When trying to scrape off the original paint of my bathroom ceiling,I found some areas are quite hard to be scraped off by using the scrapper. I guess it is caused by the moisture or the previous painter applied flat paints straight onto bare gyprock without primer.
You can see on attached photo, the underneath brown paper is shown after I scrapped paint. Did anyone come across this situation? and is there any ways to scrape without damage the gyprock?