What is a concrete board typically used for?

Concrete board is primarily used as a tile backing material. It offers a stable, water-resistant surface that is ideal for areas susceptible to moisture, such as bathrooms and kitchens. This makes it an excellent choice for attaching tiles, as it helps prevent water damage and mold growth, which can occur when tiles are directly applied to less durable substrates. The strength of concrete board supports the weight of tiles, ensuring that they remain securely attached over time.

In contrast, roofing material typically consists of products such as asphalt shingles, metal roofing, or membrane systems designed specifically for weatherproofing and insulation. Insulation materials serve the purpose of regulating temperature and reducing heat transfer, which is not a function of concrete board. Structural support generally refers to load-bearing components like beams or trusses, which are designed to hold up a building rather than serve as a backing for finishes like tiles. Thus, the use of concrete board as tile backing is the most accurate description of its primary application.