====== Checklist: Test reports of airtightness measurements ======

Is the air tightness measurement protocol complete? This can be easily confirmed using this checklist:

  * Is all general information included?
      * Tester: name, address and signature
      * Object
      * Date of test
      * Device
      * Measurement standard (norm)
      * Inside and outdoor temperatures
      * Wind velocity
      * Flow coefficient Cenv
      * Leakage coefficient CL
  * Is the airtightness measurement performed in accordance with ISO 9972 (Method 1)?
  * Is room-by-room calculation of the air volume of the building included? Is the calculation correct?
  * Has the installation location of the fan been documented?
  * Has temporary sealing of the building envelope been recorded (sealing of outdoor air and exhaust air ducts at least)?
  * Has a series of measurements at positive pressure AND negative pressure been performed?
  * For each series of measurements, were 5 measuring points used at different pressure differences (highest value ± 50 Pa at least)?
  * Is the flow exponent "n" between 0.5 and 1.0 (otherwise indicates measurement error due to a change in the envelope e.g. window opening)?
  * Is the average value of the natural pressure difference between -5 and 5 Pa (measurement of the pressure difference before and after each measurement series)?
  * //Note://  If the wind speed is greater than 6 m/s (21.6 km/h) OR the wind force is higher than 3 Beaufort, the stated limiting values for the pressure difference will usually be exceeded.
  * In general, the positive and negative pressure values n50 are relatively close to each other. If there are significant differences between the two results, a plausible explanation should be given in the measurement report.

**Recommendation:**  leakage detection at negative pressure should be carried out before the measurements, and any large leaks should be rectified and this should be documented.

**Exception:**  For the measurement of tall buildings (e.g. high-rise buildings) special boundary conditions apply. Please contact your certifier or building.certification@passiv.de

{{:picopen:v1.2_checklist_test_reports_of_airtightness_measurements.pdf|Checklist: Test reports of airtightness measurements for download }}

==== See also ====

Record of an airtightness test: [[:certification:certified_passive_houses:example_documents|]]

[[..:airtightness_measurement_of_high-rise_buildings_guidelines|]]

[[..:..:airtight_construction|Overview of the Passipedia articles on airtightness]]

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