What's the best way of getting peeling paint off a wall?

I bought my house last year and I think they did a quickie paint job in the bathroom. The paint is flaking off the wall and making a mess. I think they didn't prime it and it's semi-gloss paint. What should I do to fix it? Can I simply prime over it or do I need to strip the paint off completely?What's the best way of getting peeling paint off a wall?
[Wish you had said what your walls are made of.]





Sheetrock? Plaster? Wood?


If sheetrock, just take care not to add any mars or scrapes/dings when you remove any/all the flaking paint. Yes, the best thing, regardless of substrate, is to get as much off as you can.





If it's a new house, it's a good bet the paint job was done the quickie way rather than the right-priming way. If a new house, it's also a safe bet to say it's latex paint.





If it's not been long since it was painted, and is now peeling, it was not done the right way.





It's truly hard to say whether you need to strip off all the existing/flaking coat of paint or not. You may be alright to scrape off everything that's [half-way] loose, then put on a quality primer. If not scraping off all the existing/flaking paint, it may help to level the edges [where scraped/not scraped] with joint compound, or other material ~ but here, again, I don't know what wall material we're talking about.





[Prep work is {at least} 80% of the job.]





Do NoT use FlaT paint as your topcoat. And don't buy cheap paint.What's the best way of getting peeling paint off a wall?
100 grit sand paper,works well.
I am a painting contractor and lazi has it corredt