Earlier quoted context omitted.
Will it? I'm not aware of any plastics that are insanely durable, they just don't rot. But treated wood also doesn't rot. I'd expect a lot of weathering and surface degradation at a similar rate to typical woods.
> treated wood also doesn't rot That is a pretty broad statement so perhaps you're thinking of a different thing than me when you say "treated wood", but the typical pressure treated pine you get at big box home improvement stores will absolutely rot. They reformulated the treating agent in 2004 so it's no longer using arsenic, and since then pressure treated wood just doesn't last as long. Generally in my area, fenc…
I don't know what this plastic wood is tbh, but I'm having a hard time imagining any plastic surface looking good after 5 years of rain, sun, and boots. Maybe if you sand it down annually. I'm not a fan of grinding microplastics into my yard.