How To Tell If Paint Is Oil Or Latex. Rub the damp cotton ballpad or cotton swab over a small area on the surface. 2021 -- We had two products on the show that are no longer available but there are new.
It is called the Acetone test. If the paint starts to rub off and you see white or faded streaks you know this has been painted with a latex product. Start by washing a spot on the wall or trim with the warm water and soap.
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If you have a can of acetone simply soak a rag or cotton ball and rub an area where you think oil paint might be present. Look at the cotton swab to see if any paint was removed. This makes it difficult to tell the difference. It helps to know what type of paint is currently on the walls when it comes time to change the color scheme of a room.