Luftdichteprofile

Luftdichteprofile, also known as air leakage profiles or airtightness profiles, are graphical representations used in building science to illustrate the distribution and severity of air leakage within a building envelope. These profiles are typically generated from data obtained through blower door tests, which measure the overall airtightness of a structure. By employing techniques like smoke pencils, infrared thermography, or tracer gas measurements during the blower door test, specific areas of significant air infiltration or exfiltration can be identified and quantified.

The horizontal axis of a luftdichteprofil often represents a cross-section or plan view of the building envelope, indicating locations such as wall junctions, window and door frames, penetrations for pipes and cables, and roof-wall interfaces. The vertical axis or graphical element associated with each location typically indicates the magnitude of air leakage. This can be represented by color-coding, bar charts, or contour lines, with warmer colors or larger graphical elements signifying higher rates of air leakage.

Understanding luftdichteprofile is crucial for diagnosing and addressing building envelope performance issues. High air leakage can lead to increased energy consumption due to uncontrolled heat loss or gain, reduced indoor air quality from the ingress of pollutants and moisture, and potential structural damage through condensation. By pinpointing the weakest points in the airtightness, building professionals can implement targeted sealing and weatherstripping measures to improve the building's overall energy efficiency, comfort, and durability. These profiles serve as a valuable diagnostic tool for building diagnostics and retrofitting projects.