SERVICE
Airtightness
Testing
Certified blower door testing for passive house projects, energy-efficient buildings, and quality assurance. Delivered in partnership with GAIA Builders.
A practical answer
What is airtightness and blower-door testing?
Airtightness testing measures how much uncontrolled air leakage passes through a building enclosure. A blower-door test helps a project team identify leakage and understand whether the envelope is performing as intended.
Clear answers
Questions about airtightness and blower-door testing?
Why is airtightness important?
Uncontrolled air leakage can affect comfort, moisture risk, ventilation performance, and energy demand. Testing provides evidence that helps a team find and address leakage.
When should a building be tested?
Testing is most useful when the enclosure is sufficiently complete for meaningful results and there is still time to investigate and improve identified leakage.
What does a blower-door test involve?
A fan temporarily pressurises or depressurises the building while measurements are taken. The team can then investigate likely leakage paths and document the result.
How does airtightness testing connect to verification?
Testing can provide project evidence for performance review and verification. The specific requirements depend on the project pathway and documentation needs.
Testing Services
- Blower Door Testing — On-site pressure testing with calibrated fan equipment
- Leak Detection — Infrared thermography and smoke pencil diagnostics
- Pre- & Post-Remediation — Baseline testing plus targeted re-testing
- PHI Certification Tests — Meeting n50 ≤ 0.6 ACH standard
- Quality Feedback — Detailed reports with actionable recommendations
When to Test
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Mid-Construction
Test after the airtight layer is installed but before internal linings conceal it — enables cost-effective fixes.
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Pre-Certification
Final test confirming compliance with passive house standards.
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Quality Assurance
Periodic testing for high-performance building projects.
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