Site testing

Air tightness testing

Check the completed building’s air leakage and bring the result into the final assessment.

What this service helps you do.

Air tightness testing measures air leakage through the building envelope under controlled pressure. Ordellis agrees the testing scope, readiness requirements and reporting arrangements around the dwelling, then coordinates the result with the relevant final energy assessment.

What’s included.

  • An agreed test scope, target and site readiness brief.
  • Air leakage testing arrangements for the identified dwellings.
  • A test report recording the agreed measurement and dwelling information.
  • Coordination of the test result with the as-built SAP assessment where included.

What we need to get started.

  • Site address, plot references and dwelling plans.
  • The design air permeability target and available SAP information.
  • Construction stage, completion date and site access arrangements.
  • Details of the envelope, ventilation systems and outstanding works.

The quotation confirms test arrangements, reporting and certification requirements, and any allowance for retesting. The dwelling must meet the agreed readiness conditions before testing.

Your questions, answered.

When should I arrange the test?

Book ahead of completion and share the programme. The building envelope and relevant systems need to be ready for the agreed test procedure.

What happens if the result misses the design target?

The project team needs to review the result, investigate leakage and agree any remedial work or retest. Final SAP inputs must reflect the accepted test evidence.

Connected expertise

Services that work together.

Tell us what you’re building.

Share your drawings and project location for a clear scope and quotation.

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