4. Data analysis and findings
4.1. Differences in outdoor and inside temperature of building without the vertical greening
Based on the graph Fig. 6a, the minimum temperature recorded in both indoor and outdoor of the CIMB building
is at 9.00 am with the temperature of 28.5°C indoor and 28.7°C outside. Subsequently, the maximum temperature
recorded was at 10.00 am The maximum temperature inside the building was 33.45°C whereas the maximum
outside temperature outside the building was 35.3°C. It can be concluded that the difference between the
temperature inside and outside of the building was comparatively low. This was probably due to the low efficiency
of the facade used and could not regulate the heat that enters into the building. There were also other factors that
may affect the temperature result.
(a) (b)
Fig. 6. Differences in outdoor and inside temperature of building
4.2. Differences in outdoor and inside temperature of building with vertical greening
Fig. 6b shows that the office building with the presence of vertical greening façade reached its peak temperature
of both inside and outside at 3.00 pm. The maximum temperature recorded inside the building is 31.1°C while the
maximum temperature recorded outside the building is 32.75°C.
The minimum temperature recorded is at 9.00 am with the temperature inside the office building is 28.2°C and
28.3°C for the temperature outside. Due to the rain that occurred at 9.00 am the temperature in both office buildings
appeared to have the same minimum temperature.
4.3. Comparison of temperature reduction percentage in both buildings
Fig. 7. indicates that the office building with the vertical greening facade clearly have higher amount of
temperature reduction compared to the office building without vertical greening facade. The maximum percentage
of temperature recorded at 10.00 am is 0.29% higher than the temperature in the building without vertical greening
facade. The graph indicates that the highest percentage of temperature reduction in building with vertical garden
facade can achieve up to 10% while the minimum percentage of temperature reduction it can achieve is 0.99%. As
for the building without vertical garden, the maximum percentage of temperature reduction is 6.21%, and the
minimum percentage of temperature reduction is 0.97%. Both building facades can reduce the indoor temperature,
but the facade with the vertical greening is more effective as it can reduce the indoor temperature by 3.79%.