green roof installation

Finished sedum roof

There has been a bit of a pause in the postings to this blog, mostly because we are busy decorating, which is a little boring to do, let alone write about. One thing that we have had done lately is the sedum roof over the extension and the porch.

The sedum layer has been laid by the original single-ply roofing installer, who now specialises in sedum and wild flower roofs. Before the sedum is laid, a geotextile membrane is laid on top of the water proof layer of the roof and the sedum drainage layer is placed on top as shown in the photo below. The drainage layer is made from recycled plastic and also contains a network of cups to store water and keep the sedum happy during dry weather. The organic substrate is applied on top of the drainage layer and the sedum is rolled out across this.

Drainage layer Substrate layer

The sedum was installed about three weeks ago now and has taken well (thanks to the break in the dry weather). The addition of the sedum roof should offer a number of benefits, which include: extending the roof life (less exposed to UV); reduce summer overheating in the studio space below; and reduce surface water run-off. Most of all it looks great.

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