What is a brick veneer?

A brick veneer refers to a single thickness of brick that is attached to a frame or other structural material, serving primarily as a decorative facing. This method is often used because it provides the aesthetic appeal of a brick wall while not bearing the weight as a full brick wall would. The veneer typically adds to the overall insulation of a structure while also allowing for easier and more cost-effective construction.

By contrast, the other options do not accurately reflect the definition or characteristics of a brick veneer. A double thickness of bricks implies a more robust construction that is structurally significant, which does not align with the concept of a veneer. Describing it as a type of modern brick construction or as a structural brick wall also misrepresents its intended purpose, as a brick veneer is not meant to serve as the main load-bearing element of a building. Thus, the definition provided in the correct choice aligns well with the fundamental understanding of what a brick veneer is in construction terminology.