They are intended for access to residences, public or industrial spaces. They are made to withstand in time.
Steps are recommended to be from the grill, especially in order not to retain water or any impurities and, at the same time, to prevent slipping.
Surface treatment against corrosion is the decisive factor in ensuring the longevity of the exterior stairs. Among these, thermal zinc is the most recommended treatment due to increased resistance to attack by climatic factors; depending on the degree of exposure of the stair, classic priming and painting can also be applied.