My walls are in dark blue oil paint i want to paint it in a bright, light color water paint what should i do?

buy a primer that is for both oil and water base. sand the wall lightly wash the walls with TSP and water prime paint with water base paintMy walls are in dark blue oil paint i want to paint it in a bright, light color water paint what should i do?
Unless you just love to paint, and paint, and paint, use a sealer under-coat first. One name brand is Kilz, but there are others. Apply a good heavy coat of sealer and see how it looks after its dried. If it's not bright enough, (white), apply another coat. (Sometimes a 3rd coat may be required.) If you do this first, you may get away with just one coat of a lighter colored paint to get your desired result.


One little tip: if you're not using paint that you just bought that was put in their shaker, stir the paint very, very well before you start painting. You'll thank me later.My walls are in dark blue oil paint i want to paint it in a bright, light color water paint what should i do?
You MUST wash the walls in TSP first. Make sure to wear gloves because it is very caustic. Then prime with an oil based primer such as KILZ. Kilz comes in water base and oil base so make sure you get the correct one. If you do not follow these steps the water base paint will peel right off the wall. Have fun!
okay


first paint the whole room white


when it is dry then you can put your light color paint on the wall


it will look bad if you attempt to put light color on that dark blue


I promise the result will be good