our services
Building Enclosure Commissioning (BECx)
Verify performance from the first requirement to final occupancy.
BECx provides a structured, independent process for helping owners and project teams confirm that roofing, waterproofing, air barriers, exterior walls, fenestration, sealants, and critical transitions are designed, installed, tested, and documented to meet the Owner’s Project Requirements.
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what we do
Why BECx Matters
The building enclosure is complex, with many materials, assemblies and trades. A quality-focused commissioning process helps align the team, reduce risk, and verify that the enclosure performs as intended.
Aligns the enclosure with the OPR
Uses the Owner’s Project Requirements as the benchmark.
Finds interface risks earlier
Identifies and resolves potential issues before they become costly to address.
Verifies installation and field performance
Confirms critical systems, transitions and interfaces are installed and perform as intended.
Tracks issues through resolution
Documents observations, deficiencies and corrective actions to closure.
Creates a documented path to closeout and operation
Compiles a clear record of testing, issues and final enclosure information.
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our process
THE BECx PROCESS
A QUALITY-FOCUSED PROCESS FROM PRE-DESIGN THROUGH OCCUPANCY
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Predesign / OPR
Define enclosure performance goals and acceptance criteria.
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BECx Plan & Team
Establish scope, roles, levels, mockups, tests and documentation.
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Design / Basis of Design
Review enclosure systems, continuity, interfaces, constructability and alignment with OPR.
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Submittals & Mockups
Review representative assemblies, transitions, compatibility and planned testing.
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Construction Observations
Observe field installation at critical systems and interfaces; document issues.
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Field Testing
Coordinate and perform enclosure tests including water penetration, air leakage, whole-building airtightness, ELD, infrared and adhesion testing.
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Issues / Resolution / Reverification
Track deficiencies, corrective work and retesting where required.
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Closeout / Occupancy / Warranty
Compile final documentation, systems information and follow-up reviews.
our ……………
The Enclosure Is Different
Enclosure performance depends on the quality of field-assembled materials, assemblies, transitions and interfaces across multiple trades. BECx provides a systematic approach to verify continuity, compatibility and constructability throughout the project, in accordance with ASHRAE Guideline 0, ASHRAE Standard 202, NIBS Guideline 3-2012 and ASTM E2947.
What NIRIx Reviews & Verifies
Roofing & Waterproofing
Review design, materials, transitions, drainage and field installation.
Air / Water-Resistive Barriers
Evaluate continuity, interfaces, penetrations and attachment.
Exterior Walls
Review assemblies, supporting structure, interfaces and interface detailing.
Curtain Walls, Storefronts, Windows & Doors
Review system design, interfaces, integration and field installation.
Sealants, Joints & Flashings
Evaluate materials, compatibility, installation and movement.
Critical Transitions & Interfaces
Assess complex interfaces across trades and assemblies.
Field Verification
NIRIx performs and coordinates field verification to confirm enclosure installation and performance, using appropriate test methods and visual assessment.
ASTM E1105 Water Penetration Testing
Field testing of installed windows, skylights, doors and walls.
Whole-Building Airtightness Testing
Blower door testing to evaluate air leakage.
Facade Observation
Field review of curtain wall and exterior wall installation.
Infrared Thermography
Identify concealed moisture and insulation anomalies.
Below-Grade Waterproofing Observation
Team Coordination & BECx Support
Support design and construction teams throughout the project.
Early Involvement Matters
Beginning BECx during project inception allows performance goals, interfaces, mockups, testing and documentation to be coordinated before enclosure conditions become difficult or costly to access.
Predesign / OPR
Predesign / OPR
Predesign / OPR
Predesign / OPR
Predesign / OPR
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Explore Related Services
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Let’s Talk
Let’s Talk
Whether you’re planning a new project, evaluating an existing building, looking for a second opinion, or simply want to discuss an enclosure concern, we’d be glad to talk and hear what you’re working on.