Below is a list of Stair Treads manufacturers from Alum Bank, Pennsylvania. Stair treads are permanent slip resistant surfaces that are attached to stairways in factories, workplaces, outdoor areas and other areas in which a slip-proof stair is required. Typically fabricated from metals such as aluminum or steel, although fiberglass grating or plastic grating can also be used, stair treads are available in a wide range of sizes, nosing options and construction methods.