Thermal and Noise Reduction Performance of the Green Roof System on Metal Sheet Roofs ประสิทธิภาพในการลดอุณหภูมิและเสียงรบกวน

Main Article Content

Kantitut Tubsuwan Pasinee Sunakorn Chanikarn Yimprayoon


Metal roofing is commonly used in Thailand, especially in factory buildings, since it has corrosion
resistance, light in weight, and suitable for long spanning buildings, which promote more working
space. However, there are some major drawbacks to buildings for occupants such as the overheating
problem and the noise from the impact of rain. This research, therefore, examined the potential use
of the extensive green roof mat system (weight 25-60 kg/m2) to overcome overheating and rain noise
problems. The system was laid over the metal roof on an industrial building. The study observed
the thermal and acoustic performances before and after the system was installed. The results
showed that the outside surface temperature of the green roof was 30oC lower than the exposed
metal roof surface temperature. The indoor temperature was reduced by 2-3oC during the daytime
without air-conditioning when compared with the metal roof before green roof installation. For the
nighttime, the indoor temperature was decreased by 1-1.5oC in the same scenario. Finally, for the
acoustic performance during precipitation, the green roof can reduce the impact noise from rainwater
up to 14.5 decibels compared with the impact noise from rainwater directly falling on the metal
roof. In conclusion, a green roof can effectively be used to reduce the overheating and noise problems
in buildings installed with metal roofing.


Article Details



Allen, L. K. K., Elias, S. and Lim, C. H. The Thermal Performance of Evaluation of Roofing Systems and Materials in Malaysian Residential Development. In Proceedings of 9th SENVAR, ISESEE, Humanity and Technology, 387-395. Makaysia : Pusat Penerbitan University, 2008.

Andy, M. Virtual. “Acoustic Prototype Technique Applied to the Simulation of Noise from Rainfall on Skylights.” Paper presented at 19thInternational Congress on Acoustics, Madrid, September 2-7, 2007.

Ascione, F., Bianco, N., DE’Rossi, F., Turni, G. and Vanoli, G. P. “Green Roofs in European Climates: Are They Effective Solutions for the Energy Savings in Air-conditioning?” Applied Energy 104 (2013): 845-859.

Berardi, U. “The Outdoor Microclimate Benefits and Energy Saving Resulting from Green Roofs Retrofits. Energy and Buildings 121 (2016): 217-229.

Bluyssen, P. M. “Towards New Methods and Ways to Create Healthy and Comfortable Buildings.” Building and Environment 45 (2010): 808-818.

Carter, C., Villot, M. and Horlaville, C. “Study of Simulated Rainfall Noise on Roofs and Glazings. Prof Forum Acusticum.” Sevilla (January 2002).

Castleton, H., Stovin, V., Beck, S. and Davison, J. “Green Roofs; Building Energy Savings and the Potential for Retrofit.” Energy and Buildings 42 (2010): 1582-1591.

Gaffin, S., Rosenzweig, C., Parshall, L., Beattie, D., Berghage, R., O’keeffe, G. and Braman, D. Energy “Balance Modeling Applied to a Comparison of White and Green Roof Cooling Efficiency.” Paper presented to Proceedings of the 3rd Annual Greening Rooftops for Sustainable Cities Conference, Washington, D.C., May 4-6, 2005.

Galbrun, L. & Scerri, L. “Sound Insulation Of Lightweight Extensive Green Roofs.” Building And Environment 116 (2017): 130-139.

Idris, M. F. M., Musa, M. M. and Ayob, S. M. “Noise Generated by Raindrop on Metal Deck Roof Profiles: It’s Effect towards People Activities.” Procedia - Social And Behavioral Sciences 36 (2012): 485-492.

Jaffal, I., Ouldboukhitine, S. E. and Belarbi, R. “A Comprehensive Study of the Impact of Green Roofs on Building Energy Performance.” Renewable Energy 43 (2012): 157-164.

Kotsiris, G., Androutsopoulos, A., Polychroni, E. and Nektarios, P. A. “Dynamic U-Value Estimation And Energy Simulation For Green Roofs.” Energy And Buildings 45 (2012): 240-249.

Lazzarin, R. M., Gasparella, A. and D’ascanio, A. “Analysis of a Green Roof Application to An Industrial Building.” International Journal of Ambient Energy 24 (2003): 35-43.

Newton, J., Gedge, D., Early, P. and Wilson, S., Building Greener: Guidance on The Use of G r e e n R o o f s , G r e e n s W a l l s a n d Complementary Features on Buildings. London: Construction Industry Research & Information Association (Ciria), 2007.

Ouldboukhitine, S.-E., Belarbi, R., Jaffal, I. and Trabelsi, A. “Assessment of Green Roof Thermal Behavior: A Coupled Heat and Mass Transfer Model.” Building And Environment 46 (2011): 2624-2631.

Permpituck, S. and Namprakai, P. “The Energy Consumption Performance of Roof Lawn Gardens in Thailand.” Renewable Energy 40 (2012): 98-103.

Prado, R. T. A. and Ferreira, F. L. “Measurement of Albedo and Analysis of Its Influence the Surface Temperature of Building Roof Materials.” Energy And Buildings 37 (2005): 295-300.

Solcerova, A., Van De Ven, F., Wang, M., Rijsdijk, M. and Van De Giesen, N. “Do Green Roofs Cool The Air?” Building And Environment 111 (2017): 249-255.

Sonne, J. “Evaluating Green Roof Energy Performance.” Ashrae Journal 48 (2006): 59-61.

Sunakorn, P. “Thermal Performance of Green Roof Mat.” In 1st International Conference on Architecture and Civil Engineering Proceedings 2013, 546-550. Singapore: Global Science and Technology Forum, 2013.

Renterghem, T. Van. “Chapter 3.8 - Green Roofs for Acoustic Insulation and Noise Reduction.” In Nature based Strategies for Urban and Building Sustainability, Pérez, G. and Perini, K. (eds.). Oxford: Butterworth-Heinemann, 2018.

Renterghem, T. Van. and Botteldooren, D. “Influence of Rainfall on the Noise Shielding by a Green Roof.” Building And Environment 82 (2014): 1-8.

Wong, N. H. and Yu, C. “Study of Green Areas and Urban Heat Island in a Tropical City.” Habitat International 29 (2005): 547-558.

Yang, H. S., Kang, J. and Choi, M. S. “Acoustic Effects of Green Roof Systems on a Low-Profiled Structure at Street Level.” Building And Environment 50 (2012): 44-55.