time costs of the two jobs
- The amount of mess and inconvenience of the two jobs
- Whether or not there's anything behind that drywall you wanted to expose/replace anyway
With most of the paper gone so is the strength of the sheetrock. For that reason I would replace it. Only 3 sheets and you have a new wall to work with. plus getting a look inside the walls, any new outlets needed in the area great time to add them with the old stuff out.