NA5.9 Verification of Continuous Air Barrier
An independent third-party verification shall be conducted in accordance with the following requirements:
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A design review shall be conducted to verify and document compliance with the requirements Section 140.3(a)9, specifically:
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All air barrier components are identified on construction documents
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All joints, interconnections, and penetrations of the continuous air barrier components are identified on construction documents
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The continuous air barrier extends on all surfaces of the building envelope (walls, roof, and lowest floor)
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The continuous air barrier is designed to resist positive and negative pressures from wind, stack effect, and mechanical ventilation.
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The compliance documents indicate the intent to verify the continuous air barrier by way of on-site visual inspection.
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Inspection shall occur during construction when the continuous air barrier is accessible for a visual inspection. The entire continuous air barrier shall be inspected. The third-party entity conducting the verification shall coordinate with the construction team to schedule site visits such that the entire continuous air barrier is verified.
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Inspection of the continuous air barrier materials and assemblies shall verify the following are installed correctly:
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Transitions to adjacent air barrier systems – including but not limited to roof parapet transitions, glazed framing systems to adjacent framed wall assemblies’ transitions, plaza waterproofing to podium transitions, vertical wall to soffit transitions
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Detailing of penetrations through air barrier systems.
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Building assemblies used as ducts or plenums
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Contractor internal quality control/quality assurance
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