Traditional roofing is made to shed water as quickly as possible from the Modular Green Roof Trays. Conversely, green roofing actually holds water on the roof. It may also make maintenance harder and can cost up to 50% more to install. So why would you think about building a green roof?
What is ecological roofing? An eco friendly roof (GR) provides a base on top of a structure by which various plant life may grow. Recent GR progress has been created in Germany. About 10% in the buildings in Germany are now green. The covering is made up in layers, each layer fulfilling a different function. The base layer sits along with the substrate and provides a waterproof seal for the building. This may come by means of metal tray roofing or even a synthetic membrane. A drainage layer is put into allow water to evacuate the roofing, accompanied by a filter and root protection layer. The main protection membrane prevents plant growth from puncturing the waterproof membrane and causing leaks. The last layer will be the growing medium in which the plant growth is bedded. Green or “living roofs” can be split into three main categories. Extensive, Intensive and Bio diverse.
Extensive green roofs – Extensive GR, (also called Eco roofing) is used to market the growth of mosses, herbs and grasses. The growing medium is fairly shallow having a depth which is between 60-200mm. The weight in the plant medium is 60-150kg per square metre. Eco roofing is utilized where there is little or no human foot traffic and low maintenance roofing is necessary. This type of roofing is definitely the cheapest to install.
Intensive green roofing – Roof gardens and park gardens are constructed using Intensive green roofing. This class of roofing provides the widest range of planting opportunities. Shrubs, flowers and even trees could be utilised. The depth in the growing medium is between 150-400mm. This pushes the body weight per square metre up to 180-500kg and needs a substantial structure to support it.
Bio diverse green roofing – Bio diverse roofing is made to be left alone to reproduce a natural ecosystem. Soil levels on the surface are varied to produce a wide range of different habitats for different species. Local plants are grown and wind swept seeds can take root. Bio diverse roofing is usually aimed at providing a specific habitat for a threatened species.
The rewards for your building – Green roofing can make an unattractive urban roof into an great looking feature. And also the aesthetic value added, living roofs provide numerous financial benefits. The waterproof membrane on roofs is subjected constantly to Ultra-violet light. These UV rays breakdown the surface of the roofing causing leaks and the need for early replacement. The growing medium of just living roofs provides a protective layer preventing damage through the sun. This may double the life-span from the roofing and recoup the primary extra expense of installation. Further, green roofing supplies a thermal layer keeping the building cooler in summer and warmer in winter. Planners within local government have now realized the advantages of ecological roofing. Many district councils offer financial incentives to developers using green roofing on new buildings. This trend will continue as the requirement to reduce carbon emissions increases.
The rewards for your environment – Urban roofs constructed with traditional roofing materials absorb the suns rays and emit them as heat. It has led to the urban heat island effect. This effect is most noticeable at night with urban areas being warmer than surrounding areas. The environment temperature in the uk is approximately 6 degrees higher at nighttime because of the urban heat island effect. Green zjghhj will not absorb the temperature radiation therefore the effect is mitigated. Thus, the necessity for air cooling could be reduced in hotter climates.
Mass urbanisation leads to high water run off and flooding. Huge areas of concrete and tarmac stop the natural drainage of heavy rainfall. Green roofing absorbs between 50-75% of rainfall, gradually releasing it back into the environment. This evaporation process also cools your building reducing energy consumption and carbon emissions further.
Depending on the growing medium and the species present, green roofing can store as much as 239 grams of carbon per square metre. It possesses a valuable habitat for plants and insects as well as providing food for bee’s and seed eating birds. Ultimately ecological roofing replaces the green footprint removed from the building.
Modern roofing materials provide a lighter, much easier to maintain option for eco roofing. Lightweight mats and module trays allow localized maintenance without having to consider the Green Roof System. Thinking about the huge financial and environmental benefits associated with living roofs, the long run for green roofing looks rosy.