Airtightness testing
Measure building air leakage, investigate draughts and assess performance against your project target.
Explore airtightnessWe are NSAI registered and provide official certified air tightness test reports. Testing is carried out in accordance with I.S. EN ISO 9972:2015, the standard for determining building air permeability using fan pressurisation.
Registration details & our team →Measure air leakage. Find the areas that need attention. Make informed decisions for your home, development or commercial building.
Dublin, the Midlands and the South East

From air leakage to thermal patterns and ventilation airflow, choose the investigation that answers your project’s questions.
Measure building air leakage, investigate draughts and assess performance against your project target.
Explore airtightnessInvestigate temperature patterns, suspected insulation defects and moisture concerns.
Explore thermal imagingMeasure airflow, assess ventilation performance and investigate leakage in ductwork.
Explore ventilationAgree the scope before the visit. Understand the findings afterwards.
Share the building type, location and programme. We confirm the test, preparation and reporting requirements.
We carry out the agreed testing and record the building conditions and measured results.
Review performance against your project target and discuss further investigation or retesting where needed.
A few practical details to help you plan.
More about our servicesYour quote sets out the agreed test scope, preparation requirements and reporting timetable. Any additional diagnostics, repeat visits or retesting are identified separately before booking.
Preparation depends on the service and stage of construction. We agree a checklist with you before the visit, including the drawings, access, power and building readiness needed for your test.
The time required varies with building size, complexity, readiness and the investigation requested. We discuss the expected visit duration when preparing your quote.
The reporting timetable is agreed as part of the quote. Tell us about handover, certification or project deadlines before booking so the visit and report can be planned around them.