Standard roofing is designed to shed water as quickly as possible. Conversely, green roofing It can cost up to 50% more to install and may also make maintenance more difficult. So would you think about building a roof?
What is roofing?
A green roof (GR) provides a base on top of a structure in which various plant life may grow. Recent GR progress was invented in Germany. About 10 percent of those buildings in Germany are green. The covering is built up in layers, each layer fulfilling a function. The base layer sits on top of the substrate and provides a waterproof seal to the building. This may come in the form of metal tray roof or a membrane. There is A layer added to allow water to evacuate the roof, followed by origin protection layer and a filter. The main protection membrane prevents plant growth from puncturing the watertight membrane and causing leaks. The last layer is the growing medium in which the plant growth is bedded. Extensive, Intensive and Bio diverse.
Extensive green roofs
Extensive GR, (also called Eco roof) is used to promote the growth of mosses, herbs, and grasses. The growing medium is relatively shallow with a thickness of between 60-200mm. Eco roofing is used where it is little, or no human foot traffic and low maintenance roofing is necessary. This sort of roofing is the cheapest to install.
Intensive green roofing
Roof gardens and park gardens are built using the Intensive green roof. This category of roofing offers the widest range of planting opportunities. Even trees, flowers and shrubs can be utilized. The thickness of the medium that is growing is between 150-400mm. This needs a structure and pushes against the weight per square meter up to 180-500kg.
Bio green roofing
Bio diverse roofing was made to be left alone to reproduce a natural ecosystem. Soil levels on the surface are varied to make a range of different habitats. Plants are grown, and wind swept seeds are permitted to take root. Bio diverse roofing is often aimed at providing a habitat for a threatened species.
The benefits for the building
Green roofing can turn an unattractive urban roof into an aesthetically pleasing characteristic. As well as the aesthetic value added, numerous financial benefits are provided by living roofs. The membrane on roofs is exposed continuously to Ultra Violet light. These UV rays break down the surface of the roofing causing leaks and the need for replacement. A protective coating preventing damage is provided by the medium of dwelling roofs. This recovers the initial extra cost of installation and can double the life span of the roof. Further roofing provides a thermal layer keeping the building cooler in summer and warmer in winter. Planners within government have realized the advantages of green roofing. Many district councils offer financial incentives to developers using green roofing on new buildings. This trend will continue as the need to decrease carbon emissions increases.
The advantages for the environment
Urban roofs constructed with conventional roofing materials absorb the suns rays and emit them as heat. This has led to the urban heat island effect. This effect is most noticeable at night with urban areas being warmer than surrounding regions. The air temperature in London is due to the urban heat island effect. The demand for air conditioning might be decreased in hotter climates.
Mass Urbanisation leads to high water run off and flooding. Huge regions of tarmac and concrete prevent the natural drainage of heavy rainfall. The green roof absorbs between 50-75% of rainfall, slowly releasing it back into the environment. This evaporation process cools the building reducing energy consumption and carbon emissions.
Depending On the species present and the growing medium, green roofing can store up to 239 grams of carbon per square meter. Habitat for insects and plants in addition to providing food for bees and Seed. In effect roofing that is ecological replaces the green The construction was removed by footprint.