![]() The metered release of water allows plants ample time to uptake water and nutrients from the growing media without sitting in standing water. The ridge and trough design promotes the airflow necessary for plant growth and root health by preventing overly saturated media. Stormwater management. Ridges and troughs at the base, capture and slowly release peak stormwater flows via a specific pattern of small drain orifices.The complete, elevated extensive green roof system uses patented interlocking and overlapping green planter trays that are supported by a fiberglass grid laid over adjustable height pedestals, allowing porcelain, concrete or stone pavers to be easily incorporated in the overall design and set to any desired height relative to the planter trays.Įach function of a layered green roof system is incorporated into the tray system, eliminating the need for separate drainage mats, water retention mats, root barriers, and filter fabric, but ensuring superior stormwater management and ease of installation. minimizes weight loading – just 2.5 – 4 lb/sq.ft.water drains freely via the open grid structure.allows space for irrigation pipes under the plantings.superior wind uplift protection – interconnected panels create a continuous surface. ![]() large panel size (typically 4′ x 8′) ensures much faster installation.Some of the other benefits of using fiberglass grating panels to elevate and support an extensive green roof tray system include: Expanded polystyrene (EPS) foam is combustible and labor-intensive to install while concrete pavers are extremely heavy and may exceed roof loadings with filled planter trays. The fiberglass panels not only provide a solid base for the planter trays but can provide support for pavers set among the plantings – porcelain, stone or concrete. But in many cases, there’s a need to elevate the planter trays to cover service pipes, electrical conduits and surface irregularities, to raise the plantings to match the height of paved areas, or to correct for the slope on the rooftop.įiberglass grating panels supported by adjustable height pedestals undoubtedly offer the most effective and versatile means of supporting raised planter trays. ‘Extensive’ green roofs are typically defined as having growing media less than 8″ deep, use small, low-growing plant species such as succulents, and require minimal maintenance with relatively low water needs.Ī modular tray system filled with 4 inches of growing media and plantings is generally the simplest and most versatile means of creating an ‘extensive’ green roof.
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