Green roofs offer many public, private, and design-based benefits. Because these types of intensive green roofs have deeper soils, they are heavier than extensive green roofs. Intensive green roofs offer a great potential for design and biodiversity. OPTIMO roofs are optimally layered flat roofs where the desired slope is achieved with FIBRANxps inclination thermal insulation boards instead of the heavy inclination concrete. A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane.It may also include additional layers such as a root barrier and drainage and irrigation systems. These roofs will have grasses, ground covers, flowers, shrubs and even trees. INTENSIVE GREEN ROOFS This kind of green roof type will give you 8-12” of grass, which tends to grow at a medium pace. Urban Heat Island Effect – if an urban area has numerous green roofs, heat island effect is lowered. Nature relaxes, promoting psychological well-being. Green roofs which are planted and seeded tend to perform better in the long term. You can get a wider variety of plants suited to the conditions offered by this option. Sound proofing. The intensive green roof uses planting mediums that have greater depth than the extensive green roof. Some of this info is cited, though I did not actually check the cited studies. This can improve people’s general sense of health and well-being, as well as overall neighbourhood quality. Depending on the source you look at these roofs may add 10 to 35 pounds per square foot to a roof’s load. It’s important to understand the slope of the roof and what structure and the future use or lifespan you’re considering as you make this choice. Comments? Could you please tell me botanical names of 10 small trees for intensive roofs for an area like Melbourne, Australia. However, this depth also means that an intensive green roof adds a lot of weight to a building, which your architect or structural engineer will need to account for. ft. versus $16.00/sq. Gardens and parks on roofs can store a great deal of water and are therefore good Sustainable Urban Drainage Systems (SUDS) for stormwater management. - Self-healing waterproofing membrane. Extensive (Li et al., 2014) 1: Modeling: Baltimore-Washington Intensive green roofs are widely used on commercial buildings where owners want to have large green areas that incorporate all sizes and types of plants. Intensive green roofs have more soil and a deeper growing medium—sometimes several feet—that can support a more diverse plant selection, including small trees. Intensive green roofs require a depth of soil of about 600mm, require irrigation, weeding and care. The extensive green roof The extensive type of green roof, by contrast have a soil depth of 50-150mm, only support very drought tolerant plants (no irrigation) are too harsh an environment for most common weeds and so require very little maintenance. The total area of sites was 31.2 hectares. Carbon is sequestered. The system composes of a specially formulated free-draining topsoil above a drainage board. For more green roof tips and tricks, you can subscribe to this site’s RSS feed and sign up for my free email mini-course using the box below. Be aware of installation issues. Extensive roofs are thin lightweight roof systems that typically have a planting media measuring 6 to 20 cm deep, while heavier, thicker green roofs are known as intensive roofs and their growing media ranges in thickness from 20 cm to 100 cm. They therefore need to be installed on a much stronger structure. Intensive and extensive green roofs. With an intensive roof the only real limit to its scope is the weight of the system and the structure necessary to support it. Green Flat Roof. On an intensive green roof, with few exceptions, the choices are limitless. They are also best suited to spaces where people are seldom going to be walking on the roof surface. The plants and growing medium are absorbing the solar rays, protecting the roofing materials from UV breakdown.The green roof also shields the membrane from extreme temperature variations, another cause of hastened degradation. The thickness of the substrate layer depends on the desired vegetation. Intensive green roof: $15 to $50 per square foot. People walk on them mainly for maintenance. Other names include “low profile” and “performance.” The design is supposed to give high performance to water use and thermal advantages, while keeping the overall weight of the roof low. // ]]> An extensive green roof can reduce sound from outside by 40 decibels, while an intensive roof can reduce sound by 46-50 decibels (Peck et al. Extensive roofs (click here for more) are more often used for single family and multi-family residential buildings. Intensive Green Roofs, often referred to as ‘Roof Gardens’, can be viewed very much like a garden area and may be landscaped to include trees, lawns, flower beds and paved areas. Pedestal supported. They will often include paths and walkways that travel between different architectural features to provide space where people can interact with the natural surroundings. Intended for recreational, sporting and leisure purposes, they are often indistinguishable from at-grade landscapes. They also provide a good thermal barrier and depending on the planting can