Choose paints specifically made for bathrooms to help prevent problems.
Any harsh environment can take its toll on paint, and there probably is no harsher indoor environment than your bathroom. When your bathroom paint peels, seeing your hard work and money wasted and knowing that you will have to repaint the surface is disheartening .Knowing why your paint peeled in the first place can help you prevent it from happening again.
Poor Surface Preparation
Preparing the surface before painting is an important step in achieving a good, lasting paint job. If your bathroom had not been painted in a long time, there may have been spots where grease, grime, dirt, dust or debris built up over the years. When you paint over this debris, paint cannot properly adhere to the wall. To prevent this from happening next time you paint, clean your walls with a rag or nylon scrub brush and household cleaning detergent before you begin.
Types of House Paint
Two main types of house paints are available: oil and latex. If you apply one type of paint over the other, the result is usually peeling. Determine what kind of paint was used the last time the bathroom was painted before you put on a new coat. If you wish to switch from oil to latex paint, or from latex to oil, apply an oil-based primer on the old coat. Oil-based primers adhere to both oil and latex paint.
Moisture
Moisture is a common culprit in the bathroom. Painting over walls that are still slightly moist, with leaks, vapors and other reasons for water building, up can result in moisture blisters and, eventually, in peeling. Using a coat of primer/sealer, keeping your bathroom well ventilated and wiping away excess moisture can help prevent water from causing paint to peel.
Deglossing
A high sheen on a former paint job may prevent a new coat of paint from properly adhering. If your bathroom was built since 1978, you can lightly sand the walls to remove the glossy sheen and give the paint more of a "tooth" to accept a new coat. You can then proceed to prime and paint your bathroom. If your bathroom was built before 1978, you should consult a professional before sanding. Many paints before 1978 contained lead, and sanding can result in toxic lead dust being released into the air.
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