Façade Mock-Up Air Infiltration & Leakage Test Checklist

Definition: Test façade mock-up for air infiltration and leakage performance provides field teams a structured, evidence-driven process to plan, execute, and document airtightness testing of full-scale façade assemblies.

Verify mock-up build, isolation, and pressure steps match approved plan
Measure leakage rates at staged pressures with calibrated equipment
Pinpoint leakage paths using smoke, infrared, and data trends
Interactive, commentable, export, QR code verification for sign-offs

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Checklist

Test façade mock-up for air infiltration and leakage performance ensures a full-scale assembly achieves the specified air tightness before production. This checklist focuses on air leakage, air infiltration, and pressure testing of a dedicated façade mock-up—excluding water penetration and structural testing. By verifying materials, interfaces, and installation quality under controlled pressure differentials, project teams reduce risk of condensation, energy loss, drafts, and occupant discomfort. The guide outlines preparation, instrumentation calibration, chamber setup, sequence of pressures, data capture, and acceptance against project limits in SI units. It also emphasizes isolating non-test paths, documenting evidence (photos, readings, serial numbers), and recording corrective actions and retests. Use it to coordinate contractors, commissioning agents, and quality teams, ensuring the build aligns with approved drawings and specifications. Start interactive mode to tick items, add comments at each step, and export PDF/Excel; the QR code secures sign-offs and authenticates your final report.

Plan and execute airtightness testing on a full-scale façade mock-up, aligning build details, instrumentation accuracy, and chamber sealing to achieve reliable, repeatable results that reflect real interface conditions before field deployment.
Run staged depressurization and pressurization sequences, record stable differential pressures, and quantify leakage rates in L/s·m² against project limits; use smoke and infrared to localize defects and document corrective actions with evidence.
Interactive online checklist with tick, comment, and export features secured by QR code. Capture photos, readings, and signatures; archive calibration certificates and approval logs for transparent, auditable quality assurance.
Deliver a concise, traceable test report: scope, methods, pressure steps, leakage results, anomalies, remedial work, and retests. Provide clear acceptance statements per approved project specifications and authority requirements.

Pre-Test Documentation and Approvals

1. Confirm approved test plan defines target pressures (e.g., 50, 75, 150, 300 Pa), dwell times, acceptance limits (L/s·m²), and safety boundaries; upload signed plan and permit-to-test.
2. Verify mock-up drawings, materials, and interfaces match approved submittals; photograph labels and batch numbers; record any deviations with written approval per project specifications.
3. Log responsibilities and contacts for test operator, GC, façade contractor, commissioning agent; capture digital signatures acknowledging roles and communication protocol.

Mock-Up Assembly and Sealing

4. Inspect perimeter substrate and frame alignment using laser level; document tolerance within ±3 mm over 3 m; photograph datum marks and shims.
5. Verify gaskets, sealants, and tapes are installed per manufacturer instructions; record cure times, lot numbers, and ambient conditions (°C, %RH) with photos.
6. Mask and seal non-test penetrations (service holes, unused joints) with temporary air-impermeable membranes; photo-verify continuity and note materials used.

Instrumentation and Calibration

7. Confirm differential manometer accuracy ±1 Pa and zero drift <1 Pa; attach current calibration certificates and serial numbers to the record.
8. Check airflow measurement device accuracy ±2% full scale; document orifice/fan configuration, temperature and barometric inputs, and calibration date.
9. Install pressure taps at interior reference and exterior chamber per plan; photo each location and label tubing to avoid cross-connections.

Test Chamber Setup

10. Build airtight chamber/plenum against exterior face using rigid panels and sealed joints; photo perimeter seals and verify no bridging gaps >3 mm.
11. Conduct pre-test leak isolation: run fan at 50 Pa, use smoke pencil to find unintended chamber leaks; patch and re-check until no visible bypass.
12. Stabilize ambient conditions: record interior/exterior temperature (°C), %RH, and wind speed (m/s); proceed only if wind ≤3 m/s or per plan.

Pressure Sequence and Measurements

13. Depressurization series: hold at 50, 75, 150, 300 Pa for ≥60 s each; record stable ΔP (Pa) and leakage (L/s·m²) at each step with time-stamp.
14. Pressurization series: repeat sequence 50–300 Pa; document hysteresis if observed; compare to acceptance limits per approved project specifications.
15. At peak pressure, scan interfaces (frame-to-wall, mullions, seals) with smoke and IR camera; geo-tag photos/videos of leaks for remediation.
16. Check system stability: confirm pressure fluctuation ≤±2 Pa during each dwell; note corrective throttle or damper adjustments in comments.
17. Normalize leakage to test area: verify measured façade area (m²) with laser; attach marked elevation showing dimensions and calculation.

Post-Test Inspection and Reporting

18. If leakage exceeds limit at any step, coordinate targeted sealing; document materials, locations, and cure times; schedule and record retest results.
19. Compile results table and pressure–leakage curve; include uncertainties, instrument specs, ambient data, and photos; state pass/fail per specifications.
20. Remove temporary seals without damaging the mock-up; photo restored condition; dispose of materials per site environmental requirements.
21. Obtain digital sign-offs from test operator, GC, façade contractor, and client representative; lock report with QR authentication.
22. Archive all evidence: raw data files, calibration certs, photos, approvals, and final report; export to PDF/Excel and upload to project CDE.

