That's an excellent and very practical question! As a manufacturer, we get asked this a lot, and the honest answer is: it comes down to intentional engineering and material selection. Not all benches are created equal, and harsh winters with road salt are the ultimate test for outdoor furniture.
Our commercial-grade park benches are specifically designed to handle these exact conditions. The key is combating two main enemies: corrosion from salt and physical stress from freeze-thaw cycles.
First, we use heavily galvanized steel or aluminum for frames and components. Galvanization involves coating the steel in a protective layer of zinc, which acts as a sacrificial barrier. Even if scratched, the zinc corrodes first, protecting the underlying steel. For maximum protection, we often specify powder coating *over* the galvanized steel. This double layer provides exceptional resistance to salt corrosion.
For the seating slats, we choose dense, rot-resistant hardwoods like Ipe or thermally modified ash. These woods have a natural resilience to moisture. Alternatively, we use recycled plastic lumber or composite materials. These are completely impervious to salt, won't splinter, and require zero maintenance, making them ideal for high-salinity areas.
The design also plays a role. We avoid moisture traps by using open frameworks and slatted designs that allow snow and ice to melt through rather than pool. All fasteners are stainless steel to prevent rust stains and failure.
As for maintenance, a simple rinse with fresh water in the spring to remove salt residue is the best practice. For powder-coated frames, inspect for any deep chips and touch them up with matching paint. For wood benches, a periodic application of a UV-protective oil helps maintain its integrity.
So, while no product is utterly indestructible, selecting a bench built with these harsh conditions in mind from the start makes all the difference. It ensures your public spaces remain inviting and functional, season after season, without constant replacement costs.