Abstract
Green roof system is widely implemented because of its environmental and economic benefits and aesthetic value to a building. There are numerous successful green roof projects, both extensive and intensive in Malaysia. However, there is no specific technical guideline for the planning, design and construction of green roof system catered to the climate and background of Malaysia. The aim of the research is to propose and develop a technical guideline of extensive green roof system in Malaysia on the planning, design and construction aspects of vegetation, substrate, filter, drainage and root penetration barrier. Comparative literature review of guidelines from Hong Kong, Singapore and Sydney were leveraged upon to propose an appropriate guideline for Malaysia’s market. In-depth interviews were carried out with green roof experts to collect feedbacks on the proposed guideline in the validation stage. The output from this research will conceptualise a framework for a technical guideline for future implementation of green roof systems in Malaysia.
Highlights
The urgency of global warming has prompted a global movement to adopt sustainability as a focus in urban development
This research focus on extensive systems as they would be a good start for Malaysia to adopt green roof systems due to the low overall cost and easy implementation compared to intensive systems [2]
A range of literature that were written on green roof systems were selected and reviewed especially those produced from Malaysia
Summary
The urgency of global warming has prompted a global movement to adopt sustainability as a focus in urban development. Due to the increase in population and economic activities, greenery in the cities were rapidly replaced by the mushrooming of high rise building in Malaysia. Green roof systems are classified as two types, extensive and intensive. Intensive green roofs are harder to maintain and cost more as it requires higher structural loading support and the high substrate depth allow more varieties of plant selection like trees, shrubs and grass. Extensive roofs are easier to maintain and requires less maintenance as the plants selected usually has higher survivability and requires less attention to maintain. This research focus on extensive systems as they would be a good start for Malaysia to adopt green roof systems due to the low overall cost and easy implementation compared to intensive systems [2].
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