Honestly, if you’re putting an outdoor bench in full sun, you’re going to see color change no matter the material. But how fast it happens and what it looks like is where plastic/resin and wood really split paths.
Most modern outdoor benches marketed as “maintenance‑free” are made from recycled plastic, high‑density polyethylene (HDPE), or a poly lumber blend. A good quality one with built‑in UV inhibitors will usually hold its color pretty well for 2 to 5 years before you notice significant fading or a chalky surface. Cheap resin benches without proper UV stabilization, though, can start looking washed out in as little as 6 to 12 months of constant direct exposure. The fading there tends to be uniform and more of a pastel shift — a dark green will go sage, a bright teal goes dusty. It’s rare for them to crack just from fading, but they lose that crisp look.
Wood benches tell a totally different story. Untreated hardwoods like teak or ipe will famously silver into a gorgeous gray patina within just a few months to a year of direct sun, and that process is basically surface oxidation — not really “damage” in the traditional sense. Softwoods like pine or cedar without a protective stain will go gray faster, often within 3 to 6 months, and they can also start to splinter or check. If you stain or seal a wood bench, you’re committing to a maintenance cycle: a transparent stain might need redoing every year or two, while a solid stain could last 3 to 5 years before peeling and revealing faded wood underneath.
So side by side, a good HDPE bench often keeps its original hue longer than an unstained wood one keeps its fresh‑cut color. But wood ages gracefully into a sought‑after look, while plastic mostly just looks… older plastic. The biggest difference is that plastic fading is generally permanent and uniform, whereas wood’s color change is part of its charm and can be refinished back to fresh if you want to put in the work. If you hate the silvery gray, stick with a UV‑stabilized poly lumber bench or factor in reapplying a stain every couple of years on wood. Either way, some fade is just the bench learning to live outside with you.