That's an excellent and very practical question! The short answer is yes, recycled plastic park benches can fade over time, but the rate and severity depend heavily on several key factors. Unlike wood that grays or metal that rusts, the primary challenge for plastic is UV degradation from the sun.
The pigments and colorants mixed into the recycled plastic material are susceptible to the sun's powerful ultraviolet rays. Over years of constant exposure, these rays can break down the chemical bonds of the pigments, leading to a gradual lightening or "chalking" of the surface. You might notice the color becoming less vibrant, often taking on a slightly whitish or washed-out hue.
However, it's not a foregone conclusion. The quality of the bench plays a huge role. Higher-grade recycled plastic benches from reputable manufacturers include UV-inhibiting stabilizers during production. These additives act like sunscreen, significantly slowing the fading process. Benches made with a full-cap shell (a thick, solid outer layer) also protect the color better than those with a uniform composition throughout.
Geography matters too. A bench in the intense, year-round sun of Arizona will fade faster than one in a shadier, cloudier climate. While you can't stop fading entirely, proper maintenance like occasional cleaning with mild soap to remove dirt and pollutants can help preserve the color. Ultimately, while some fading may occur, these benches remain incredibly durable, splinter-free, and structurally sound for decades, making them a sustainable and low-maintenance choice. The fading is typically a cosmetic change rather than a functional failure.