When establishing the
airtight level, the panel joints and connections to further building components should be covered with suitable adhesive tapes. For high demands on the air-tightness of the building, such as in
passive houses, we recommend the use of
OSB 4 TOP with
proven high air-tightness. The airtightness of the building should be verified using a blower door test, if possible during the construction process.
Leaks in the construction can hardly be avoided completely. The largely vapour-permeable timber frame construction allows
subsequent drying, in case humidity has reached the structure despite the greatest of care being shown.