Which of the following is not a component of air barrier assembly?

In the context of air barrier assemblies, the primary components involved typically include materials, accessories, and other structural components.

Materials refer to the different substances used to create the air barrier, such as membranes, sprays, or sheets. Accessories might include seals, fasteners, and tapes that help ensure that the barrier is continuous and effective. Components encompass all parts of the assembly that work together to form the air barrier.

Engineered solutions, on the other hand, refer to the design and methodology employed to achieve air barrier performance but do not constitute physical parts of the assembly itself. Rather than being a tangible element of the assembly, they are more about the conceptual and systematic planning of how the air barrier will function within the overall building envelope. This distinction makes it clear why engineered solutions do not qualify as a direct component of air barrier assembly. Such solutions may play a crucial role in the design process but do not fit into the physical assembly category alongside materials, accessories, or components.