Moisture-resilient upgrading to blue-green roofs

Increasing rainfall will in the future result in a higher risk of flooding. The reduction in absorptive area in the cities will cause a higher pressure on the existing sewer system. Establishing of bluegreen and bluegrey roofs are expected to have a positive effect to these challenges. Klima 2050 has developed a guidance of how to rebuild an existing roof to a bluegreen or bluegrey roof including necessary measures to be taken at different stages in the rebuilding process. 

Read the guidance here (in Norwegian).

Scientific basis