• International Journal of Technology (IJTech)
  • Vol 10, No 1 (2019)

Review of Significant Maintenance Criteria for Tropical Green Roofs in Malaysia

Review of Significant Maintenance Criteria for Tropical Green Roofs in Malaysia

Title: Review of Significant Maintenance Criteria for Tropical Green Roofs in Malaysia
Shafikah Shaharuddin, Natasha Khalil, Alia Abdullah Saleh

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Shaharuddin, S., Khalil, N., Abdullah Saleh, A., 2019. Review of Significant Maintenance Criteria for Tropical Green Roofs in Malaysia . International Journal of Technology. Volume 10(1), pp. 69-80

Shafikah Shaharuddin Department of Quantity Surveying, Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, Perak Branch, 32610 Seri Iskandar, Perak, Malaysia
Natasha Khalil Department of Quantity Surveying, Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, Perak Branch, 32610 Seri Iskandar, Perak, Malaysia
Alia Abdullah Saleh Department of Building Surveying, Faculty of Architecture, Planning and Surveying, Universiti Teknologi MARA, Perak Branch, 32610 Seri Iskandar, Perak, Malaysia
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Review of Significant Maintenance Criteria for Tropical Green Roofs in Malaysia

The implementation of green roofs on the top of buildings is becoming a trend in urban cities as they provide numerous benefits for green development growth. In Malaysia, numerous approaches towards sustainable development have been adopted in order to overcome crucial environmental issues such as urban heat islands, air pollution and lack of green spaces. One of the sustainable approaches that helps to minimize such problems is the use of vegetation or plant material on rooftops, also known as green roofs. Among the benefits of implementing green roofs or buildings are reducing heat flux, optimizing energy efficiency, and improving storm water management. Despite the benefits of green roof installation, the maintenance consideration is still largely unexplored and is a significant factor in the viability of green roof installation. Therefore, this paper aims to identify the significant criteria for green roof maintenance practice in Malaysia, as an added value to the existing practice that has previously been more concerned with design and benefit considerations. The literature findings reveal that there are generally 20 criteria related to such maintenance. Out of these, six are identified as the most significant factors in the best practice of green roof maintenance, being appropriate and important for the Malaysian tropical climate. The findings can serve as added value to existing practice, which has previously been more concerned with design and benefit. Therefore, they will also help to improve current green roof maintenance undertaken by building operators and maintenance managers.

Green roof; Green roof maintenance; Maintenance; Maintenance criteria; Tropical


Malaysia is a tropical country located on the South China Sea, lying at latitude 3.12 °N and longitude 101.55 °E (Mirrahimi et al., 2016). The tropical region is an uncomfortable climate zone that experiences a large amount of solar radiation, high temperatures, high levels of relative humidity, and long periods of sunny days all year round (Al-obaidi et al., 2014). This is also supported by Khalil & Husin (2009), who describe the location of Malaysia as a tropical climate region, which is naturally hot and humid. Moreover, due to the rapid growth of the urban population, this region has experienced a rise in urbanization, especially in developed countries such as Singapore, Malaysia and Indonesia (Al-obaidi et al., 2014). The boom in the urban population has led to mass development and has reduced the number of green areas.

In 2012, a study by Yusof and Johari (cited in Chow & Abu Bakar, 2016) stated that the green areas of Kuala Lumpur had been reduced from their original 24,222 hectares in the city area to 14,386 hectares (59.4% of the total). This rapid development has also boosted the intensity of urban heat islands (UHIs) (Wong & Yuen, 2011). All of these risks are emerging as sustainability challenges that must be addressed by urban governments, so climate mitigation and adaptation efforts are intrinsic aspects of long-term city planning (Hidayatno et al., 2015). Nevertheless, the construction industry in Malaysia has been developing concurrently with sustainable development and is working to end the problems which have occurred in recent decades. One of the sustainable approaches to help minimize environmental problems is the use of of vegetation or plant material on rooftops, also known as green roofs.

