How to patch uneven walls and prepare for re-painting?
Hello, I'm brand new to DIYing and home maintenance/reno, and may have made a huge mistake(s). 1. There is a wall that's quite bumpy. The intention is to sand it down and repaint. When scraping off old paint, I ended up taking out chunks of plaster, and exposing this grey/brown material at the back. Not sure if it's mould…
