Roof Greening FAQ: All 310 Questions - Successful Roof Greening - Roof Greening Knowledge Database
FAQ on Rooftop Greening: All 310 Questions - Selection of Methods Before Implementation and Maintenance Management Decision Materials. A knowledge database covering the design, construction, and maintenance management of rooftop greening.
To avoid regrets about rooftop greening. Check the rooftop greening FAQ with all 310 questions. A knowledge database covering the design, construction, and maintenance of rooftop greening.
To avoid regrets about rooftop greening, it is important to check not only the appearance immediately after installation but also the maintenance condition several years later. At the Greenery Planning Research Institute, we have organized a total of 310 FAQs regarding pre-introduction checks for rooftop greening, selection of methods, weed control, soil runoff, soil dispersion, regeneration of existing greenery, and choosing contractors. On this page, we present a selection of nine representative questions to consider for successful rooftop greening.
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basic information
Document Type: Rooftop Greening FAQ and Pre-Implementation Confirmation Materials Contents: Excerpts of 9 representative questions from a total of 310 rooftop greening FAQs Target Audience: Designers, facility managers, construction companies, and clients considering rooftop greening Confirmation Items: Perspectives that do not judge solely based on the immediate post-construction phase, weeds, soil erosion, soil dispersion, method comparisons, regeneration of existing rooftop greening, vendor selection, and points of caution for advertising displays Related Information: The full 310 rooftop greening FAQs are available on this site.
Price information
There are no price listings. This page is an information page introducing 9 representative questions from the 310 questions in the rooftop greening FAQ. Please use it as a reference to "organize your thoughts on rooftop greening before comparing prices."
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Applications/Examples of results
**Main Use Cases** This page is intended to be used for the initial consideration of rooftop greening, selection of methods, regeneration of existing rooftop greening, organization of maintenance management risks, and as a reference material before selecting contractors. It can also be utilized when the client, designer, construction company, and facility manager want to share the prerequisites and decision-making criteria related to rooftop greening. This page extracts nine representative questions from a total of 310 rooftop greening FAQs. The aim is to provide information to organize perspectives that should be confirmed before implementation, such as weeds, soil erosion, scattering, changes over time after construction, and how to view advertising displays, rather than judging solely based on specific successful cases.
Detailed information
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FAQ: J-30 What should I check to avoid regrets with rooftop greening? A. If you judge rooftop greening solely based on its appearance right after completion, unexpected costs and efforts may arise during future maintenance and updates. When considering it, it is recommended to check in advance: - Maintenance methods - Weed control measures - Drainage plans - Soil erosion prevention measures - Wind resistance measures - Repair methods - Renewal methods
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FAQ: X-1 Should rooftop greening be evaluated only immediately after installation? A. No. It is important to check the long-term maintenance status of rooftop greening, not just immediately after installation. Many rooftop gardens look beautiful right after installation. However, plants are living organisms, and their condition changes over time. In recent years, they have become more susceptible to factors such as: - Extreme heat - Low rainfall - Heavy rainfall - Typhoons - Invasion of weeds Therefore, it is recommended to check the maintenance status not only immediately after installation but also after: - 1 year - 3 years - 5 years - 10 years In general, about 3 to 4 years after installation, differences such as weeds, plant decline, soil erosion, and poor drainage may appear. It is important to confirm not only the appearance at the time of installation but also whether the method is easy to maintain in the long term.
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FAQ: J-10 Why does the amount of weeds increase with rooftop greening? A. Weed seeds are continuously carried by wind and birds. Even if there are few weeds immediately after construction, over time, seeds accumulate, making it easier for weeds to grow. Therefore, it is important to check the condition a few years after construction, rather than immediately after.
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FAQ: J-12 Is soil runoff prevention important for green roofs? A. Yes. Soil runoff prevention is one of the important considerations when evaluating green roofs. Unlike ground level, rooftops are more susceptible to strong winds and heavy rain, and if soil runoff occurs, it can lead to clogged drainage, impact on the surrounding environment, and increased maintenance costs. Additionally, soil runoff can worsen the growing conditions for plants, potentially causing partial wilting or poor growth. Therefore, when considering green roofs, it is recommended to check: - How soil runoff prevention measures are implemented - Whether drainage routes during heavy rain are taken into account - Consideration for the area around drainage outlets - Whether the structure is designed to minimize soil runoff even after long-term use It is important to verify these aspects, as issues may not arise immediately after installation, but heavy rain or typhoons a few years later could lead to soil runoff. Thus, checking the condition and maintenance methods after 3 to 4 years post-installation is also crucial.
