Businesses in the stairs and staircases category design, make, supply, install and repair stairs for homes and commercial buildings. Work may involve a new staircase, replacing an existing one, altering a layout or restoring original features. Staircases are made in materials such as timber, metal, glass or stone, and may be straight, quarter-turn, half-turn or spiral, depending on the space and building design. Customers can expect help with measuring, choosing a style and material, and planning the staircase to suit the building. Services may include made-to-measure construction, fitting of treads, risers, handrails, balustrades and newel posts, as well as repairs, refinishing and replacement of worn or damaged parts. Installers need to account for safe access and applicable building regulations, including requirements for dimensions, guarding and handrails. Some businesses also supply stair parts for installation by builders or competent DIY customers.