Know how

We have the technology!

We make the invisible visible. With a system. Because there are many sources of error and risks in the construction of large housing estates and industrial buildings. Put your trust in our many years of expertise in detecting leaks and conducting blower door tests.

Your advantage: You spare yourself unnecessary stress with investors and building owners.

Airtightness
planning

Only an airtight building can guarantee a pleasant and even indoor climate. Clear planning of airtightness can later be implemented airtightly by the trades carrying out the work. We provide you with reliable support from planning to realisation.

 

Infrared
thermography

What is building thermography? A method for visualising heat radiation. Leaks in the building envelope can be detected using a thermal imaging camera as a stand-alone examination or at the same time as the blower door test. Thanks to modern infrared measurement technology, we can identify weak points even in places that are difficult to access.

 

Quality
assurance

An airtight building envelope prevents draughts and unpleasant odours, increases soundproofing and reduces energy costs. This is why the planning of airtightness belongs in experienced hands. We provide you with reliable quality assurance with the help of blower door tests, leak detection and the corresponding test report for your building.

 

Special measurements

Fog test

We use the fog test to detect even the smallest leaks. Using the Minneapolis Blower Door System, an overpressure is generated in the area to be tested and our modern fogging devices are used to test individual areas or entire rooms along the various flow paths. Possible leaks are also detected in places that are difficult to access.

Door Fan test

With this room tightness test (door fan test), we check whether your rooms are suitable for the installation of a gas extinguishing system or an inertisation system. These systems prevent a fire before it starts. These valuable findings make fire protection planning and subsequent commissioning of such systems easier for you.

Holding time calculation for gas extinguishing systems

The measurement data from the door fan test is required to calculate the holding time of an installed gas extinguishing system. In most cases, it is not necessary to carry out a test flooding in your building and thus disrupt the construction site process. Our proven holding time calculation in accordance with DIN EN 15004 / ISO 14520 gives you as the operator of gas extinguishing systems peace of mind.

A-value measurement

In order to easily and accurately determine joint permeability on XXL-sized building components, we test all connection joints using the patented A-value system from Blower Door GmbH. This joint tightness test of component openings is now mandatory in order to fulfil the requirements defined in DIN 4108-2. During the calculation, the joint permeability coefficient of the connecting joint between two building components is determined. This ensures that you avoid draughts near windows and doors.

Radon Rn50 test

Sometimes air containing radon penetrates the building and increases the radon concentration indoors. Some building materials and water can increase this effect. Radon increases the risk of lung cancer in humans. We measure the radon ingress rate using negative pressure and determine the expected annual average concentration. For guaranteed safety right from the start.

Bau.tools blower door test

This test method, which can be used all year round, enables precise localisation of leaks and air leakage using blower door and thermography. Even the smallest temperature differences can be quickly localised and visualised. Thanks to the patented sequence analysis, defects in the building envelope are reliably detected.

Leak test: System floors

Uncontrolled air ingress in lecture theatres, conference or training rooms quickly leads to discomfort, unwanted noise and heat loss. In these cases too, our experts take measurements in accordance with DIN EN 13829 and professionally identify possible leaks in the system floor.

Leak test: ventilation ducts of air conditioning systems

The energy efficiency of a ventilation system depends to a large extent on its tightness. We reliably detect leaks in HVAC systems with the leak test in accordance with DIN EN 12599. It should be carried out as early as possible in the construction phase in order to avoid uncontrolled air ingress and contamination in clean rooms, laboratories and containments.

Leak test: fire protection doors

Are you planning economic refurbishment measures for existing fire doors? We can carry out your leak test in accordance with DIN EN 13829 or ISO 9972. The Blower Door differential pressure method, which we use to determine the leakage rate Qd, is also groundbreaking here.

Request a free quote now!