Sedum Green Roof What is a green roof

Sedum Green Roof What is a green roof

What is a Green Roof? Why Sedum?

Green roofs and walls have existed throughout the world for centuries. Recent worries about sustainability, climate change, our carbon footprint and economic issues have meant that we are witnessing a growing interest in this form of green roofing wall coverage. There are many types of Green Roofs or Walls that we can supply from the simple Sedum plant roof in our green roof systems to the wild life roof garden, or exhibiting your logo on the roof of office buildings. In the future we would hope to see many more of these types of green roof, replacing the traditional tiled roof. We are happy to offer a wide degree of service from simply helping you choose the correct plants to actually building/adapting your roof or walls for this form of coverage.

Green Roofs

The word Green Roof has come to describe a roof which is green in the economic sense. In other words it is energy efficient or sustainable. It has many different names such as a living roof, biodiverse roof, Sedum roof, brown roof, eco-roof, grass roof, turfed roof, etc. Basically, it is a living roof which is placed on a building instead of a conventional roof. There are various components that are necessary plus the main structure of the building must be tested before any attempt to put a green roof onto a large expanse of roof. There are numerous benefits surrounding green roofs including, helping to control water in areas of flash flooding as it absorbs more water slowing the release of rainwater. It can be used as a filtration method capturing the run off water and using it for other uses such as brown water (flushing toilets etc). Experiments have shown that a green roof such as a Sedum Roof can help both with insulation during colder months and a cooling effect during hotter times. One of the main and most popular reasons for having a green roof, whether it be on your house, shed or garage is that it will increase the biodiversity of wildlife including insects and birdlife. This makes it so much more attractive to look at than a conventional tiled roof. A green roof will also filter pollutants in the atmosphere especially carbon dioxide, lowering the carbon footprint but also helping lower disease rates such as asthma. If all the roofs in London had green roofs the air would be far cleaner.

Financially it can increase the roof life considerably and nowadays goes a long way to even increase the real estate value of your property. There are sometimes local tax incentives which may help but certainly in the Uk the local councils are very keen to promote the use of Green Roofs and sometimes will not pass building permission until a percentage of the roof is a green roof.

Different Methods of Production of a Green Roof

Intensive Green Roof — A variety of plants and trees are grown for recreational purposes. Some maintenance is required. These roofs require a reasonable depth of soil and grow quite large plants, even trees. Often this type of roof is known as a "Roof Garden" and will require irrigation, feeding and is fairly labour intensive. Often found on hotel roofs.

Extensive Green Roof — Here there is a shallower layer of substrate planted with low growing species such as sedum, mosses or types of grass. This system requires minimal or no maintenance. The only real maintenance would be a once yearly feed in the early days and possibly some weeding if necessary although once established the plants tend to form a dense blanket like covering which deters the weeds. This type of living, eco roof can be established on a very thin layer of soil and usually has only either grasses, wild flowers, sedum or mosses.

Semi-extensive Green Roof — Slightly greater depth of substrate allowing greater diversity of plants and again low maintenance.

Green roofs can be grown on most pitches of roof, even on vertical walls to make an attractive green wall.


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