I was turned on to this by a group on facebook. 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. ft. for a conventional roof. 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. The word ‘intensive’ actually refers to the amount of input required to maintain a … To bear this weight, an expensive, custom, support structure is required. - Waterproofing with high elasticity and great durability. The vegetation for this roof needs a lot of water and regular maintenance. hey there!! do u think that thermal,solar and visible absorptance is different to these types of green roof? Intensive green roofs are the heavy-weights, literally, of the green roof world. 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’. An extensive green roof offers a number of advantages over an intensive green roof. Thus, they have more substantial structural loads and need more frequent maintenance … 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. All plants will have fertilizer and water needs and many will require clipping and pruning. Hence, all technical performance details provided will vary by region, climate, building, design, and green wall type. 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. 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. - Application with blowtorch. Carbon is sequestered. Intensive green roofs are the heavy-weights, literally, of the green roof world. The installation and maintenance costs of an extensive green roof are relatively low compared to intensive green roofs. 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. This can vary from grass/herbs to trees. Vegetable and herb gardens fit in well on these rooftops and to a degree their care is slightly easier than ground level gardens since fewer pests and weeds find their way to the higher elevations. The total area of sites was 31.2 hectares. Aesthetic appeal. 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. The main types are: Extensive systems: These green roofs are used for areas that are out of reach and not used for other purposes. The irrigation and drainage systems have to operate at peak efficiency to reduce the chance of overloading the roof’s structure. In its life, however, it was estimated the green roof would save over $200,000 (in 2006 energy prices) with two-thirds of that coming from reduced energy needs. 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. This system supports everything from small personal/home gardens to full scale public parks. Typically requiring a depth of substrate between 100 mm to 200 mm, a wider range of plants can be included, compared to extensive roofs, including shrubs and woody plants. Less load on the support structure. You can compare an intensive roof to a normal garden, and this is why an intensive green roof is also known as a roof garden or garden roof. Green Flat Roof. These roofs will have grasses, ground covers, flowers, shrubs and even trees. Intensive green roof: $15 to $50 per square foot. 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. 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. Could you please tell me botanical names of 10 small trees for intensive roofs for an area like Melbourne, Australia. Comments? If you continue to use this site we will assume that you are happy with it. Planting can include lawns, shrubs, edible plants, … As far as the various forms of green roofs and green roof systems, this will ensure that you get the help that you need in getting something a bit more landscaped and a bit heavier in terms of the depth of appearance. The degree of maintenance for intensive green roofs depends on what has been planted. ft. versus $16.00/sq. Sound proofing. [CDATA[ Once the plants are installed and the soil is moist these rooftop green spaces can weigh as much as 150 pounds per square foot. Plant selection and design greatly affects the maintenance required for the upkeep of these roofs. An intensive green roof installation incorporates beautiful flora from across the United States, hosting shrubs, assorted flowers, and shade-giving trees. A semi-intensive green roof can give rise to a richer ecology with more diverse plant and animal species. 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. 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. Studies have shown that a green roof can reduce your cooling costs by 50% and more during the summer months and in the winter your home will retain 15-30% more heat than if you had a conventional roof. // ]]> The intensive green roof uses planting mediums that have greater depth than the extensive green roof. 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 green roofs are the simplest to install and are very often added to existing roofs. The vegetation consists of lawns, shrubs, and trees and can easily be combined with pedestrian and vehicular pavements. Green roof plant type includes sedum, herbs, and grass. As parks and gardens, they need frequent maintenance, just as a park or garden needs to be tended on a regular basis. Green roofs offer many public, private, and design-based benefits. (Homesteading/survivalism) and then linked here. 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. Green roof coverage 100%. According to Penn State research, a green roof will lengthen roof life by two to three times.