If you're selecting benches for a city park, streetscape, or public plaza, durability is likely a top concern. The battle between wood and metal is a classic one, and the winner for longevity isn't as straightforward as you might think.
Metal benches, typically made from aluminum or steel, offer immense structural strength. They resist splintering, cracking, and insect damage. However, in urban environments, their greatest enemy is corrosion. Without a high-quality, powder-coated finish, moisture and road salts can cause rust, leading to weakness and unsightly appearance. Aluminum is naturally more corrosion-resistant but can be softer and more expensive.
Wooden benches, often crafted from hardwoods like oak or teak or pressure-treated pine, provide a timeless aesthetic. Properly treated wood has good natural resistance to the elements. The key issue is ongoing maintenance. Wood can rot, warp, and splinter over time if not regularly sealed or stained. It's also vulnerable to graffiti, which can be harder to remove than from a coated metal surface.
So, which lasts longer? The answer lies in maintenance and quality. A high-grade, powder-coated aluminum or galvanized steel bench with minimal weld points can easily last 20-30 years with little upkeep. A bench made from high-density hardwood or properly pressure-treated lumber, with a rigorous resealing schedule every 2-3 years, can have a comparable lifespan. For a low-maintenance, set-it-and-forget-it solution in harsh urban climates, a premium metal bench often has the edge. For a warmer look where maintenance budgets allow, quality wood is a durable and beautiful choice. Ultimately, the longest-lasting bench is the one made from high-quality materials and installed with a realistic plan for its future care.