Extensive Green Roof Systems – Utilized when your purposes for a green roof are primarily environmental and economic, this lightweight “thin set” roof garden is comprised of organic and inorganic materials and specially selected hardy, low-maintenance plants. The most common type of rooftop garden, an Extensive Green Roof is a vegetated roof which adds a low weight increase of only 16 – 35 lbs/square foot when fully saturated. After installation, planting, and maintenance the first year, ongoing maintenance typically consists of only two visits per year by green roof applicators to weed invasive plant species and to conduct safety and membrane inspections.

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