Alleviate Flooding
Following a heavy rainfall a green roof will initially retain more rain than a conventional roof. This minimizes the initial heavy runoff, which can cause localized flooding and put pressure on the sewage system. The remaining water then drains off more slowly, allowing more rain to remain in the natural water cycle and less in the sewage system.
Noise Reduction
The soft layer of sedum blanket growing on a green roof has the affect of absorbing sound, as opposed to hard conventional roofs which can reflect it. In an already noisy urban environment this is certainly beneficial. The same layer improves the buildings sound insulation properties, reducing sound pollution within the building.
Thermal Insulation
The addition of a green roof layer to a property increases its thermal insulation properties, making it warmer in winter, cooler in summer and reducing energy costs.
Natural Habitat for Animals and Plants
Green roofs can help compensate for the loss of green surfaces, sacrificed to building developments. This helps to provide an environment for the development of wildlife, especially bird, plant and insect life, increasing the biodiversity in our towns and cities.
Improving Building Aesthetics
The clever use of a green roof can help a large and small buildings blend into a surrounding green landscape, minimizing the impact it has on the immediate environment. Green roofs can be used to soften ugly flat roofs on extensions, garages, sheds etc. helping them blend more easily into their surrounding environment. Where a building is located in a more urban landscape, the addition of a green roof can introduce a very welcome green interlude in a heavily built up area, where green spaces are few and far between, substituting in some way for the loss of a previous greener landscape.
Perennial Sedum plants have been one of the best choices for green roofs due to the fact that it is an extremely adaptable plant. Its special properties include:
Low Maintenance once established sedum forms a tightly knit sedum carpet, which allows little room for the development of weeds and can be left largely unattended. This makes it perfect for use on sedum roofs.
Low Growing sedum is a low growing plant, which generally reaches a height of 2 inches to 5 inches (up to 12 inches when in flower). It does not become overgrown and does not require regular cutting or pruning ideal when used on a sedum roof.
Colorful Hues by mixing a number of different varieties of sedum together as in this Sedum Roof Garden Mix, the sedum turf will have a beautiful mix of colors (greens, yellows, reds and purples) and textures. As an evergreen it continues to provide a changing display of color throughout the winter months. When used to create a sedum roof it will provide a beautifully changing display throughout the year.