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Pressure-treated wood lasts at least 10 years, but with the right care and treatment, it can last as long as 40 years. Painting the boards is one way to increase the lifespan of pressure-treated wood. The layer of paint provides extra protection for the wood against the exterior elements and insects.

Select based on wood type, climate tolerance, and personal preference for color and finish, with choices like oil-based stains for longevity.

You can paint an old wooden fence, but make sure first to do a deep clean (ideally with a pressure washer) and inspect the fence for any existing damage. Painting over dirt and debris will cause your paint to peel. Once you’ve cleaned and repaired any minor issues, use a primer and high-quality satin paint.

There’s no single paint that’s the most waterproof. Instead, there are several types of waterproof and water-resistant paints that suit different purposes. Epoxy paint, for instance, is commonly used to provide a waterproof coating to floors and decks. Masonry paint is an excellent choice for exterior walls. Meanwhile, there are waterproof acrylic paints that can be used for interior and exterior walls. It’s more about choosing the best type for what you’re painting instead of the most waterproof paint overall.