Passivhaus Masterclass Training

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Our Role: Delta Q co-presented two sessions for the Large & Complex Masterclass series in 2024 run by the Passivhaus Trust.

The masterclass sessions covered:

Airtightness and air testing of large multi-residential blocks

Air tightness design and air testing of large multi-residential blocks presents a number of design and practical challenges, especially in locations where planning requirements require building emission rates to improve upon Part L, such as within the Greater London Authority region. As Delta Q we presented our experiences of defining the thermal envelope, choosing compartments for pressure testing, co-pressurisation tests, air tightness requirements for individual dwellings, interim testing and final testing including tall buildings. If these aspects are not carefully planned out before construction, testing and air tightness costs can spiral. We co-presented this session with Paul Jennings from Aldas.

Thermal bridging – strategies and insights for large concrete frame buildings

Thermal bridging contributes significant heat loss which results in uncertainty during the design development of concrete frame buildings. At the same time thermal bridge modelling can become a high cost design activity, with frequent update requirements. We shared our advice on strategies for risk mitigation at early stage design,  λ- and ψ-values we have calculated for different situations and presented some general observations from our 2D and 3D thermal bridge modelling. We co-presented this session with Will South from Etude.

The masterclasses are available on demand from the Passivhaus Trust here.lighting the relevance of the content and its practical application to their projects