LiveWall LiveRoof<sup>®</sup> Licensed Grower

GREEN ROOF BASICS

This is why sedums are such an ideal green roof plant – they adapt to hot, dry days and cool nights, and are incredibly efficient at water conservation. Many have evergreen ground cover characteristics, and provide erosion control even in the winter. They thrive in shallow depths and are naturally fire resistant.

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Green Roof Considerations (continued):

The depth of the soil layer will be determined by the maximum weight a structure can bear.  Intensive green roofs have a soil depth of over 6” that can support larger plants with deeper roots.  Extensive green roofs have a soil depth up to 6”.  The LiveRoof® modules offered by Roof Top Sedums create green roof systems at 2.5”, 4.25”, 6”, and 8" soil depths.  Soil depths in green roofs of 4” maximize green roof benefits at the least cost.

Green roofs must maintain their original soil depth for the lifespan of the green roof, which can last for 50+years. Lightweight and organic soil components can break down and decompose over time, which can lead to wind erosion and a decrease in soil depth.  LiveRoof® Engineered Green Roof Soil conforms to the German FLL granulometric green roof soil standards and is formulated to prevent loss of soil depth for the life of your green roof.

Green roofs that are not fully vegetated have exposed dark soil that heats up in the summer, inhibiting plant growth and reducing the cooling benefits of a green roof.  Green roof benefits cannot truly be maximized until the entire soil surface is covered with plant material. 

Green roof plant material must keep the roof surface cool, control soil erosion caused by rainfall and wind, be drought tolerant and fire resistant, have non-aggressive root characteristics and be able to survive in shallow soil depths.  

This is why sedums are such an ideal green roof plant – they adapt to hot, dry days and cool nights, and are incredibly efficient at water conservation.  Many have evergreen ground cover characteristics, and provide erosion control even in the winter.  They thrive in shallow depths and are naturally fire resistant.

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