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- Airtightness and airtightness measurement
- dely beleived that poor airtightness ensures good ventilation in dwellings. However air movement is greatly dep... onsistant hygienic level of air exchange and high ventilation heat losses are inevitable. This applies just as... r good quality air can be ensured with mechanical ventilation. At the very least, ventilation through joints causes discomfort and heat losses because the heat cannot be r