also be good for biodiversity. An extensive green roof offers a number of advantages over an intensive green roof. A variation of the extensive green roof is called semi-extensive. The planting medium in extensive green roofs ranges from 1.6 to 6 inches deep and while deeper systems have been installed they are not favored as much as the shallower systems.Drought-tolerant sedums (succulent plants) and grasses are the typical plants used since they are shallow-rooted and use little water.Plant diversity on these roofs is kept low to simplify care and to be sure all plants have similar moisture requirements. Intensive green roofs are not only found on buildings, but also over underground constructions such as car parks. Feel free to shoot me a comment – I will try to respond to all of them. The depth of topsoil can be varied to accommodate the specific planting to be installed. Pingback: Intensive vs. Extensive Green Roofing « Online Medical Observer. Lower costs. Green roof expert and trainer Dusty Gedge explains how to specify a green roof Extensive roofs are lower maintenance that intensive ones and lighter in weight. According to Penn State research, a green roof will lengthen roof life by two to three times.*. Through the process of photosynthesis, carbon dioxide is removed from the atmosphere and stored as carbon in biomass. A simple lawn will need regular mowing and irrigation during summer, whilst a green roof with plenty of trees and shrubs may also need irrigation and attendance to the vegetation. Semi Intensive Green Roofs Semi-Intensive Green Roof - A semi-intensive green roof system is characterized by small herbaceous plants, ground covers, grasses and small shrubs, requiring moderate maintenance and occasional irrigation. A semi-intensive green roof can include characteristics of both extensive and intensive roofs. Urban agriculture on green roofs would be considered an intensive green roof, as they need regular maintenance, relatively deep soils and a certain amount of irrigation. In essence, they are parks or gardens on roofs. Green roof plant type includes sedum, herbs, and grass. Increased longevity of roofing membranes. As parks and gardens, they need frequent maintenance, just as a park or garden needs to be tended on a regular basis. - Waterproofing with high elasticity and great durability. (Homesteading/survivalism) and then linked here. Garden Roof® Assembly: Intensive - The landscape possibilities with an Intensive Garden Roof® Assembly are virtually limitless. Below we explain the main differences. Semi intensive green roofs, as their name states, are a combination of the aforementioned two types. Intensive vs. Extensive Green Roofing « Online Medical Observer. Construction / Installation. An intensive green roof installation incorporates beautiful flora from across the United States, hosting shrubs, assorted flowers, and shade-giving trees. The word ‘intensive’ actually refers to the amount of input required to maintain a green roof. Green roofs ‘harvest’ rain water and put it to beneficial use. In order to accommodate plants that need a lot of room for their roots, such as trees or shrubs, intensive green roofs are deeper. Rooftop farms, urban roof farms or vegetable farms on roofs are clearly intensive green roofs and require higher nutrient applications and focused … These green roofs tend to stay more attractive in dry weather and are very often irrigated. Furthermore, they provide visual and physical amenity for residents and the people who overlook them. Permanent irrigation systems incorporated into the scheme will also have maintenance schedules. Planting can include lawns, shrubs, edible plants, … To bear this weight, an expensive, custom, support structure is required. // ]]> The intensive green roof uses planting mediums that have greater depth than the extensive green roof. Intensive green roofs can most easily be compared to building a garden on a roof. A typical growing medium depth … So long as the structure can support the weight, almost unlimited planting and landscaping can be achieved, including large shrubs, grassland, flowerbeds and even trees. The vegetation consists of lawns, shrubs, and trees and can easily be combined with pedestrian and vehicular pavements. GRHC members are an excellence source of green roof expertise, and a resource manual is available from GRHC's Green Infrastructure Store. These maintenance tasks would be similar to those required for any ground based hard or soft landscaping elements. The maintenance is regular and depends on the landscape design and the chosen plant material. Intensive green roofs tend to be areas where greater access and people traffic is envisaged. The depth of an intensive green roof ranges from 15 cm to as much as 150 cm, and can easily weigh as much 300 to more than 1500 kg/m2. Intensive green roofs are comparable to soil-bound green areas, such as gardens and park landscapes. Green Roof Service LLC / Green Roof Technology specializes in innovative design, smart engineering and turn-key implementation of ground-remote monolithic vegetation, fully integrated Solar Garden Roofs, Green Infrastructure Master Plans, luxury roof-top gardens, effective bio-filtration, natural swimming pools, green walls and