Traditional roofing is made to shed water as quickly as possible from the Green Roof System. 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 exactly is ecological roofing
An environmentally friendly roof (GR) offers a base on the top of a structure in which various plant life may grow. Recent GR progress continues to be created in Germany. About 10% in the buildings in Germany are now green. The covering is built up in layers, each layer fulfilling another function. The base layer sits on top of the substrate and supplies a waterproof seal for the building. This may come as metal tray roofing or even a synthetic membrane. A drainage layer is put into allow water to evacuate the rooftop, then a filter and root protection layer. The root protection membrane prevents plant growth from puncturing the waterproof membrane and causing leaks. The ultimate layer is definitely the growing medium where the plant growth is bedded. Green or “living roofs” can be separated into three main categories. Extensive, Intensive and Bio diverse.
Extensive green roofs
Extensive GR, (also called Eco roofing) is utilized to advertise the growth of mosses, herbs and grasses. The growing medium is relatively shallow with a depth which is between 60-200mm. The load from 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 necessary. This sort of roofing is the cheapest to set up.
Intensive green roofing – Roof gardens and park gardens are constructed using Intensive green roofing. This category of roofing offers the widest selection of planting opportunities. Shrubs, flowers and even trees can be utilised. The depth of the growing medium is between 150-400mm. This pushes the body weight per square metre approximately 180-500kg and needs a substantial structure to aid it.
Bio diverse green roofing – Bio diverse roofing is made to be left alone to reproduce an all natural ecosystem. Soil levels on the surface are varied to generate a variety of different habitats for various species. Local plants are grown and wind swept seeds are allowed to take root. Bio diverse roofing is usually targeted at providing a particular habitat to get a threatened species.
The benefits for that building – Green roofing can change an unattractive urban roof into an aesthetically pleasing feature. And also the aesthetic useful, living roofs provide numerous financial benefits. The waterproof membrane on roofs is subjected constantly to Ultra-violet light. These Ultra violet 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 from your sun. This can double the life span in the roofing and recoup the primary extra cost of installation. Further, green roofing provides a thermal layer keeping your building cooler in summer and warmer during winter. Planners within local government have now realized some great benefits 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 advantages for your environment – Urban roofs constructed with traditional roofing materials absorb the suns rays and emit them as heat. This has triggered the urban heat island effect. This effect is most noticeable at night with urban areas being warmer than surrounding areas. The environment temperature in London is about 6 degrees higher at night due to the urban heat island effect. Green zjghhj fails to absorb the temperature radiation 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 regions 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 the building reducing energy consumption and carbon emissions even more.
Depending on the growing medium as well as the species present, green roofing can store as much as 239 grams of carbon per square metre. It provides a valuable habitat for plants and insects along with providing food for bee’s and seed eating birds. Essentially ecological roofing replaces the green footprint removed through the building.
Modern roofing materials offer a lighter, much easier to maintain option for eco roofing. Lightweight mats and module trays allow localized maintenance without having to take the Green Roof Modules. Considering the huge financial and environmental benefits of living roofs, the long run for green roofing looks rosy.