Biological and organic systems - Green roofing systems

However, the green roof is not a new technology. They are only modified and further developed, but can be traced back thousands of years. Since the house is made of mud bricks and the vegetation after the rain has just left the roof, in the ancient times the first green roof was unconsciously used (Appendix A, Fig. 1). These early shelters provide protection from elements, good winter insulation and a cool summer. After establishing the benefits of the green roof, this technology gets more and more popular, and the Babylon Sky Garden, one of the seven wonders of the ancient world, was born (Appendix A, Figure 2).

Ed Snodgrass, owner of Maryland's Emory Knoll Farm and Green Roof Plant, says: "I have told developers that green roofs are useful for buildings and that they can do at the lowest cost." One example is at the Morgan Distribution Center in Manhattan Center, Postal Service of the United States of America. In 2009, this facility replaced the roof tar and the roof roof with a 5 acre park for 3,000 employees working there. The green roof was built in 1933 and is now a designated historic building and provides a place where employees relax and bring great benefits to the owner. Project costs total $ 4.4 million, which is twice the cost of conventional roofs, but it is expected to last at least twice, and even before the benefits and savings associated therewith, the life cycle costs are about the same I will.

This research is expected to determine the performance benefits of the green roof system in order to use the green roof in a Malaysian building. In addition, this research identifies barriers to green roofing and develops recommendations to overcome this barrier. In addition, this research improves the knowledge system, the green roof system improves the urban environment, reduces the energy usage of the building, in particular, helps to reduce the impact of global warming in urban areas of Malaysia. Most importantly, this research hopes to better understand and adopt the green roof system in Malaysian architecture. At the end of the research, it will develop a new design guide for Malaysia's sustainable green roof system.

The green roof is a system that utilizes growth medium and vegetation on the roof of the building (Cresswell, 2007). Vegetation is planted in the layer of soil or growth medium as the top layer of the roof. The water membrane system is located between the growth medium and the roof deck to capture water and has a filtration system to ensure adequate water supply during the dry day of the plant (Long et al ., 2006, Piper, 2003). Green roofs are gaining in popularity in Germany, America, Europe (Koonce, 2010). Not only because of its aesthetic value but also because the environment has been improved (Li et al., 2010). As discussed (Castleton et al., 2010), the roof of the building may be partially or completely covered with a layer of vegetation. Many experts have confirmed that the green roof can be divided into two intensive and comprehensive systems (Long et al., 2006, Molineux et al., 2009, Cresswell, 2007, Castleton et al. 2010).