Traditional roofing is designed to shed water as fast 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 consider building a green roof?
Precisely what is ecological roofing? An eco friendly roof (GR) offers a base on top of a structure in which various plant life may grow. Recent GR progress has become developed in Germany. About 10% from the buildings in Germany are now green. The covering is made up in layers, each layer fulfilling another function. The base layer sits on the top of the substrate and provides a waterproof seal to the building. This might come as metal tray roofing or even a synthetic membrane. A drainage layer is put into allow water to evacuate the roof, followed by a filter and root protection layer. The basis protection membrane prevents plant growth from puncturing the waterproof membrane and causing leaks. The last layer is the growing medium where the plant growth is bedded. Green or “living roofs” may be divided into three main categories. Extensive, Intensive and Bio diverse.
Extensive green roofs – Extensive GR, (also known as Eco roofing) is utilized to promote the expansion of mosses, herbs and grasses. The growing medium is fairly shallow using a depth which is between 60-200mm. The load in the plant medium is 60-150kg per square metre. Eco roofing can be used where there is little or no human foot traffic and low maintenance roofing is required. This type of roofing is definitely the cheapest to put in.
Intensive green roofing – Roof gardens and park gardens are constructed using Intensive green roofing. This group of roofing offers the widest variety of planting opportunities. Shrubs, flowers and also trees could be utilised. The depth from the growing medium is between 150-400mm. This pushes the body weight per square metre up to 180-500kg and needs a significant structure to back up 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 create an array of different habitats for various species. Local plants are grown and wind swept seeds are permitted to take root. Bio diverse roofing is usually targeted at providing a certain habitat for a threatened species.
The benefits for the building – Green roofing can turn an unattractive urban roof into an attractive feature. Along with the aesthetic value added, living roofs provide numerous financial benefits. The waterproof membrane on roofs is subjected constantly to Ultra-violet light. These Ultra violet rays break down the top of the roofing causing leaks and the requirement for early replacement. The growing medium of just living roofs supplies a protective layer preventing damage from your sun. This could twice the lifespan from the roofing and recoup the first extra cost of installation. Further, green roofing supplies a thermal layer keeping your building cooler in summer and warmer during 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 continue as the need to reduce carbon emissions increases.
The rewards for your environment – Urban roofs designed with traditional roofing materials absorb the suns rays and emit them as heat. This has resulted in the urban heat island effect. This effect is most noticeable at night with urban areas being warmer than surrounding areas. The air temperature in London is all about 6 degrees higher during the night due to the urban heat island effect. Green zjghhj will not absorb the temperature radiation and so the effect is mitigated. Thus, the need for air cooling might be reduced in hotter climates.
Mass urbanisation contributes to high water run off and flooding. Huge areas of concrete and tarmac prevent 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 the property reducing energy consumption and carbon emissions further.
Depending on the growing medium and also 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 by 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 go ahead and take Green Roof System. Considering the huge financial and environmental benefits associated with living roofs, the future for green roofing looks rosy.