In addition, intensive Green Roofs often include landscaped areas with variations in heights. As a result, an entire environmentally friendly intention of the idea wiped out. Geofoam has no benefits for plants and soil biology. Actually it is even banned in many countries worldwide, because of it's hazard for the environment, health and instability. Besides, Geofoam interrupts natural water and nutrient cycles on Green Roofs, reduces valuable rooting space, and offers cozy homes for rodents.
Green Roof Technology never used Geofoam for the reasons above and the horrible waste production during Green Roof installation. Overall, an intensive Green Roof can restore the entire environmental footprint of a structure, if designed with the same biodiversity of a given location. Urban Tiny Forests on roof tops are one option for meeting a country's Carbon goals. That intensive Green roofs require high maintenance is partially a myth because this strongly depends on the plant selection.
For instance and urban rooftop forest hardly requires any maintenance other than professional trimming after every other year. Sure this can require some costly equipment but in comparison to some intensive Green Walls projects this is insignificant. Green Roof Technology's solutions incorporate an artesian irrigation system, where the vegetation controls the water supply. This can operated accurately without electricity and entirely invisible. Adopting the latter approach is the reason so many people end up needing green roof first aid down the road.
Like any other garden or living system, a green roof does need regular stewardship to protect plants, add nutrition and keep the environment balanced. Typically, extensive green roofs strive for environmental benefits — cooling and stormwater management prime among them — over human amenity space. If you increase that planting depth by a foot or two, though, a whole new realm of possibility opens up.
Green roofs with more than 6 inches of media are considered intensive. Their depth can range up to 2 feet or more, depending on the weight constraints of the roof. Because they can accommodate much taller plants, and even shrubs and trees, intensive green roofs often become rooftop gardens , true amenity spaces indistinguishable from gardens on the ground — except for the view, that is.
Herbs, grasses, flowering plants and more abound on intensive green roofs, lending perennial beauty to formerly bare roofs and decks. Note you may see some green roof systems referred to as semi-intensive , which describes those with media profiles between 6 and 12 inches. If you want an amenity space, you will need at least a semi-intensive environment. Want to talk extensive or intensive green roofs? Conversely, they both cater to the extremes.
You can rely on this option when you need something that uses a bit of both concepts. While extensive green roofs are more of a living machine and intensive green roofs serve as a garden or park, these green roofs work as a small habitat.
The plants used in semi-intensive green roofs usually include options like sedums, ornamental grasses, small shrubs, herbs, and selected perennials.
Not all perennials will thrive in this size of an environment. As for maintenance, you can expect a workload that falls in the middle too. In similar form to the rest of the concepts on this type of green roof, the depth of the roof sits inbetween the average ranges between an extensive and an intensive green roof.
The depth of a semi-intensive green roof sits in a range of 5 to 7 inches. This adds up to a weight of about 25 to 40 pounds per square foot, depending on construction and living components. Intensive green roofs are more frequently used on commercial buildings rather than residential ones. They also often feature non-organic components in the design.
This can include an option like a table to sit at or a bench to chat with others on or just take in the plant life. For more roof deck ideas visit this page. The main care that you need to worry about for an intensive green roof is the installation of a professional irrigation system. This is because they often have more plants with a wider variety and, thus, varying needs. This could include anything from ground coverings like lawns or putting greens, flowers especially perennials , shrubs, herbs, vegetables, and, in some designs, even trees!
As for the weight of an intensive green roof, you should plan for a range of 35 to 80 or more pounds per square foot of space. The main difference is how labor intensive they are. Intensive green roofs, on the other hand, are more expensive and the most complex. These are built off of the existing deck of the roof.
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