Airtightness Knowledge Hub: BlowerDoor Testing and Air Leakage Detection

Explore practical guidance on building airtightness, BlowerDoor testing and air leakage detection. Our articles cover essential principles, airtightness quality assurance, refurbishment projects, large buildings and investigations into potential building defects.

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Why is airtightness important?

An airtight building envelope helps reduce uncontrolled heat loss and draughts. Discover why airtightness matters in new construction and refurbishment, and how it can help prevent moisture-related building damage.

The BlowerDoor test for quality assurance

How does a BlowerDoor test work? Learn how building airtightness is assessed and how testing supports quality assurance during construction.

Air leakage detection: identifying leaks reliably

Leaks around windows, junctions and service penetrations can compromise airtightness. Find out how air leakage detection during a BlowerDoor test helps locate these problem areas.

BlowerDoor testing in large buildings

Large buildings present specific challenges, including building volume, wind and temperature-related pressure effects. Learn how airtightness tests are planned and when multiple fans may be needed.

BlowerDoor testing during refurbishment

Airtightness testing can reveal existing leaks before or during refurbishment. Discover how BlowerDoor testing informs renovation planning and helps verify the quality of completed work.

Airtightness testing for building damage investigations

When investigating moisture damage or building defects, airtightness testing can help identify airflows and leakage paths. Learn how the findings can support the assessment of possible causes.

Air leakage detection methods: which techniques are used?

From anemometers and smoke to ultrasound and thermography, explore common air leakage detection techniques and understand when each method can be useful.