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Skyland USA develops green roof soil.

Article Excerpt
Skyland USA LLC produces the only branded green roof media--rooflite[TM]--available nationwide for the green roof industry. Green roofs have been around for centuries in some European countries. The modern green roof movement started in Germany in the 1960s, and is gaining notice as government officials tout sustainability initiatives.

Green roof systems can reduce heating and cooling costs, increase the life span of a traditional roof, reduce storm water run off, filter pollutants and carbon dioxide, insulate for sound and can be used to grow trees and gardens. Green roofs are used in place of conventional roofs and require a specialized roofing system. They are installed most often on warehouses, big box stores, college and university buildings, museums and government structures.

There are two basic types of green roof systems. One is a built up system. As with a conventional roof design, a waterproof membrane is first placed on the roof surface. Next a drainage layer, then a filter cloth and finally the lightweight growing medium and plants are applied. The other is a modular system whereby the modules are filled with growing media, planted and grown out on the ground prior to placement on the roof.

Each system has its pros and cons. There are three basic types...

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