Buildings have to be airtight. All buildings? No not all, only those with heat insulation and you need heat insulation in energy efficient buildings. But if you build in heat insulation, you need airtightnes as well. We do the airtightness tests and we can show you if there are any problems with the airtightness barrier. If there are leckages in that barrier, moisture and mould can get into the constraction and damage the building. We show you how to fix these problems and we can show you, how to do the testings, so you can test your building yourself. We´ve done these tests in the first certificated passive hauses of China and we would be very proud, if we can help you too. If you need an expert for blower door test, please feel free to contact us.

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