These new thin-edged modules are the 4th generation of GreenGrid®, keeping the functionality of the original modular vegetative roof system, but adding a more aesthetic seamless look, enhanced design versatility, and maximized stormwater retention.
GreenGrid offers versatility and design flexibility, with modules available in three different depths for a variety of planting options. Modules can be pre-grown at our nurseries to meet plant coverage specifications up to 95% and delivered to the job site to create an instant mature vegetative roof. This translates to a successful vegetative roof with less up-front maintenance, plus a beautiful look from day one. In addition, GreenGrid modules can be custom cut to fit any roof layout.
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Features & Benefits
- Easy Roof Maintenance & Repair
- Quick & Easy Installation
- Nursery Pre-Vegetated
- Designed by Team of Professionals
- Seamless Modular Aesthetics
- Durable Material Construction
- Roof System Compatibility
- Customizable Modules
- LEED Credits
- Integrated & Controlled Water Retention
- Integrated Irrigation Capability
This item may have many variables and could be considered a custom ordered item. Please contact your local distributor or Mule-Hide Products for more information.
What makes GreenGrid different?
GreenGrid remains modular for the life of the product. With no edging requirements, it is simple to install and provides an instant vegetative green roof on day one.
How does a module drain excess water?
The bottom of a GreenGrid module uses a waffle-pattern design with drainage holes and water retention cups to contain some excess water for the plants to draw from in time of drought and for stormwater storage. When the retention cups are at capacity, water drains through the raised drainage holes through the drainage channels.
What is the best application for GreenGrid and/or modular?
GreenGrid is most effective on flat roof surfaces (maximum slope of 1:12) using the largest continuous roof area. It can also provide green space for roof decks and accessible terraces. Slightly higher slopes up to 2:12 are feasible but may require additional engineering controls.
How do I incorporate hardscape (i.e., benches, walkways, etc.)
GreenGrid modules can be placed on top of or next to pavers to create walkways, patterns, or designs. Benches can be integrated the same way. To make pavers level with modules or roof slopes, use shims to achieve the desired height.
What do I do around penetrations and perimeters?
Because GreenGrid is fully modular, there is no need to install edging or drain boxes around penetrations and perimeters. Modules can be placed as close to the penetrations as desired and empty space can be left open for easy access or be filled with river rock for aesthetic effect. Around the perimeter of the roof, SPRI and FM Global recommend leaving a buffer of 8.5’ to ensure that wind uplift does not occur.
Does it attract wildlife? (Birds, bees, butterflies)
In general, the plants used on vegetative green roofs attract bees and butterflies for pollination, increasing overall biodiversity for the area and providing natural corridors for various species.
What happens in the winter?
The plants will go dormant during the winter and shrink slightly unless evergreen varieties are chosen. All varieties will return in the spring.
Does it work in the shade?
Specific plant varieties can be chosen to accommodate for partially shaded roof areas. There is more room for native varieties to be used in shade, which also may require specialized growing media. Fully shaded areas are not recommended.
What is the rate of installation?
Between 3,000 and 6,000 sf of GreenGrid modules per day can be installed using a crew of 6 to 8 people.
Do the modules interlock?
The modules sit directly next to each other and using universal alignment notches on each side to ensure a tight fit. Modules can be zip tied together if wind is an issue.
What level of maintenance is required?
We recommend six events per season: two major and four minor. A major event is widespread weeding, fertilizer application, replanting as necessary, and plant health evaluation. Minor events include spot weeding, watering as needed, and plant health evaluation. After about 2 years, maintenance requirements decrease significantly, but should not be stopped completely.
Are all vegetative green roofs the same?
There are different types, styles, and depths to consider for a green roof. Modular, built-in-place, or hybrid are the predominant versions of vegetative systems, and ultra-extensive, extensive, semi-intensive, and intensive are the main depth categories, ranging from 2.5 inches of soil media to 2 feet or more.
What if I have a leak?
The beauty of the modular system allows for easy removal of the overburden layer without disturbing plants or layers. The modules can be moved to another area until the repair is completed, and can then be placed back into position. Compare this to the excessive work necessary to excavate and uncover the waterproofing layer in hybrid and built-in-place layered systems.