Good day welcome to MakeStuff. These panels are extremely well-made and could last generations with the simple proper care. Each panel is pre-washed before assembly. With over 70 pieces per panel. The stain is washed on and then rubbed off that way there’s nothing left on the surface to disengage. Basically every 10 years or so you rewash it. They are as mentioned extremely well-made, furniture quality. And they’re expensive and not for everybody because of their expense. But they do make a great garden feature panel or as I have found a lot of people are putting them at the sides of their house with one panel and one Gate. Nonetheless drop me a line for a quote.