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How to Tell What Kind of Paint Is on the Wall

Knowing what kind of paint you have before you start a painting project is essential. Fortunately, it's easy to tell whether a wall has been painted with latex or oil paint with the help of a cotton ball and some rubbing alcohol. First, soak the cotton ball in rubbing alcohol and gently wipe it along your wall paint - if the paint comes off on the cotton ball, you've got latex paint on your walls.

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However, if no paint transfers onto the cotton ball, your walls are likely covered with oil paint. With this simple test, you can be sure you're using the correct type of paint to complement what's already been used.