New WPC stairs: Deckron и Darvolex« Back
It should be kept in mind that the stairs terraces, paths and bridges - are the most highly stressed elements, as they need to keep dynamic and shock loads. If you run up the stairs, the load on the board is about 2-3 times higher than static. If a woman in high heels goes down the stairs - shock load on the point (heel) is also about 2-3 times higher than static. That is why, according to our experience, the best solution - it's solid stairs.
More information on the WPC stairs page.