November 3, 2011
Explanation Of A Green Roof And Its Attributes
Roofs have ordinarily been created so as to let water run off the surface as soon as feasible. But a green roof really retains the water rather than getting rid of it. It might also make maintenance more challenging and can cost up to 50% more to install. So why would you give consideration to building a green roof? For the finest in green roofing construction contact Atlanta roofing company.
These green roofs or GR, consist of a roofing layer wherein plants can grow. The new GR progress has been devised in Germany. In Germany, roughly 10% of all buildings are green. The roof cover is put on in layers, with various functions being filled by each. There’s a substratum and then a base layer on top of that acts to seal the roof and make the building waterproof. This might come in the form of metal tray roofing or a artificial membrane. A drainage layer is added to make it possible for water to evacuate the roof, followed by a filter and root protection layer. To reduce leaks the root protection membrane prevents puncturing the waterproof membrane during plant growth. The growing medium itself where the plants get bedded functions as the last layer. Green or “living roofs” can be divided into three main categories. The three main categories of green roofs are called bio divers,intensive, and extensive.
Extensive GR, which are sometimes called Eco roofs, are commonly implemented to increase growth of mosses, grasses and herbs. This specific growing medium is fairly shallow and has a depth of roughly 50 to 200 millimeters. The weight of the plant medium is 60-150kg per square meter. Eco roofing is implemented where there is little or no human foot traffic and low maintenance roofing is required. This form of roofing is the least expensive to put in. If you have any questions concerning green roofing contact roofing company Atlanta.
They are constructing roof and park gardens using Intensive green roofing. This category of roofing offers the widest range of planting opportunities. You can use flowering plants, shrubs, and trees, for instance. The growing medium should be at least 150mm thick. This pushes the weight per square meter up to 180-500kg and requires a substantial structure to support it.
Bio diverse roofing needs to be left alone and is created to be able to reproduce a natural ecosystem . Varied soil levels on the surface can create a wide range of habitats for different species. You will plant local flora and any seeds that the wind sweeps in will be encouraged to take root. One of the things that bio diverse roofing is focused on is the habitat needs of species that have threatened status.
Green roofing can turn an unappealing urban roof into an aesthetically pleasing feature. Living roofs provide plenty of financial rewards and additional aesthetic value. The waterproof membrane on roofs is subjected constantly to ultra violet light. These UV rays break down the surface of the roofing causing leaks and the need for early replacement. The growing medium of living roofs provides a protective layer stopping damage from the sun. That can make your roof very last twice as long and make it possible for you to get back whatever extra money you spent to get it installed. Another advantage to green roofing is that it provides seasonally appropriate insulation. Local government now see the benefit of ecological roofing. Often, district councils offer tax breaks for developers who use green roofing. The progression will persist as reducing carbon wastes becomes a necessity.
Normal urban roofs will absorb the suns rays and emit them as heat. This creates urban heat emission. This effect is most detectable at night with urban areas being warmer than surrounding areas. Because of the urban heat island effect, the air temperatures in London are usually around 6 degrees warmer at night. A green roof will diminish the effect of radiation from heat because it will not absorb it. Thus, the need for air conditioning might be reduced in hotter climates.
Mass urbanization leads to high water run off and flooding. The natural drainage of very heavy rainfall can be offset by large areas of concrete and tarmac that are built up or in the way. Green roofing absorbs between 50-75% of rainfall, steadily releasing it back into the environment. This evaporation process also cools the building reducing energy consumption and carbon wastes even further.
Dependent on the growing medium and the species present, green roofing can store up to 239 grams of carbon per square meter. It provides a habitat for plants and insects and also food for bee’s and birds, so it is a very beneficial resource. An ecologically sound roof effectively puts back the green footprint that was removed when the building was constructed.
Filed under House and Home by admin

Leave a Comment