Begrünungsdächer

Begrünungsdächer, also known as green roofs, are building roofs that are partially or completely covered with vegetation. This vegetation is planted over a waterproof membrane which also contains root barrier, drainage, and irrigation systems. Green roofs are a form of sustainable construction, offering a range of environmental and economic benefits.

There are two main types of green roofs: extensive and intensive. Extensive green roofs are lightweight, require minimal maintenance, and are typically planted with sedums, herbs, and grasses. They are often found on larger buildings or where structural load is a concern. Intensive green roofs are heavier, require more maintenance, and can support a wider variety of plants, including shrubs and even small trees. These can be designed as accessible garden spaces.

The benefits of green roofs are numerous. They help to insulate buildings, reducing heating and cooling costs, and also mitigate the urban heat island effect by absorbing solar radiation and releasing water vapor. Green roofs can improve stormwater management by absorbing rainfall, reducing runoff and the burden on drainage systems. They also provide habitats for biodiversity, supporting insects and birds in urban environments. Furthermore, they can extend the lifespan of the roof membrane by protecting it from UV radiation and extreme temperature fluctuations. The aesthetic appeal of green roofs is also a significant advantage, contributing to more pleasant urban landscapes.