What is the correct order of importance for various air barrier parts?

The correct order of importance for various air barrier parts, placing materials at the top, emphasizes the foundational role that materials play in an air barrier system. Materials must be specifically selected based on their properties, such as permeability, durability, and adhesive qualities, to ensure that they effectively limit air movement and prevent energy loss.

Following materials, accessories are critical as they complement and enhance the functionality of the air barriers. These might include sealants, tapes, and flashings that are necessary to ensure continuity and performance in the air barrier system, especially at seams and penetrations.

Finally, components are various assemblies or sections of the air barrier system which also play a role but rely heavily on the proper materials and accessories for effectiveness. While all three elements are important in creating a functional air barrier, understanding this hierarchy helps ensure that the right materials and supporting accessories are prioritized to achieve optimal performance and durability in building enclosures.