Which two conventional types of air barrier systems are identified?

Prepare for the ABAA Whole-Building Airtightness Testing Level 1. Master the concepts with various study materials including flashcards and practice questions. Get ready to ace your exam effortlessly!

The identification of external and internal barriers as conventional types of air barrier systems is significant in the context of building design and construction. An external air barrier system is typically located on the outside of a building's insulation, serving to prevent air infiltration from the outside environment into the conditioned spaces. This helps to enhance the energy efficiency of the building by controlling air leakage and moisture.

Conversely, internal air barriers are situated on the interior side of the thermal insulation and help to control air movement within the building. This can be particularly important in maintaining indoor air quality and comfort by managing the transfer of air between different spaces within the building.

Choosing a combination of both external and internal barriers allows for a more comprehensive approach to achieving airtightness, as it addresses both the exterior environmental influences and the internal airflow dynamics, ultimately contributing to improved building performance.

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