That's an excellent question! Protecting wooden park benches is crucial for their longevity and beauty. The "best" sealant depends on your specific needs, but I can guide you through the top choices.
For maximum durability and water resistance, I often recommend a high-quality oil-based sealant or penetrating oil. Products like Thompson's WaterSeal or Ready Seal penetrate deep into the wood fibers, providing robust protection against rain and moisture. They enhance the wood's natural grain but require more drying time and regular reapplication every 1-2 years.
If you prefer easier cleanup and faster drying, a water-based acrylic sealant is a fantastic option. Brands like DEFY Extreme or Cabot's offer clear finishes that resist UV rays, preventing the wood from graying. They're low-odor and easier to apply, making them a popular choice for public spaces. Reapplication is typically needed every 2-3 years.
For a balance of durability and ease, consider a hybrid or polyurethane-based formula. These, such as Helmsman Spar Urethane, form a hard, protective film on the surface that excels at resisting scratches and heavy wear. They are ideal for high-traffic park benches.
Before applying any sealant, ensure the bench is completely clean, dry, and sanded smooth. Apply in thin, even coats according to the manufacturer's directions. Your well-maintained benches will thank you with years of reliable service!