Stair treads and nosings are stair and staircase components that provide wear resistance, corrosion resistance, structural, and anti-slip functionality. Stair treads are made of metal or plastic and are designed to keep people from slipping on greasy, oily, icy, muddy, or debris-covered surfaces. The nosing is the part of the stair tread that extends beyond the riser or apron, the part of the step that supports the tread itself. Many different types of stair treads and nosing are available for industrial, commercial, and residential applications. Materials of construction include expanded metal, rubber vinyl, diamond plate, concrete, stainless steel, and galvanized metal. Some stair treads and nosing use abrasive bars and are designed to be retrofit over existing stairs, stairways, or staircases.
Stair treads and nosings may be equipped with special safety features. For example, stair treads with diamond-shaped openings have serrated teeth to provide a slip-resistant surface that is suitable for both indoor and outdoor environments. Diamond stair treads are also self-cleaning and self-draining. They have a long life-capacity and openings that can catch falling items such as tools. Stair treads with larger diamond-shaped openings are made from thicker materials for high-loading applications. Slotted stair treads are slip resistant in all directions and permit the passage of air, water, and light. Stair treads with round, de-bossed holes allow fluids, mud, chips and other debris to drain away. Stair treads and nosing with smaller holes are well-suited for plants, factories and processing facilities in which oil and grease pose a risk of accidents.
One-Component or Two-Component Systems
Stair nosings are available as one-component or two-component systems. Single-component or single-piece stair nosings are available for both indoor and outdoor applications. They are often less expensive than multi-piece systems and easier to install. Two-component stair nosing systems consist of sub-channels that are installed during construction and safety nosings that are installed after construction is complete. Hardware includes metal screws and concealed fasteners. Photoluminescent or glow-in-the dark stair treads and nosing are also available. Typically, these stair treads and nosings are used in emergency exit stairwells and along emergency pathways, as well as other locations where extra visibility is required. They are manufactured according to published safety standards and may meet or exceed regulatory requirements for brightness.