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This study identifies building technical challenges when upgrading roofs and rebuilding them as blue-green roofs in Nordic climate. Identification of challenges were done through several steps – a literature study, interviews with architect, contractor, consultants, researchers and property developers, in addition to a case study of two existing roofs in Oslo and two at NTNU. This paper presents a process model for ensuring an early focus on building technical challenges and moisture-resilience when upgrading to blue-green roofs.
Skjeldrum et al. (Sun,) studied this question.
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