Constructed Wetlands

Blumberg Engineers

Ingenieurbüro Blumberg

Gänsemarkt 10
D-37120 Bovenden
Germany

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Wetland roofs  

Marsh plants on roof – Nature experiences on the privacy of one’s home


The construction of a marsh plant roof improves the life style of one’s home.
It combines aesthetics and functionality in form of a piece of nature, purifies wastewater and water and is used as natural air condition with a minimum of costs.

Marsh plants will be cultivated on textile stuff (fleece) and afterwards hollowed on roofs. The shape and incline of the roofs is not important. After the plant mats are installed on roof, there is an area – wide planting vegetation. The effect is the retention of rainwater and thus e.g. releases the sewerage system.

The roots of the plants absorb the nutrients of the water by using them for their growth. Marsh plants on roof are able to filtrate suspended substances out of the air.

Marsh plants on roof are not just used for the retention and purification of rainwater but also of various waste water types, for example municipal, commercial, agricultural and industrial waste water.

Another positive effect of wetland roofs is the protection of the roof skin against climatic extremes. Thus the lifetime of the roof will be prolonged.

The term ‘natural air condition’ is in this case appropriate. This effect can be observed in the experimental station of the German Federal Agricultural Research Center in Braunschweig.

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