Many buildings in developed countries such as Germany, Canada, Japan, America and Singapore have used green roofs as a solution to reduce environmental problems and provide benefits. As stated by Herman (2003), about 14% of all flat roofs in Germany have adapted the green approach and the supportive government policies have made it typical to have green roofs in cities. At the same time, over the past few decades, green roofs have become well accepted and more popular across Europe (Kamarulzaman et al., 2014). Furthermore, Getter & Rowe (2006) also mention that the roof area in most urban regions would usually constitute around 21%-26% of the total area. Therefore, such roofing would provide the possibility to add to the urban green area. The technology is also becoming common in the USA, for instance in Chicago, Portland, Atlanta and other cities (Ismail et al., 2016). Meanwhile in Canada, the Canadian government began incorporating green roofs in a series of sustainable initiatives, making them eligible for partial reimbursement and funding (Snodgrass & McIntyre, 2010). Moreover, the Ministry of Federal Territories and Urban Wellbeing Malaysia through “The Greening of Greater KL” program, have targeted a total area of conventional roofing of 150,000 m2 to be converted into green roofs by 2020 (Getter & Rowe, 2006). That was a very great initiative by the Government to help promote the implementation of green roofs in the country, even though the program is still at the preliminary stage.

Although the application of green roofs in the country is still low, there have been some successful green roofs applications applied to a few buildings in Malaysia, and it is slowly becoming a trend in the building industry. Regardless of the green roof implementation on certain buildings that has taken place, challenges in terms of maintenance should also be taken into account and given attention. There have been cases where the main problems in green roofs have been technical issues, such as damage to water proofing; leakage onto the floor structure at green roof level; and blockage in the drainage system, increasing the occurrence of water ponding, as well as mosquito breeding (Ismail et al., 2010). Thus, the lack of maintenance is seen to be observable fact that can result in roof gardens not functioning as intended (Ismail et al., 2010). The establishment of plant material on rooftops provides numerous benefits to people and nature. When considering the viability of the installation of green roofs, the maintenance process is a highly important factor, and is believed to be one of the major obstacles to their installation.

Therefore, the aim of this paper is to identify the significant criteria for green roof maintenance practice in Malaysia. The objective of the research is to establish current practices and the vital criteria needed for green roof maintenance. Hence, the findings of the paper are presented to achieve the research objective. Moreover, the findings can serve as added value to existing practice, which has previously been more concerned with design and benefit consideration. In order to achieve this aim, previous studies on types of green roof, and their relation to the significance of maintenance and maintenance criteria, have been explored in both local and international contexts.


The green movement has become a global trend in the construction industry, as numerous studies on the concept of green roofs have exemplified. However, in Malaysia concern for green roof maintenance has not been prioritized in terms of the viability of its application. The maintenance of the green roof system itself is often neglected, but maintenance plays an important role in sustaining the green roofs for their intended function. The outcome of this study has focused on the green roof concept in assessing the appropriate maintenance criteria to be applied in Malaysia. These are considered to be appropriate and significant in the context of green roof maintenance in Malaysia. Inevitably, the maintenance criteria should be well acknowledged by the building owner and operators before the green roof is implemented. A future study path will outline the strategic ways and best practices as an improvementt for the current maintenance practice of green roof.


The authors wish to acknowledge the support of grant in performing this study under the Special Grant Incentive for Supervision in Perak (GKIPP) Phase 1/2018 funded by the Offfice of Research, Industrial Linkage, Community and Alumni (PJIMA), Universiti Teknologi MARA, Perak Branch, Malaysia.


Supplementary Material
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Abdul Rahman, S.R., Ahmad, H., Mohammad, S., Rosley, M.S.F., 2015. Perception of Green Roof as a Tool for Urban Regeneration in a Commercial Environment: The Secret Garden, Malaysia. Procedia - Social and Behavioral Sciences, Volume 170, pp. 128–136

Abdul Rahman, S.R., Ahmad, H., Rosley, M.S.F., 2013. Green Roof: Its Awareness Among Professionals and Potential in Malaysian Market. Procedia Social and Behavioral Sciences, Volume 85, pp. 443–453

