What does the term "subfloor" refer to?

The term "subfloor" specifically refers to the layer beneath the final floor covering, making it a critical component in flooring systems. The subfloor serves as a structural base that provides support for the flooring materials installed on top, such as tiles, laminate, or hardwood. It is typically constructed from materials like plywood or oriented strand board (OSB) and is essential for ensuring stability, evenness, and durability of the final installation.

The subfloor also plays a vital role in moisture management, as it can help prevent the absorption of moisture into the tiles or other flooring materials, which can lead to damage over time. Proper installation of the subfloor is crucial for the longevity and performance of the entire flooring assembly.