Green roofing soil dispersion experiment video now available! Green roofs resistant to disasters (strong winds).

basic information

This is a method of evergreen sedum bag system® (FTM bag) using a zipper-type planting bag. It is a triple intellectual property product (patent No. 4911418 + registered trademark No. 6125712) + variety registration (variety registration No. 15866). The triple intellectual property of the evergreen sedum bag system (patent, trademark, variety registration) leads to successful rooftop greening. 1. Prevents the intrusion of weeds. 2. Prevents soil runoff. 3. Easy installation with a zipper. The standard size of the bag system is 50 cm square, with a wet weight of 13 kg per piece. There is also a rectangular type measuring 15 cm x 100 cm. Additionally, grommet options and custom sizes are available. The rectangular type is used for wall greening and folded plate roof greening. The bag material is made of root barrier sheet, which stops the intrusion of weeds and prevents soil scattering and runoff. The bag allows the evergreen sedum to provide moisture to the soil while preventing soil drying. The site will receive bags filled with soil and seedlings of evergreen sedum, so you simply open the zipper of the bag, insert the seedlings, and close the zipper. It is a simple greening system that completes greening just by arranging the bags with plants.

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Applications/Examples of results

【Evergreen Giraffe Grass Bag Method Achievements】 - Over 500 private facilities - Over 50 public facilities - Numerous others 【Greening Applications】 - Rooftop greening, folded plate roof greening, wall greening, slope greening, erosion control dam greening, road greening, concrete slope greening, environmental greening, weed control under solar panels, etc. 【Applications】 - Government and public facilities - Factories, offices, commercial facilities - Apartments, residential buildings - Civil engineering structures, erosion control dams, slopes - Ground cover - Weed control

Detailed information

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  Causes of Rooftop Greening Failures: Abnormal Weather In Japan, there have been many occurrences of damage from typhoons, heavy rain, floods, and landslides in various regions. Additionally, in recent years, there have been widespread heatwaves. In fact, Japan's temperatures have been rising year by year, with particularly abnormal high temperatures observed during the summer and autumn. Furthermore, not only is there a rise in temperatures, but extreme cold spells in winter have also been noted as one of the abnormal weather patterns in recent years. Amidst the increase in such weather phenomena, various problems have arisen in rooftop greening as well. For detailed information on the causes of failures in rooftop greening systems, please visit https://kirinsou.jp/reason/. For information on the evergreen Kirinsou bag method that overcomes the causes and issues of rooftop greening failures, please visit https://kirinsou.jp/system/.

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  Soil Erosion Experiment One of the reasons for the failure of rooftop greening is "soil erosion." We recreated heavy rainfall by bursting large water balloons and conducted an erosion experiment comparing the rooftop greening systems "bag method vs. conventional method." Recently, extreme weather events have increased, and the occurrence of "intense rain" with rainfall amounts exceeding 80 mm per hour has increased by about 1.7 times over the past 30 years. Such heavy rain can wash away the soil and plants from rooftop greening, causing issues like clogging drainage systems. For a video comparing soil dispersion experiments, please visit https://kirinsou.jp/system/#experiment1.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kiri Grass Bag Method" Case Study: Roof Greening This is roof greening using the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method." Since it is on the roof surface, it is secured with anti-dispersion nets. The Asakusa Culture and Tourism Center is a tourist information facility located in Taito Ward, in front of the Kaminarimon Gate. The first floor features an information counter that supports Japanese, English, Korean, and Chinese, as well as a foreign currency exchange service, while the second floor has a tourist information corner. The top floor, the 8th floor, is a free observation terrace. Due to the existing building being over 50 years old and deteriorating, a competition was held in 2008, and the proposal by Kengo Kuma was adopted. The initial plan had a height of 41.25m, but there were objections from Senso-ji Temple and the local shopping district, claiming it would disrupt the harmony of the streetscape, leading to a reduction of about 2m, resulting in a height of 38.9m. In 2012, it received the Good Design Award. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method," please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kiri Grass Bag Method" Case Study: Rooftop Greening (Also Accommodates Curves) This is a rooftop greening project of approximately 180 square meters using the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method." The greening area is divided into buildings A to D, and the shapes are not rectangular, with curved sections throughout the rooftop greening. This cannot be accommodated by typical tray-based greening systems. The Evergreen Kiri Grass Bag Method also accommodates square shapes of 50cm, 25cm, and rectangular shapes of 15cm x 50cm. Since the bags have flexibility, they can be shaped on-site to fit the design. Additionally, custom sizes can be ordered, allowing for rooftop greening tailored to the site. The flexibility of the bags also enables greening on curved surfaces. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method," please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kiri Grass Bag Method" Case Study: Rooftop Greening (Rooftop Greening by Middle School Students) The students themselves carried materials up to the rooftop, planted them in bags, and arranged the bags to complete the rooftop greening. The photo below was taken as a graduation memory. This rooftop greening project was led by the school's science club. The science club measured the temperature of classrooms that were not greened and the classroom directly below the rooftop greening, using thermography to investigate the temperature distribution in the classrooms. In the classroom directly below the rooftop greening, the overall temperature was shown in blue, confirming the effectiveness of the rooftop greening. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method," please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kiri Grass Bag Method" Case Study: Rooftop Greening (Greening by Children, Rooftop Greening by Middle School Students) To combat the summer heat at the community center, we implemented the Evergreen Kiri Grass Bag Method. The community center is a prefab building, which makes it quite hot in the summer as the air conditioning does not work well. The greening was done by the local children. The bags of evergreen kiri grass come with name tags, allowing participants to write their names on them. By participating in greening activities, the children's feelings towards community development improve, and a sense of attachment to the plaza also grows. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method," please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kirinsou Bag Method" Construction Case: Slope Greening A sediment control dam, known as a "sabo dam," is a type of dam installed in rivers. It is designed to catch harmful sediment such as debris flows that flow down from upstream and gradually release the accumulated sediment to regulate the amount of sediment flowing downstream. By accumulating sediment in the sediment control dam, the slope of the river becomes gentler, preventing the riverbed and riverbanks from being eroded, while also reducing the destructive power of debris flows. Additionally, it helps stabilize the foothills on both sides, preventing landslides on the mountain slopes. However, the construction of large concrete walls in mountainous areas can lead to landscape issues. Until now, greening has been difficult on sediment control dams, and maintaining greenery has also been challenging. The Evergreen Kirinsou Bag Method has made it possible to easily achieve greening. The greening of sediment control dams blends well with the surrounding scenery. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kirinsou Bag Method," please visit https://kirinsou.jp.

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  Rooftop Greening Revolution: A Fail-Proof Rooftop Greening System "Evergreen Kiri Grass Bag Method" Construction Example: Slope Greening Using the Evergreen Kiri Grass Bag Method, we implemented greening with letters as a landmark at the interchange. Evergreen Kiri Grass is resilient to heat, cold, and drought, making it a low-maintenance plant. It replaces new shoots around November, so it does not grow wildly, and the shape of the letters remains unchanged. The bag method is made with weed control sheets, effectively preventing weed intrusion and soil erosion. With such low-maintenance plants and the bag method, it becomes possible to create letters through this greening system. For more details on the Rooftop Greening Revolution and the fail-proof rooftop greening system "Evergreen Kiri Grass Bag Method," please visit https://kirinsou.jp.