By protecting the roof membrane however a green roof can extend the life of a roof by two or three times beyond its typical lifespan.
Green roof lifespan.
Green roofing can extend the lifespan of a roof by over 200 by covering the waterproofing membrane with growing medium and vegetation this shields the membrane from ultra violet radiation and physical damage.
30 to 50 years is not an unusual lifespan for green roofs in europe.
In europe where they have been building with green roofs since the 1960s green roofs have been known to last for from 30 to 50 years.
How long will my roof last with a green roof.
A properly installed and maintained green roof should extend the life of the roof 2 3 times its normal life.