Thermography in detection of air leakages and thermal insulation defects in the building envelope. Infrapunakuvaus rakennuksen ulkovaipan lammoneristysvirheiden ja ilmavuotojen maarittamisessa.

The first part of the study describes thermography generally as a method for non-destructive testing of a building envelope for thermal and air tightness properties. The study has resulted in a two stage testing method of which pressurizing is an essential part. The field study has shown that thetwo-stage method is suitable in detection of air leakages, showing that the major part of thermal defects in the building envelope are due to air leakages.