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Blower-door test
Air-tightness of buildings: blower-door test
Windows, doors or ventilation systems are provided to ventilate buildings. Unfortunately, indoor air also escapes through openings caused by construction defects, such as joints and connections. Components in the roof that are not tight also cause an uncontrolled air exchange.
With the blower-door test, the differential pressure measuring procedure for buildings, we can use overpressure and underpressure to check the air-tightness of buildings, locate leakages in the building shell and determine the rate of air exchange.
With minimal outlay, the blower-door test is the authoritative procedure recognised by the law-maker for checking professionally that the building shell is designed to be leak-tight, in line with the Energy Saving Ordinance(EnEV).
Many benefits speak for the test: Draughts are prevented, sound insulation and living comfort are increased, energy consumption is decreased, and condensation build-up, moisture damage and mould formation on components are prevented.
What sets us apart?
We help you to avoid consequential and renovation costs in your construction plans.
Our many years of experience mean that we are experts in competent consulting, assessment and construction monitoring when it comes to the ventilation and leak-tightness of buildings.
Which services do we offer?
- We will perform a comprehensive blower-door test for you. In doing so, we will draw up a measurement report and leak-test certificate, and document the leak locations.
- On your request, we will draw up suggestions for renovations and improvement in conjunction with our construction experts.
- We will advise you on procedure in the event of construction defects resulting from insufficient leak tightness.
What standards and legal regulations form the basis of our work?
The regulations of the blower door test are governed in DIN EN 13829.
Further relevant regulations include the Heat Insulation Ordinance, DIN 4108-7 (air-tightness of components and connections, recommendations and examples for planning and execution) and EnEV (Energy Saving Ordinance).
In the German Federal Gazette no. 140 from 31st July 1998, the Federal Ministry of Transport, Building and Urban Affairs declared DIN 4108, part 7 the "rule of good technological practice" for the purposes of §10 of the Heat Insulation Ordinance. This makes the blower-door measurement the prescribed procedure.
Contact:
Our experts are glad to answer your individual questions at any time. Just send us an e-mail by clicking on the contact box (top right).