Akasah, Z.A., Shamsuddin, S.H., Abd Rahman, I., Alias, M., 2009. School Building Maintenance Strategy: A New Management Approach. In: Malaysian Technical Universities Conference and Exhibition on Engineering and Technology (MUCEET), Pahang, 20-22 June, Malaysia, pp. 1–5

Al-Obaidi, K.M., Ismail, M., Rahman, A.M.A., 2014. Passive Cooling Techniques through Reflective and Radiative Roofs in Tropical Houses in Southeast Asia: A Literature Review. Frontiers of Architectural Research, Volume 3(3), pp. 283–297

ASTM International E2400, 2006. Standard Guide for Selection, Installation, and Maintenance of Plants for Green Roof Systems. Available Online at https://www.astm.org/DATABASE.CART/HISTORICAL/E2400-06.htm

Bass, B., Maclvor, S., McGlade, T., 2013. City of Toronto: Guidelines for Biodiverse Green Roofs. Available Online at https://web.toronto.ca/wp-content/uploads/2017/08/8d24-City-of-Toronto-Guidelines-for-Biodiverse-Green-Roofs.pdf

Chow, M.F., Abu Bakar, M.F., 2016. A Review on the Development and Challenges of Green Roof Systems in Malaysia. International Journal of Civil, Environmental, Structural, Construction and Architectural Engineering, Volume 10(1), pp. 16–20

Fauzi, M.A., Malek, N.A., Othman, J., 2013. Evaluation of Green Roof System for Green Building Projects in Malaysia. International Journal of Environmental, Chemical, Ecological, Geological and Geophysical Engineering, Volume 7(2), pp. 75–81

Fioretti, R., Palla, A., Lanza, L.G., Principi, P., 2010. Green Roof Energy and Water Related Performance in the Mediterranean Climate. Building and Environment, Volume 45(8), pp. 1890–1904

Gedge, D., Grant, G., Kadas, G., Dinham, C., 2013. Creating Green Roofs for Invertebrates: A Best Practice Guide. Buglife, Peterborough, England

Getter, K.L., Rowe, D.B., 2006. The Role of Extensive Green Roofs in Sustainable Development. HortScience, Volume 41(5), pp. 1276–1285

Hamzah, Z., Salleh, E., Jaafar, M.F.Z., Yusoff, W., Nor, M.F.I.M., 2016. Transforming Terrace Housing Rooftop to Green Roof in Kuala Lumpur – A Study on Its Constructs and Variables. Journal of Design + Built, Volume 9, pp. 62–75

Harris, M., 2014. The GRO Green Roof Code: Final Report of Green Roof Code of Best Practice for the UK 2014

Herman, R., 2003. Green Roofs in Germany: Yesterday, Today and Tomorrow. In: Proceedings of the 1st North American Green Roof Conference: Greening Rooftops for Sustainable Communities, Chicago, Volume 32(22), pp. 41–45

Hidayatno, A., Rahman, I., Muliadi, R., 2015. Policy Analysis of the Jakarta Carbon Mitigation Plan using System Dynamics to Support Decision Making in Urban Development – Options for Policymakers. International Journal of Technology, Volume 1(5), pp. 886–893

Hui, S.C.M., 2006. Benefits and Potential Applications of Green Roof Systems in Hong Kong. In: Proceedings of the 2nd Megacities International Conference 2006, Guangzhou, 12 December, China, pp. 1–8

Hui, S.C.M., 2010. Development of Technical Guidelines for Green Roof Systems in Hong Kong. In: Proceedings of Joint Symposium 2010 on Low Carbon High Performance Buildings, Hong Kong, 23 November, China, pp. 18

Idrus, A., Khamidi, F., Sodangi, M., 2010. Maintenance Management Framework for Conservation of Heritage Buildings in Malaysia. Modern Applied Science, Volume 4(11), pp. 66–77

Isa, N.M., Kamaruzzaman, S.N., Mohamed, O., Berawi, M.A., 2017. Review of Facilities Management Functions in Value Management Practices. International Journal of Technology, Volume 8(5), pp. 830–840

