That's an excellent question! Caring for your wooden park bench is key to its longevity and beauty. There's no single universal timeline, as the frequency depends heavily on your local climate, the type of wood, and the quality of the previous finish. However, a good general rule is to inspect your bench annually and consider restaining or resealing it every 1 to 3 years.
Think of the finish as the bench's protective shield. You should plan to reseal (with a clear sealant or tinted stain-sealer) more frequently—often every 1-2 years. A full restaining process, which may involve stripping the old finish, is typically needed every 2-3 years or when you notice significant wear.
The best indicator is the wood itself. Conduct a simple water test: sprinkle a few drops of water on the bench's surface. If the water beads up, the seal is still effective. If the water soaks into the wood and darkens it immediately, it's time for a new protective coat. Also, look for visual cues like fading color, a grayish weathered appearance, or wood that feels rough and dry to the touch.
For benches in harsh, sunny, or rainy climates, lean toward the more frequent end of the maintenance schedule. Using high-quality, UV-resistant products designed for outdoor furniture will also extend the time between applications. Regular cleaning with a mild soap solution before inspection can help you make the best call. Consistent care not only preserves the bench's look but also prevents moisture damage and rot, ensuring it remains a welcoming spot for years to come.