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Causes insulation thick air?

The answer is: No! But still, even in expert circles, holds the mistaken belief that a house with modern insulation can not breathe. That's not true! For a building wall - Whether with or without thermal insulation - must be air tight even (DIN 4108) Thermal insulation in buildings). Only 2 percent of the air escape through the wall. against poor air quality that is is only one thing: air. Just
enmal two percent of the air humidity can diffuse across the wall. The remaining 98 percent must be paid via the ventilation behavior.
According to DIN 4108, it even aim that a wall is air tight .. For each leakage means that the heat and is thus lost the power over the walls. At today's energy prices can be, but no longer afford to heat the neighborhood.
The Construction Technology has indeed in recent decades changed - we use our behavior, however, often not. High energy costs tempt little heat, and revealed, is rarely still, because you do not want the insulated warm house to cool down. Previously window or roof trusses were still many "loopholes" through which the wind whistled at times. Here was an unwanted circulation, due to the current energy prices do no one can or wants more.

Peter Wohlfarth
expert for damage to buildings