Talk through your project.
Tell us the building type, location and stage of construction. We’ll discuss what you need and how to prepare the building for testing.
Understand your building
Understand your building.
Improve its performance.
A comfortable, efficient building starts with controlling where air goes. Testing gives you the information to get it right.
What is air tightness?
Keep the warmth.
Understand the gaps.
Air tightness describes how well a building’s outer fabric resists unintended air leakage. Gaps around windows, doors, service openings and junctions can let warm air escape and cold draughts enter.
A blower-door test uses a temporary fan in an external doorway to create a pressure difference. Measuring the resulting airflow gives a picture of the building’s air leakage.
The test helps you understand performance. Sealing the leaks it reveals is what can improve comfort and reduce heat loss.
A clear process
From first call to clear results.
Measure the performance.
Blower-door equipment measures air leakage. Where diagnostic checks are included, the findings help identify areas that may need attention.
Know your next step.
Review the measured results with a clear record of the test. Discuss any remedial work and whether a follow-up test would be useful.
The right time to test
Useful insight.
At every stage.
On a new build, checks during construction can help identify problems while they are accessible. A completion test records performance at the final stage.
For an existing home or renovation, testing can help locate leakage and inform plans for improving the building. The right timing depends on the project, so talk to us before you book.
- New homes and housing developments
- Renovations and home energy upgrades
- Commercial and larger building projects
Airtightness and ventilation work together.
A more airtight building still needs suitable ventilation to provide fresh air and manage moisture. Planned ventilation is part of a comfortable, healthy building.
A more airtight building still needs suitable ventilation to provide fresh air and manage moisture. Planned ventilation is part of a comfortable, healthy building.
Learn more from SEAI’s home energy guidance and ventilation guidance.