1 Scandinavians are serious about their green roofs. They’ve had them for a while now and it doesn’t look like they’re going anywhere. They even have a competition every year to determine the best green roof project in Scandinavia by the Scandinavian Green Roof Association! But there is a reason why Scandinavians like these green roofs so much… They are not only a beautiful feature for a house, but they also offer numerous social, environmental and financial benefits. They absorb rainwater, reduce winter heating costs, reduce summer air-conditioning costs, provide insulation, and are long lasting – just to name a few.