LoginThe book of proceedings of the 9th International BUILDAIR Symposium "Airtight Buildings, Thermography and Ventilations Systems in Practice", held on 8-9 May 2015 in Kassel, Germany. Contains 18 abstracts.
BUILDAIR Symposium 2015
This page lists the Proceedings (titles and abstracts) of the 9th International BUILDAIR Symposium, held on 8-9 May 2015 in Kassel, Germany.
Contains 18 titles and abstracts.
Volume content
After long, controversial discussions, the main Swiss standard on thermal insulation and airtightness, SIA 180, was finally amended in summer 2014. In addition to changing the permitted limits to the envelope-area value of q50, it also gives some indications as to the airtightness design and its implementation in planning and construction...
Stricter requirements, e.g. for thermal insulation and moisture protection, as well as progression in energy-efficient building have led to the development of special building materials and metrological equipment. Over the last two decades, airtightness measurements, frequently also called “BlowerDoor tests”, have become increasingly...
Wooden flat roofs are being increasingly constructed without the tried and tested sub- ventilation layer of the sealing sheet. However, some regulations refer to the high risk of damage to such structures if the sealing on top of the insulation is largely vapor proof. This research was to analyze whether more recent recommendations...
The German Industrial Standard DIN 4108-7 has been the standard to stipulate the requirements as well as recommendations for planning and implementing airtight construction for a long time (since 2001). However, the principles of airtight building have not yet been well established in general building practice...
In order to achieve the most accurate and repeatable – and therefore comparable – measuring results possible when testing the airtightness of buildings, you need testing devices that are able to measure with a level of accuracy adjusted to the intended purpose. If the users want to guarantee the accuracy of the measuring devices, they can...
To review the impact of air tightness testing in construction in Ireland since the introduction of mandatory testing under the National Building Regulations in 2008 and the subsequent enforcement of a National Certification Scheme. Review of National Building Regulations in 2008 & 2011 and implications on buildings being...
There is a draught, so what? Robust, tried and tested solutions ‒ Airtightness designs of structural elements and building components | 2015 | English
Proposals for solutions in accordance with German standard DIN 4108 Teil 7 What does real life look like? What can actually be solved? Challenges, interface issues between the different trades and crafts, and possible suggestions for solutions. The industry-wide educational and training center of the Baden-Württemberg...
Infiltration through leaks? A careful analysis of minimum air change according to DIN 1946 | 2015 | English
Can the minimum air change in naturally window-ventilated units be covered only through leakages? In general, the infiltration airflow rate is dependent on meteorological conditions, especially wind pressure on the building / unit, and with regard to thermal effects, the temperature differential between the interior and the exterior...
From “16 to 1“ ‒ Retrofitting airtightness of roofs in existing buildings from the inside | 2015 | English
Many top-floor apartments and single-family homes from the ’80s and ’90s had been insulated in the roof area using aluminum-clad panels or PE foils and had frequently been covered with profiled wood. These buildings suffer from a significant lack of airtightness that can be retrofitted from the inside with a high technical quality...
Building rehabilitation with passive house components Airtightness and „EnerPHit Standard“ | 2015 | English
Several rehabilitation projects of apartment buildings all used passive house components, but implemented different airtightness designs. Two projects (24 and 52 apartments in Ludwigshafen and Frankfurt am Main, respectively) were carried out in the traditional way, using the interior plaster in the area of the external walls...
Repeatability and reproducibility of blower door tests ‒ five years experience of round-robin tests in the Czech Republic | 2015 | English
The airtightness test result is typicaly compared with a limiting value (compliance check), with the results of other tests of the same object by the same technician (when controling the evolution of airtightness during construction process) or with a test result of another technician (when verifying a suspicious result). These tasks need a...
Evaluating the airtightness of the building envelope using infrared thermographic measurements | 2015 | English
This paper discusses laboratory measurements on a small test house. IRT measurements and (de)pressurization tests were performed on different types of junctions, e.g. at the window-wall interface. The results were analysed by calculating the temperature factor, to compare IRT images from different joints...
Airtight, not completely airtight, not airtight at all. How (in)tolerant is the legal definition of flaw? Observations on the legal assessment of “structural tolerance” and possible related misunderstandings | 2015 | English
When it comes to evaluating the quality of building work, technical and legal perspectives often clash. This is probably particularly true when it comes to evaluating the airtightness of building envelopes. This presentation is an attempt at clearing up frequent misunderstandings and at formulating questions that would help to...
Using guard-zone pressure for the detailed measurements of leakage flows in large buildings | 2015 | English
It is easier for large buildings to meet the requirements of airtight construction than for small buildings since the proportion of internal air volume to envelope area is more favorable. In large buildings, typical leakages,also found in single-family homes, bear a higher risk. The lift and driving forces for leakage flows are stronger. In addition, building...
In 2008, our trade association, “klimaskaerm” (comparable with FLIB e.V.), started a voluntary certification system in collaboration with Danish Standard. The system costs about 4500 euros per year, and was never very successful; only 3 companies were certified from the start. In 2013, we changed the agency to BK, which could provide...
In Belgium, airtightness of buildings is taken into account in the regional Energy Performance of Buildings (EPB) regulations. When measured, it can be used in the calculation in place of a default unfavourable value and therefore improve the calculated performance. Supplementary specifications to the European standard...
Condensation risks in wooden building components are mainly caused by water vapor penetrating the cross section of the component through airflow. Even small pressure differentials result in a lot more vapor flowing through a joint of only a few millimeters than that which would migrate by diffusion through many more undisturbed square meters of area...
Based on an application for standardization by the company ISOVER in October 2007, the German Industrial Standard DIN 4108 – 11 has been cleared by the responsible bodies in DIN for review by the committee NA005-56-93AA, “Airtightness”. The work on the details of the standard has been going on for seven and a half years now...