Ismail, W.Z.W., Ahmad, S.S., Hashim, A.E., Isnin, Z., Ali, I.M., 2010. Perception towards Green Roof in Malaysia. In: Proceedings of Management in Construction Researchers Association 9th Annual Conference and Meeting (MiCRA 2010), Malaysia

Ismail, W.Z.W., Ariff, N.R.M., Ahmad, S.S., Kamarudin, H., 2016. Green Roof Maintenance towards Sustaining Neighborhood Spaces of High-rise Residential Developments in Malaysia. Advanced Science Letters, Volume 22(5-6), pp. 1502–1508

Jim, C.Y., 2017. Green Roof Evolution through Exemplars: Germinal Prototypes to Modern Variants. Sustainable Cities and Society, Volume 35, pp. 69–82

Kamarulzaman, N., Hashim, S.Z., Hashim, H., Saleh, A.A., 2014. Green Roof Concepts as a Passive Cooling Approach in Tropical Climate – An Overview. E3S Web of Conferences, Volume 3, pp. 01028-p.1–01028-p.7

Khalil, N., Husin, H.N., 2009. Post Occupancy Evaluation towards Indoor Environment Improvement in Malaysia’s Office Buildings. Journal of Sustainable Development, Volume 2(1), pp. 186–191

Khalil, N., Kamaruzzaman, S.N., Baharum, M.R., 2015. A Survey on the Performance-risk Rating Index for Building Performance Assessment in Higher Education Buildings. Jurnal Teknologi, Volume 75(9), pp. 57–63

Khor, J.A., 2010. The Effect of Green Roof Technology and Conventional Zinc Roof to Different Building Materials in Tropical Climate. Universiti Malaysia Sarawak, [Project Report] (Unpublished). Available Online at https://ir.unimas.my/4597/

Luckett, K., 2009. Green Roof Construction and Maintenance. The McGraw-Hill Companies, Inc., New York, USA

Mirrahimi, S., Mohamed, M.F., Haw, L.C., Ibrahim, N.L.N., Yusoff, W.F.M., Aflaki, A., 2016. The Effect of Building Envelope on the Thermal Comfort and Energy Saving for High-rise Buildings in Hot–humid Climate. Renewable and Sustainable Energy Reviews. Volume 53, pp. 1508–1519

Mohd-Noor, N., Hamid, M.Y., Abdul-Ghani, A.A., Haron, S.N., 2011. Building Maintenance Budget Determination: An Exploration Study in the Malaysia Government Practice. Procedia Engineering, Volume 20, pp. 435–444

Olanrewaju, A.A., 2010. Quantitative Analysis of Criteria in University Building Maintenance in Malaysia. Australasian Journal of Construction Economics and Building, Volume 10(3), pp. 51–61

Saiz, S., Kennedy, C., Bass, B., Pressnail, K., 2006. Comparative Life Cycle Assessment of Standard and Green Roofs. Environmental Science & Technology, Volume 40(13), pp. 4312–4316

Silva, C.M., Flores-Colen, I., Coelho, A., 2015. Green Roofs in Mediterranean Areas Survey and Maintenance Planning. Building and Environment, Volume 94, pp. 131–143

Snodgrass, E.C., McIntyre, L., 2010. The Green Roof Manual: A Professional Guide to Design, Installation, and Maintenance. Timber Press, Inc., Portland, Oregon, USA

Tolderlund, L., 2010. Design Guidelines and Maintenance Manual for Green Roofs in the Semi-Arid and Arid West

Townshend, D., 2006. Study on Green Roof: Application in Hong Kong. Final Report for Urbis Limited, 16 February 2007

Wong, T.C., Yuen, B., 2011. Eco-city Planning: Policies, Practice and Design. Springer, Singapore

Zahir, M.H.M., Raman, S.N., Mohamed, M.F., Jamiland, M., Nopiah, Z.M., 2014. The Perception of Malaysian Architects towards the Implementation of Green Roofs: A Review of Practices, Methodologies and Future Research. E3S Web of Conferences. Volume 3, pp. 01022-p.2–01022-p.8