Abstract
Urbanisation inevitably shows a positive sign in increasing the economic reputation of a country. Nevertheless, it has led to several problems including the deficit in green spaces and destruction of the natural environment, therefore green building is introduced as an alternative to overcome crucial environmental issues. Numerous approaches were also adopted to reduce other environmental issues such as urban heat island, air pollution and lack of green spaces. One of the sustainable approaches that help to minimise the environmental problems is by using the means of vegetation or plant material on rooftops or also known as the green roof. The implementation of the green roof on top of buildings is becoming a trend in the urban cities as it provides numerous benefits to the green development. The green roof is also part of criteria in green building and among the benefits, implementing green roofs will reduce heat flux, optimise energy efficiency and improve stormwater management. However, despite the benefits, enhancement on the green roof installation and maintenance consideration are two factors which are still largely unexplored as the main significant factor in the viability of the green roof installation. Hence, this paper is aimed to determine the vital criteria of maintenance and its ranking towards the establishment of best practice maintenance for the green roof, by focusing on high-rise residential. Questionnaires were distributed by email and through an online survey to 30 maintenance managers of green roof of high-rise residential in Kuala Lumpur and the samples are drawn by using purposive sampling technique. The results showed that the most significant maintenance criteria of the green roof are drainage, followed by waterproofing, irrigation, water retention, and roof slab. The outcome of this study has provided a significant contribution to the current maintenance practice of green roof by prioritising the criteria of maintenance and key address of green roof, where it may help to standardise the maintenance practice of the green roof in the tropical climate of Malaysia.
Highlights
Urbanisation raises the economic development and growing population of a country
According to a study by [3], the green areas in Kuala Lumpur have decreased from the original city area of 24,222 hectare to 59.4% or 14,386 hectares, which consist of trees, shrubs, grassland and water bodies
This paper concludes that according to the current practice, the maintenance strategy that is mostly being adopted by the facility manager or maintenance manager for the green roof maintenance in high-rise residential buildings in Malaysia is preventive maintenance strategy
Summary
Urbanisation raises the economic development and growing population of a country. According to a study by [3], the green areas in Kuala Lumpur have decreased from the original city area of 24,222 hectare to 59.4% or 14,386 hectares, which consist of trees, shrubs, grassland and water bodies. This shows that urbanisation affects the green areas, whilst creating many environmental problems. It has led to a high demand for urban green spaces as well as high-rise buildings, due to the rapid growth in population and the increased urbanisation rate in the country.
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