Hello! Im a total novice on home repairs but am smart and capable once I know the how and why’s! We had water damage to a skirting board that was later removed which ripped the paint from the wall and took the white top plasterboard layer off with it in areas, exposing the brown paper layer. I’ve read I need to scrape back any remaining loose paint, lightly sand the area, then use zinsser BIN primer sealer stain killer (shellac formula), lightly sand, then I can paint the wall colour back on. Can you tell me how this primer works in regards to paper layer and why can’t I use a filler over the paper, also, won’t there be a divet left behind if I don’t ‘fill’? Any advice would be greatly appreciated!
