Summer comfort strategy
The RIBA Passivhaus Overlay, published by the RIBA in 2022, states in relation to the summer comfort strategy: ‘The Passivhaus Trust recommends all projects go through a summer comfort risk assessment and stress testing, following the guidance in Avoiding summer overheating and making use of the free Passivhaus Trust PHPP plugin as well as stress testing in PHPP10. For dwellings PHPP analysis is usually adequate. For larger and/or more complex buildings overheating risks should also be assessed with supplementary dynamic modelling in accordance with boundary conditions required by the Passivhaus Certifier. This may include CIBSE TM52/ CIBSE TM59.’
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