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Accurate airtightness testing
equipment: the Blower Door

The Blower Door unit effectively tests the airtightness of the construction.

It is easy to use and fits into any external door of your home or building. It can be used on existing buildings for air leakage testing, or on new builds to test the seal of the completed INTELLO installation before the plasterboard is attached.

Finding air leakages as a result of air pressure measurement testing

Measuring an existing building’s airtightness or checking a new build’s airtightness after installation of INTELLO is done by generating a gentle vacuum in the house through the Blower Door fan or 50 Pascal (similar to a wind loading of a moderate breeze on the building).

The fan measures how much air is being removed to keep the pressure difference at 50 Pascal. It is then possible to find the air leakage points in the building envelope.

Finding the air leakage points is done by several methods:
feeling airflow by hand
using a Thermoanemometer
using a hand-held smoke puffer
or the use of an infrared camera (ThermaCAMTM B2).
The Blower Door has proven itself in everyday measurement applications, and is automatically controlled from the DG-700 pressure gauge – you just monitor the readout of the measured results on the screen. Using these results, the Tectite Express software generates a complete test report in accordance with EN 13829.

Any building size can be effectively tested for airtightness

Whether you have an energy efficient house or an old office building, the Blower Door can measure airtightness. The unit has an output of from 35 to 7200 m3/h, and by combining several Blower Door units in parallel, even the largest factory or sports centre can be tested.