Extensive greening is a low-maintenance and high ecological value rooftop greening method. Unlike intensive greening, extensive greening usually employs a shallower soil layer, typically under 150 millimeters. This shallow soil layer limits the types of plants that can be planted, generally focusing on drought-resistant, wind-resistant, and easy-to-maintain ground cover plants, such as succulents, herbaceous flowers, and wildflowers.
Although there are relatively fewer types of plants, extensive greening focuses more on ecological benefits. This method of greening simulates the natural environment, allowing vegetation to change naturally and forming an ecosystem close to the wild. This not only reduces the need for manual maintenance but also provides habitats for urban wildlife, increasing the biodiversity of the city.
Intensive greening is a high-quality rooftop greening method that creates vibrant and layered green spaces by using a deeper planting soil layer. It not only provides beautiful visual effects but also offers building users a comfortable resting place, such as sky gardens and platform gardens.
In intense greening, deeper soil layers are generally over 150 millimeters, providing sufficient nutrients and moisture for plant growth. Therefore, this greening method allows for the planting of a diverse range of plant species, including shrubs, trees, and perennial flowers, creating an ecological environment close to nature. Through reasonable plant combinations and layouts, seasonal landscape effects can be formed, giving a sense of being immersed in the environment.
BW Green Power is dedicated to providing customers with comprehensive rooftop greening solutions. We have rich experience and a professional team to offer quality services for various greening projects. In addition, we pay special attention to the safety and waterproof performance of green roofs. Our professional team conducts strict waterproof tests and regular inspections to timely identify and resolve potential issues, ensuring the safety of the green roofs and the structural integrity of the buildings.
Professional assessment
Tailor-made
Quality seedlings
Building structural load capacity
Before proceeding with rooftop greening, it is essential to assess the structural load-bearing capacity of the building. The greening layer, which includes soil, plants, drainage layers, etc., will increase the static load on the roof. It is necessary to ensure that the structural design of the building can withstand this additional weight to prevent any impact on the safety of the building.
Waterproof layer condition
The integrity of the waterproof layer on the terrace is crucial for greening projects. Before construction, the condition of the waterproof layer must be carefully checked, and any damaged or aged parts must be repaired. The design of the greening layer should also take into account the protection of the waterproof layer to avoid damage to the waterproof materials from plant roots.
Plant selection
Choosing the right plant species is the key to successful rooftop greening. First, the plants must adapt to the microclimate conditions of the rooftop, such as strong winds, bright light, and high temperatures. Second, it is important to select varieties with shallow root systems that are less likely to invade the waterproofing layer. Furthermore, factors such as the survival rate, growth speed, and drought resistance of the plants should be considered to reduce maintenance costs later on.
Drainage and Isolation
A good drainage system is essential for ensuring the long-term health of rooftop greening. When designing, factors such as the thickness, materials, and slope of the drainage layer should be considered to ensure that rainwater can be discharged in a timely manner, avoiding damage to plants and buildings caused by water accumulation. At the same time, an isolation layer, such as permeable geotextile, should be installed between the soil layer and the drainage layer to prevent soil particles from clogging the drainage system.
