There are two ductwork airtightness databases that are often discussed in literature [1]: the French database from CEREMA: this database was created in 2016, it includes all the tests performed in France by a qualified tester in a regulatory or … Continue reading →
Eurovent Certita Certification have a certification programme for rigid and semi-rigid ventilation ductwork systems divided into the following sub-programmes: Rigid metallic ductwork systems with circular cross-section (DUCT-MC); Rigid metallic ductwork systems with rectangular cross-section (DUCT-MR); Semi-rigid non-metallic ductwork systems predominantly … Continue reading →
Good building airtightness is achieved in 3 steps: Plan – Build – Check. The building airtightness requirement is defined in the design phase of the building. The fundamental principle for designing good airtightness is to specify a combination of materials … Continue reading →
In most European countries the building preparation is based on ISO 9972 requirements. However, the interpretation of these requirements may differ from one country to another, and based on different building preparation rules. Building preparation errors are probably the dominant … Continue reading →
TightVent Europe has published a list of applicable standards for building and ductwork airtightness. The detailed list can be found here. The graph below shows ductwork airtightness standards in relation to the design and construction process. Ductwork airtightness standards in relation … Continue reading →
Airtightness durability is a growing issue in Europe and the US. In the long-term, it seems that some specific sealing products have durable performances but on-site studies have shown that many factors can deteriorate the airtightness durability of wall assemblies … Continue reading →
TAAC is the TightVent Airtightness Associations Committee, launched in September 2012 by the TightVent Europe platform, with the primary goal to bring together national associations and experts in order to promote reliable testing/inspection and reporting procedures. The scope of TAAC … Continue reading →
France, Belgium (Flemish Region) & the United Kingdom have national databases that gather most of measurements performed by qualified testers in their countries. Other initiatives also exist in Spain, Germany, Czech Republic, Estonia, Canada and the US ([1], [2], [3]). Spain … Continue reading →
Building airtightness (also called envelope airtightness) is a general descriptive term expressing the resistance to inward or outward air leakage through unintentional leakage points or areas in the building envelope. This air leakage is driven by differential pressures across the … Continue reading →
Ductwork airtightness can be defined as the resistance to inward or outward air leakage through the ductwork shell. The limit values for the maximum air leakage volume flow in duct systems are defined in the 4 tightness classes A to … Continue reading →