intelligent urban agriculture. When planted with native vegetation – a green roof becomes a habitat for indigenous species and migrating butterflies, birds and bees. All plants will have fertilizer and water needs and many will require clipping and pruning. Intensive green roofs are the heavy-weights, literally, of the green roof world. Extensive green roofs are the simplest to install and are very often added to existing roofs. Intensive green roofs are intended to replicate what can typically be found at ground level in the natural landscape, and in green spaces such as parks or cultivated gardens. It also allows for a formal garden to be installed with paths, grass lawn and flowers or pot plants. The extensive green roof is the typical choice for homeowners, but if you are building a home you can enjoy the wider options offered by the intensive green roof because it can be included in the plans, saving the costs of retrofitting an existing structure. Blackdown Intensive substrate is required; the substrate contains more organic matter than other green roof types, and is designed to support a wider variety of plants and trees. The degree of maintenance for intensive green roofs depends on what has been planted. Intensive green roofs require the deepest soil and have the greatest impact on the structural design, but they also accommodate all types of plantings including large shrubs and trees. Creating low maintenance accessible areas such as walkways, access roads and terrace spaces with container planting set atop the paving or decking for an intensive green roof finish. Typically these roofs will have more soil and some small shrubs as well as the low-growing wildflowers and sedums found on an extensive roof. Once the plants are installed and the soil is moist these rooftop green spaces can weigh as much as 150 pounds per square foot. Reduced storm water runoff. This system supports everything from small personal/home gardens to full scale public parks. Le Jardin de toit – Paris Intensive green roofs – maintenance Rooftop garden, Allen & Overy – London. An intensive green roof system designed for ground cover, shrubs and trees. Could you please tell names of 10 small trees for intensive green roofs for an area like Melbourne, Australia? Flexible, lightweight solutions to give a free draining, paving or decking option above waterproofing. Hence, all technical performance details provided will vary by region, climate, building, design, and green wall type. Extensive green roof: $8 to $20 per square foot. Another term for these green roofs is “rooftop garden.” The soil will be up to a foot deep and not require irrigation. [CDATA[ This deeper soil allows intensive roofs to accommodate large plants and dramatic plant groupings. They are usually multifunctional and accessible. Blackdown Intensive green roofs have a typical substrate depth that ranges from 200-1500mm and require a permanent irrigation system and regular maintenance. Intensive green roofs involve intense landscaping, and are suited to roofs with a highly visible presence or public access, and commonly referred as a ‘roof garden’. Plant selection and design greatly affects the maintenance required for the upkeep of these roofs. This can vary from grass/herbs to trees. do u think that thermal,solar and visible absorptance is different to these types of green roof? Pingback: Green Roof FAQ | Green Roof Plan. The planting medium in intensive green roofs starts at 6 inches (although you will see some wiggle room in various definitions) and really elaborate designs may exceed a couple feed. Thus, they have more substantial structural loads and need more frequent maintenance … The weight of an intensive green roof system is critical for a particular type of plant, and the minimum intensive green roof thickness should ranges from 150mm for a wild grassland, 300mm for bushes, and 3 meters in height and at least 400mm upper substrate and 250 mm lower substrate for small trees of approximately 10 meters. In essence, they are parks or gardens on roofs. The installation and maintenance costs of an extensive green roof are relatively low compared to intensive green roofs. These green roofs also fit outbuildings like sheds and garages very well. Intensive green roofs have a thicker substrate layer and therefore also carry more weight. During dry times these rooftops may turn brown, only to revive with rain. When the water falls on a typical roof, it’s often funneled off into storm water drains, collecting pollution along the way and polluting our waterways or increasing the amount of sewage to be treated. I was turned on to this by a group on facebook. Less load on the support structure. They require more weight and a deeper system build-up. Blackdown Green Roofs are available in three broad application categories including Extensive, Biodiverse, and Intensive and offer engineered living roof systems which are fully compatible with Alumasc Roofing System‘s warranted waterproofing ranges. - Application with blowtorch. Habitat. A semi-intensive green roof can give rise to a richer ecology with more diverse plant and animal species. The vegetation for this roof needs a lot of water and regular maintenance. //

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