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FAQ: J-11 Is soil erosion control important for green roofs? A. Yes. Rooftops are more susceptible to strong winds than ground level, and depending on the height of the building and the surrounding environment, unexpected winds can occur. When soil is blown away, it can lead to: - Clogging of drainage outlets - Dirt on exterior walls and surrounding facilities - Increased maintenance burden Therefore, measures against soil runoff and soil erosion, as well as the plants themselves, are important points to consider when selecting a green roof system.
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FAQ: J-5 What is the difference between tray-based green roofs and bag-based systems? A. The tray-based system involves placing plants and soil in trays, while the bag-based system integrates plants and soil into a bag-like substrate. The tray-based system is easier to standardize and install, but it requires attention to the smoothness of the installation surface, fixation methods, wind resistance, tray degradation, soil runoff, and partial repairs. The bag-based system is flexible and can easily adapt to minor irregularities in the installation surface. It is also easier to apply for partial repairs and renovations of existing green roofs. In both systems, comprehensive design that includes plants, soil, drainage, wind resistance, and maintenance is crucial.
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FAQ: F-7 Can we install without removing the existing rooftop greening? A. It may be possible to install. The rooftop greening cover method is fundamentally based on installing a new greening system on top of the existing rooftop greening. However, if the existing base is significantly deteriorated, if there are drainage issues, or if inspection of the waterproof layer is necessary, partial or complete removal may be appropriate. The rooftop greening cover method is a technique that allows for the repair, renovation, and regeneration of existing rooftop greening that has experienced deterioration or functional decline, without removing or disposing of it, by installing a new rooftop greening system (evergreen Kiri grass bag method) on top. This method assumes the reconstruction of the existing rooftop greening without removal and is positioned as one option for considering the regeneration of rooftop greening while minimizing the time, costs, and impact on the surrounding environment associated with removal.
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FAQ: J-29 What are the key points to consider when choosing a rooftop greening contractor? A. Rooftop greening involves multiple elements, including plants, architecture, waterproofing, drainage, and maintenance. When selecting a contractor, it is recommended to check the following points: - Track record of construction - Reasons for plant selection - Drainage measures - Soil erosion prevention measures - Wind resistance measures - Weed control measures - Maintenance methods - Renewal methods - Warranty details In addition to price, long-term maintainability is also important.
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FAQ: J-16 Can rooftop greening labeled as "Industry No.1" be trusted? A. When you see a label stating "Industry No.1," it is important to verify the basis for that claim. Here are the points to check: - What is it No.1 in? - Is it based on construction area? - Is it based on the number of projects? - Is it based on sales? - Is it based on customer satisfaction? - What is the survey period? - Which companies were surveyed? - Which organization conducted the survey? - Is it nationwide or limited to a specific region? - Does it refer only to rooftop greening or does it include other types of greening as well? A No.1 claim without clear evidence is insufficient for assessing actual quality and long-term stability.
Company information
In manufacturing, there are people, and in projects, there is drama. The "passion" of three individuals transcends the boundaries of the company, leading to "co-creation" and "hope." In April 2007, at an exhibition, a project team was born. They wanted to create new solutions originating from the field to solve customers' problems. Three professionals who shared such passionate thoughts met, and the Evergreen Kiri-Sou Promotion Association was established. Professionals in plants, architecture, civil engineering, and facilities breathe new life into the city. Moments of inspiration are continuous. The opportunities to experience moments where the heartbeat never stops are becoming fewer. Why is that? Perhaps it is because of the increase in fakes and deceptions. We aim to remain professionals involved in plants, architecture, civil engineering, and facilities, and we operate the Evergreen Kiri-Sou Promotion Association. The professionals have developed new greening methods and greening systems. That is the Evergreen Kiri-Sou bag method.
