That's an excellent question, and it gets to the heart of why many parks and public spaces are making the switch. In terms of pure durability, recycled plastic benches consistently outperform traditional wood in nearly every measurable way.
While a well-maintained hardwood bench might last 10-15 years, a high-quality recycled plastic bench is built to last for decades, often with warranties of 20 years or more. The key difference lies in how they handle the elements. Wood is a natural, porous material that is vulnerable to its environment. Over time, it will inevitably rot, splinter, crack, and warp. It attracts moisture, which leads to mold and mildew, and it's a tasty target for insects like termites and wood-boring beetles.
Recycled plastic benches, made from dense polyethylene, are essentially inert. They are completely immune to rot, rust, and insect damage. They won't splinter, which is a major safety concern, especially for children and pets. They are highly resistant to moisture, corrosive substances like bird droppings, and extreme temperature fluctuations that cause wood to expand and contract.
The comparison on maintenance is stark. Wood requires regular, costly upkeep: sanding, sealing, staining, or painting every 1-2 years to preserve its lifespan. Neglect this, and its life shortens dramatically. A recycled plastic bench needs none of that. An occasional wash with soap and water is all it takes to keep it looking new. It never needs sealing or painting because the color is molded throughout the entire material, so scratches and scuffs are far less noticeable.
In summary, for long-term durability and minimal lifecycle cost, recycled plastic is the superior material. It provides a consistent, safe, and comfortable seating solution that retains its structural integrity and appearance for generations, with virtually no maintenance. Wood offers classic aesthetics but requires constant care to achieve a fraction of the service life.