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The air permeability and watertightness of facades can be checked on site. For this purpose, an architectural airtight test chamber is installed on the inside of the facade in accordance with a quality specification drawn up by us. A pressure difference is created in this box relative to the outside, and the volume flow required to maintain this pressure difference is measured. The facade is sprayed evenly on the outside.
Air tightness can also be assessed using infrared thermography, provided that a pressure difference relative to the environment can be created using the building ventilation system. This technique can be used to reveal any air leaks and thermal bridges.
In order to build more energy-efficiently, we try to minimize unwanted heat loss. This is achieved not only through good insulation, but also by ensuring that no heat or cool air escapes through cracks and seams in the building. For this reason, energy performance calculations and BREEAM-NL credit ENE 26 set requirements for the airtightness of buildings. Air tightness is also important from a comfort perspective, to prevent draughts and ensure that the ventilation system works properly. This should not be dependent on wind pressure on the building.
We have measuring systems that allow us to determine the air tightness of both houses and apartments as well as large halls and distribution centres. We usually perform these measurements in combination with infrared thermography and smoke tests. This allows us to detect any air leaks. Our certified specialists have been doing this for a long time. We also advise during the design phase on the measures that can be taken to make a building sufficiently airtight.
