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Staining or sealing a cedar deck or fence is highly recommended to extend its lifespan and protect it from the elements. While cedar is naturally resistant to mold and mildew, it is not impervious to damage from moisture, sun exposure, splintering, fading, and rot over time. Applying a protective finish creates a shield that preserves the wood's strength and appearance, potentially extending its life by five to 10 years.

When choosing a finish, it's helpful to understand the difference between a sealer and a stain. A sealer sits on top of the wood, whereas a combination stain and sealer soaks into the top layer. Because it penetrates the wood, a stain generally offers better protection against UV damage and rot and lasts significantly longer. For the best results that also preserve the wood's natural color, consider using a near-translucent stain.

To maintain protection, plan on reapplying the stain or sealer every two to three years, either as a DIY project or by hiring a professional.

Regular cleaning, rust-proof coatings, and checking fasteners help prolong the lifespan.

Your tool of choice ultimately comes down to personal preference. Many DIYers prefer applying stain with a lint-free rag, but others stick with a paint brush or a roller. Wipe the stain and work it into the wood, working with and against the grain. If you’re applying multiple coats, allow the stain to dry for around four hours between coats.

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.