*. Increased longevity of roofing membranes. // ]]> Reduced storm water runoff. GRHC members are an excellence source of green roof expertise, and a resource manual is available from GRHC's Green Infrastructure Store. A typical growing medium depth … Wallbarn supplies intensive green roof systems with soil substrates over 1 metre deep. This deeper soil allows intensive roofs to accommodate large plants and dramatic plant groupings. Biodiversity and green roofs – green roof services, Green roofs benefits – improved energy performance, Water quality, rainfall harvesting and green roofs, Green roofs and living walls in the Netherlands, Wild Bees and Green Roofs – London and Switzerland. People walk on them mainly for 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. Intensive green roofs generally require an irrigation system and regular maintenance, just as … Be aware of installation issues. Because these types of intensive green roofs have deeper soils, they are heavier than extensive green roofs. google_ad_client = "ca-pub-5116174247945809"; /* in post2 */ google_ad_slot = "0646706600"; google_ad_width = 468; google_ad_height = 60; 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. Extensive green roof: $8 to $20 per square foot. Depending on the source you look at these roofs may add 10 to 35 pounds per square foot to a roof’s load. Intensive green roofs offer a great potential for design and biodiversity. 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. A semi-intensive green roof can include characteristics of both extensive and intensive roofs. 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. Extensive (Li et al., 2014) 1: Modeling: Baltimore-Washington Extensive roofs (click here for more) are more often used for single family and multi-family residential buildings. 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. Benches, tables, planter boxes, greenhouses, ponds and fountains offer people places to relax, dine or work in park-like settings. They also provide a good thermal barrier and depending on the planting can also be good for biodiversity. On an intensive green roof, with few exceptions, the choices are limitless. They therefore need to be installed on a much stronger structure. The soil will be up to a foot deep and not require irrigation. Intensive vs. Extensive Green Roofing « Online Medical Observer. 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. - Self-healing waterproofing membrane. Le Jardin de toit – Paris Intensive green roofs – maintenance Rooftop garden, Allen & Overy – London. On a sunny, 80-degree-F day, a black roof can reach 180 degrees F; a white roof 120 degrees; and a plant-covered roof 85 degrees. Flexible, lightweight solutions to give a free draining, paving or decking option above waterproofing. With an intensive roof the only real limit to its scope is the weight of the system and the structure necessary to support it. The maintenance is regular and depends on the landscape design and the chosen plant material. 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. Semi intensive green roofs, as their name states, are a combination of the aforementioned two types. 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. Another term for these green roofs is “rooftop garden.” Intensive green roofs require more maintenance because of the plant varieties they will support. Intensive green roofs have a thicker substrate layer and therefore also carry more weight. Blackdown Intensive green roofs have a typical substrate depth that ranges from 200-1500mm and require a permanent irrigation system and regular maintenance. Intended for recreational, sporting and leisure purposes, they are often indistinguishable from at-grade landscapes. [CDATA[ These maintenance tasks would be similar to those required for any ground based hard or soft landscaping elements. The depth of topsoil can be varied to accommodate the specific planting to be installed. Lower costs. Intensive green roofs have higher maintenance requirements than extensive or a semi-intensive roofs. You can get a wider variety of plants suited to the conditions offered by this option. They will often include paths and walkways that travel between different architectural features to provide space where people can interact with the natural surroundings. These green roofs also fit outbuildings like sheds and garages very well. 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. Below we explain the main differences. Save money and use fewer energy resources. Could you please tell names of 10 small trees for intensive green roofs for an area like Melbourne, Australia? Rubber crumb or playtop Urban Heat Island Effect – if an urban area has numerous green roofs, heat island effect is lowered. Green roofs which are planted and seeded tend to perform better in the long term. Pedestal supported. 1999). 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. When planted with native vegetation – a green roof becomes a habitat for indigenous species and migrating butterflies, birds and bees. Intensive green roof: - Waterproofing: Adhered two-layer bituminous membrane (SBS) - Thermal insulation: Extruded polystyrene (XPS) - Finish: Intensive vegetation ADVANTAGES: - Waterproofing resistant to root penetration. In essence, they are parks or gardens on roofs. //