Airbase publication

When it comes to evaluating the quality of building work, technical and legal perspectives often clash. This is probably particularly true when it comes to evaluating the airtightness of building envelopes. This presentation is an attempt at clearing up frequent misunderstandings and at formulating questions that would help to...

It is easier for large buildings to meet the requirements of airtight construction than for small buildings since the proportion of internal air volume to envelope area is more favorable. In large buildings, typical leakages,also found in single-family homes, bear a higher risk. The lift and driving forces for leakage flows are stronger. In addition, building...

In 2008, our trade association, “klimaskaerm” (comparable with FLIB e.V.), started a voluntary certification system in collaboration with Danish Standard. The system costs about 4500 euros per year, and was never very successful; only 3 companies were certified from the start. In 2013, we changed the agency to BK, which could provide...

In Belgium, airtightness of buildings is taken into account in the regional Energy Performance of Buildings (EPB) regulations. When measured, it can be used in the calculation in place of a default unfavourable value and therefore improve the calculated performance. Supplementary specifications to the European standard...

Condensation risks in wooden building components are mainly caused by water vapor penetrating the cross section of the component through airflow. Even small pressure differentials result in a lot more vapor flowing through a joint of only a few millimeters than that which would migrate by diffusion through many more undisturbed square meters of area...

Based on an application for standardization by the company ISOVER in October 2007, the German Industrial Standard DIN 4108 – 11 has been cleared by the responsible bodies in DIN for review by the committee NA005-56-93AA, “Airtightness”. The work on the details of the standard has been going on for seven and a half years now...