Plan the Mock-Up and Control Interfaces

A successful façade air leakage test starts with a representative mock-up. Match glazing, frames, anchors, seals, and insulation exactly to approved submittals so airflow paths mirror production units. Define test area clearly on elevations, including perimeter joints and typical details. Temporary seals must isolate only non-test pathways, not cover intentional joints within scope. Confirm tolerances for frame plumb/level and joint widths before installing gaskets and sealants; curing time and environmental conditions significantly influence airtightness. Establish acceptance limits in L/s·m² for selected pressures and document them in the plan. Early collaboration among the GC, façade contractor, and commissioning agent avoids rework by verifying details like backer-rod sizes, membrane laps, and transitions. Photographs of each interface before enclosure help diagnose later leaks. By controlling what is inside test scope and how it is assembled, results become reliable, repeatable, and defensible when compared with project requirements.

Mock-up must mirror approved production details and materials
Define test area and joints on marked elevations
Isolate only non-test paths with temporary sealing
Record environmental conditions and sealant cure status
Set acceptance limits in L/s·m² at target pressures

Instrument Accuracy and Pressure Stability

Accurate measurements depend on well-placed taps and calibrated instruments. Use a differential manometer with ±1 Pa accuracy and verify zero before each run. Configure airflow measurement to account for air density using current temperature and barometric pressure. Maintain stable pressure setpoints; fluctuations beyond ±2 Pa can distort leakage values, especially at lower pressures. Place reference taps away from localized eddies to prevent biased readings. Before the formal sequence, conduct a chamber integrity check using a smoke pencil and rectify bypass routes. During the test, log data at 1–2 s intervals, holding each step long enough to stabilize readings. Include serial numbers, calibration certificates, and photos of setups in the record. These practices reduce uncertainty, making pass/fail conclusions robust and reducing the risk of unnecessary remediation.

Use calibrated manometer and airflow device
Account for air density with live temperature and pressure
Keep pressure fluctuation within ±2 Pa
Place taps to avoid eddies and bias
Log data at 1–2 s intervals

Locate Leaks and Close the Loop

Quantifying leakage identifies performance gaps; pinpointing locations enables efficient fixes. At each pressure step, scan interface lines—frame-to-wall, mullions, sill and head joints—with a smoke pencil for directional flow. An infrared camera can highlight colder streaks tracing infiltration routes, particularly near thermal breaks. Tag photos to the exact drawing grid and note materials present. If leakage exceeds limits, apply targeted remediation, respecting manufacturer cure times and sequencing. Retest after curing, repeating the same pressure steps for apples-to-apples comparison. Summarize findings in a plot of leakage versus pressure and annotate notable inflection points where specific defects were corrected. Clear, traceable documentation streamlines approval and de-risks production rollout.

Use smoke to visualize airflow direction
Apply IR imaging to reveal concealed paths
Geo-tag photos to drawing grids
Retest after remediation cures
Plot leakage versus pressure for clarity

How to Use This Interactive Façade Air Leakage Test Checklist

Preparation: gather approved test plan, calibrated manometer and airflow device, smoke pencil, infrared camera, sealing tapes/membranes, laser measurer, PPE (gloves, eye protection, hearing protection), and ensure safe access and lighting.
Set up the project in the app: enter mock-up ID, test area (m²), target pressures, acceptance limits, team roles, and upload drawings and calibration certificates.
Using the Interactive Checklist: start interactive mode, tick each item as completed, attach photos/videos and readings, and add time-stamped comments for anomalies or approvals.
Export and Share: generate a structured report and export as PDF/Excel; include graphs and evidence, then circulate to stakeholders directly from the platform.
Sign-Off: collect digital signatures from responsible parties; lock the submission with a QR-authenticated record and archive in the project’s common data environment.

Test Façade Mock-Up: Air Infiltration and Leakage Performance

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Façade Mock-Up Air Infiltration Test

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Start Checklist Tick off tasks, leave comments on items or the whole form, and export your completed report to PDF or Excel—with a built-in QR code for authenticity.

License: CC-BY 4.0. Please credit: “Façade Mock-Up Air Infiltration Test by Quollnet” with a link to this source page.

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Tariq Malik MetroMasterTariq

Aug 15, 2026

FAQ

Question: What pressures and acceptance limits should I use for a façade mock-up air leakage test?

Select staged pressures that reflect project requirements and risk, commonly spanning low to high service levels. Define leakage limits in L/s·m² for each step. Align targets per approved project specifications and authority requirements, considering climate, exposure, and system type. Document limits in the test plan and reference them in pass/fail statements.

Question: How do I isolate non-test leakage paths without masking meaningful joints?

Seal only unintended openings, discontinuities, or construction penetrations outside the defined test area. Use air-impermeable tapes, membranes, and temporary panels, then run a low-pressure smoke check. Do not cover joints intended to be part of the test scope. Photograph all temporary seals and mark them on drawings for traceability.

Question: Which instruments are required to ensure accurate leakage measurements?

Use a calibrated differential manometer (±1 Pa accuracy) and an airflow measurement device (±2% full scale). Install reference pressure taps correctly, account for air density using current temperature and barometric pressure, and log data at short intervals. Keep calibration certificates and serial numbers attached to the test record.

Question: What should the final report include to satisfy stakeholders?

Provide scope, drawings, test area, instrumentation specifications, calibration records, ambient conditions, pressure sequence, leakage results in L/s·m², photos/videos of observed leaks, remediation notes, retest outcomes, and signed acceptance per approved project specifications and authority requirements. Include an exportable summary and QR-verified authentication.

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