Determination of the air permeability of structural components in situ

Purpose of the work

This work presents multiple in-situ measurements of building components airtightness using a direct component testing. Its purpose is to highlight advantages, drawbacks and limitations of the method compared to other methods for measuring in-situ the airtightness of building components (e.g. the indirect method).

Method of approach

Assessment of durability of airtightness in passive houses through recurring testing

Purpose of the work

The aim of this study was to evaluate the evolution of the building airtightness over the time and to assess the long term performance (durability) of the air barrier system. For this purpose, several passive houses were repeatedly tested over a period of 6 to 11 years.

Method of approach

The challenge of measuring highly leak tight buildings and apartments

Purpose of the work

This paper presents the challenges of conducting air permeability measurements in very densely constructed buildings and apartments.

Content of the contribution

Report on air permeability measurements in consumer markets and office blocks in actual practice

Purpose of the work

Presentation of the various requirements for airtightness of the building envelope arising during planning as well as the mandatory provisions resulting from standardization, regulations and certification: What can measurement service providers do to insure that the ensuing problems are identified at an early stage?

Method of approach

Summary of the experience gained over several years with air permeability measurements in consumer markets, commercial buildings and other large structures.

Measurement of airtightness in high-rise structures

Purpose of the work

Clear and substantiated instructions for airtightness measurements of high-rise buildings, taking into account the particular requirements resulting from building height

Content of the contribution

German national annex to DIN EN ISO 9972

Purpose of the work

A procedure for the preparation of buildings for airtightness checks in compliance with legal requirements was to be defined in a standard. It should be possible to transfer the measurement result directly into the energy performance calculation as specified in DIN V 18599 without making any mathematical corrections. Checklists in the standard should largely eliminate the need to consult previous publications on interpretation issues.

Method of approach

Implementation of the EN ISO 9972 standard into the Czech Republic

The requirements concerning airtightness of the building envelope were introduced into the national standard ČSN 73 0540-2 in 2002. Until now the proof of compliance has not been mandatory. The compliance should be checked by means of testing according to the ČSN EN ISO 9972 standard (introduced in 2016 and translated into the Czech language in 2017).

However, the ČSN 73 0540-2 standard only sets the requirements but gives no further information about the time of test and the building preparation or other guidance beyond the ČSN EN ISO 9972 standard.

Reports from various countries on the status of the national annexes of ISO 9972 – Spain

Even though air leakage assessment is key towards a better energy performance of buildings, Spain has still not established limitations regarding airtightness. National building regulations in Spain are gathered in the National Building Code (CTE), which was first released in 2006 and updated several times so far.

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